Answer:
P ∈ {3, 5, 6, 8}
Step-by-step explanation:
You want the possible perimeter values such that there can only be one triangle with that perimeter and integer side lengths.
ConditionsThe requirement that the triangle satisfies the triangle inequality means the longest side must be shorter than P/2.
TrialsThe smallest triangle with integer side lengths is the {1, 1, 1} equilateral triangle.
P=3, {1, 1, 1}
For P=4, the longest side can be neither 1 nor 2, so P=4 is not an option.
For P=5, the longest side can be 2, requiring the other sides to be 2 and 1:
P = 5, {2, 2, 1}
For P=6, the longest side must be less than 3, so all sides must be 2.
P = 6, {2, 2, 2}
For P=7, two triangles are possible: {3, 3, 1} and {3, 2, 2}.
For P = 8, the longest side must be less than 4, so will be 3. The other two sides must be 3 and 2.
P = 8, {3, 3, 2}
For all values of P above 8, there are at least two possible triangles.
Possible values of P are 3, 5, 6, 8.
Determine the nature of the roots of ax² + bx + c = 0 if a > 0, b < 0 and c < 0
Answer: Roots are real and distinct
Step-by-step explanation:
a = +ve b = -ve c = -ve
determinant = +ve
if determinant is positive then roots are real and distinct
(a)[2 pts] what is the notation of the sample mean? find the sample mean. (b)[3 pts] find the five-number summary of the sample.
a) Sample mean is arithmetic average of data values. The sample mean of provide data values is 10.
b) The five-number summary of the sample is minimum = 4, Q1 = 4.5, median = 9 , Q3 = 15.5 and maximum= 16.
The population mean is denoted by greek letter, μ and sample mean is a random variable; which is written as x-bar and x-bar stands for individual values it takes. The sample mean is a statistic measure obtained by calculating the arithmetic mean of sample values ( values of variable in sample). The sample mean formula is: x-bar = ( Σxᵢ) / n
x-bar represents the “sample mean”Summation notation, Σ, which means “sum up”xᵢ, all of the x-values or data values n means the number of values in the sampleNow, we have to calculate sample mean of following data values, 12,8,15,16,5,4.
Sum of values, Σ xi = 12 + 8 + 15 + 5 + 4 + 16 = 60
Number of values = 6
So, Sample mean, = ( Σ xi ) / n = 60/6 = 10
The five-number summary includes following :
Minimum data value.Q₁ (the first quartile ).Median.Q₃ (the third quartile).maximum data value.So, Steps to determine the five-number summary:
Put your numbers in ascending order.Determine minimum( smallest number) and maximum (largest number) value.Determine the median. The median is the middle number, in case of odd number of data values and in case even set of data the meadian is equals to average of the (n/2)ᵗʰ and the (n/2 + 1)ᵗʰ terms.Place parentheses around the numbers above and below the median.Determine Q₁ and Q₃. Q₁ is median in the lower half of the data, and Q₃ is median for the upper half of data.Now, the sample set is 12,8,15,16,5,4. Arrange the data values in ascending order, 4,5,6,12,15,16. So, Minimum value
= 4 , Maximum value = 16 ,Median = mean of 6 and 12 = (6 + 12)/2 = 9. The vales written as(4, 5, ) 6, 12, (15, 16 ). The value of first quartile, Q₁ = median of lower ( 4,5) = (4+5)/2
= 9/2 = 4.5. Similarly, Third quartile, Q₃
= (15+16)/2= 31/2 = 15.5. Thus, the five-numer summary is minimum = 4, Q₁
= 4.5, median = 9 , Q₃ = 15.5 and
maximum = 16.
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Complete question:
Consider the sample set 12,8,15,16,5,4 and answer the below questions:
(a)[2 pts] what is the notation of the sample mean? find the sample mean.
(b)[3 pts] find the five-number summary of the sample.
Iara makes salad dressing by mixing 8 88 spoonfuls of oil and some vinegar. The tape diagram shows the ratio of oil to vinegar. A tape diagram with 2 tapes of unequal lengths. The first tape has 2 equal parts. A curved bracket above the first tape is labeled Oil. The second tape has 1 part of the same size as in the first tape. A curved bracket below the second tape is labeled Vinegar. A tape diagram with 2 tapes of unequal lengths. The first tape has 2 equal parts. A curved bracket above the first tape is labeled Oil. The second tape has 1 part of the same size as in the first tape. A curved bracket below the second tape is labeled Vinegar. Complete the table. Original ratio Amount (spoonfuls) Oil 8 88 Vinegar 1 11 Total dressing 3 33
Answer:
Step-by-step explanation:
Based on the information in the tape diagram and table, we can see that the ratio of oil to vinegar in Iara's salad dressing is 8 to 1. This means that for every 8 spoonfuls of oil, she uses 1 spoonful of vinegar.
To calculate the amount of oil and vinegar in the dressing, we can use the following formula:
amount = original ratio * total amount of dressing ÷ (original ratio + 1)
For the oil, the formula would be:
oil amount = 8 * 33 ÷ (8 + 1) = 8 * 33 ÷ 9 = 88 spoonfuls
And for the vinegar, the formula would be:
vinegar amount = 1 * 33 ÷ (8 + 1) = 1 * 33 ÷ 9 = 11 spoonfuls
So the final answer is:
Oil: 88 spoonfuls
Vinegar: 11 spoonfuls
A state government gives property owners a tax rebate with the anticipation that each property owner will spend approximately p% of the rebate, and in turn each recipient of this amount will spend p% of what he or she receives, and so on. Economists refer to this exchange of money and its circulation within the economy as the “multiplier
effect.” The multiplier effect operates on the idea that the expenditures of one individual become the income of another individual. For the given tax rebate, find the total amount of spending that results, assuming that this effect continues without end.
Tax rebate: $400, p% = 75%
It should be noted that the amount based on the information will be $1600.00.
How to calculate the amountFrom the information, the state government gives property owners a tax rebate with the anticipation that each property owner will spend approximately p% of the rebate, and in turn each recipient of this amount will spend p% of what he or she receives, and so on.
We've been given the rebate as well.
Sum of an infinite Geometric Series = A/(1-r)
Rebate A $400.00
Rate 75.00%
Sum of an infinite Geometric Series = $400/(1-75%)
= $1600.00
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how to do question b, please
A. The linear relationship can be expressed by the equation, 3y = 5x + 10
B. For 25 kg, the height is 45 cm
For 52 kg, the height is 90 cm
C. For 60 cm, the mass is 34
For 80 cm, the mass is 46
What is the equation of line?The equation of a straight line is a relationship between x and y coordinates, The two point form of the equation of a straight line is,
y-y₁ = (y₂-y₁)/(x₂-x₁)*(x-x₁)
Given that,
The scatter plot,
which shows the linear relationship,
And passes through the points,
(10, 20), (40, 70)
the equation of line can be written as,
y - 20 = (70-20)/(40-10)*(x-10)
y - 20 = 50/30*(x-10)
y - 20 = 5/3*(x-10)
3y - 60 = 5x - 50
3y = 5x + 10
A. The linear relationship,
3y = 5x + 10
B. If x = 25, we can substitute this value into the equation to find the corresponding value of y:
3y = 5 x 25 + 10
3y = 125 + 10
3y = 135
Dividing both sides of the equation by 3:
y = 45
So, if x = 25, then y = 45.
similarly, the value of y for x = 25 is, 90
In the same manner,
when,
For y = 60 x will be 34
And for y = 80 x will be 46
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5. Are the triangles similar?
If yes, which angles are congruent?
The triangles ΔABC and ΔDEF are congruent with each other by the SAS postulate. And ∠ABC = ∠DEF, ∠BCA = ∠EFD, ∠CAB = ∠FDE, and AB / DE = BC / EF = CA / FD.
What is the triangle?The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180°.
In triangles ΔABC and ΔDEF, then we have
AB = DE
BC = EF
∠ABC = ∠DEF = 92°
Then the triangles ΔABC and ΔDEF are congruent with each other. Then we have
∠ABC = ∠DEF
∠BCA = ∠EFD
∠CAB = ∠FDE
And the corresponding ratios are given as,
AB / DE = BC / EF = CA / FD
The triangles ΔABC and ΔDEF are congruent with each other by the SAS postulate.
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if she drove back home using the same path she took out to the university and arrives 7.1 h after she first left home, what was her average speed for the entire trip, in kilometers per hour?
Her average speed for the entire trip, in kilometers per hour, is equal to 2d / (7.1 * 3600) * 3600 km/h
Let's assume that the total distance of the round trip is d kilometers and that she drove at a constant speed of v km/h for the entire trip. The time it takes for her to travel the entire distance at speed v is given by t = d/v.
Since she drove back home using the same path she took out to the university, her average speed for the entire trip must be equal to her speed on the way out and back. Therefore, the total time it took for her to complete the round trip is 2t = 2d/v.
Since the total time it took for her to complete the round trip is 7.1 hours, we can set up an equation:
2d/v = 7.1 hours
Converting hours to seconds and solving for v, we have:
v = 2d / (7.1 * 3600) km/s
Finally, converting to km/h, we get:
v = 2d / (7.1 * 3600) * 3600 km/h
Therefore, her average speed for the entire trip, in kilometers per hour, is equal to 2d / (7.1 * 3600) * 3600 km/h
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Write the equation of a circle whose center is at (-11,15) and whose radius is 9
Your answer must be in Standard Form AND simplified
Answer:
(x + 11)² + (y - 15)² = 81
Step-by-step explanation:
the equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k ) are the coordinates of the centre and r is the radius
here (h, k ) = (- 11, 15 ) and r = 9 , then
(x - (- 11) )² + (y - 15)² = 9² , that is
(x + 11)² + (y - 15)² = 81
Given the equation −15a = 75, solve for a. −60 −5 5 90
Answer:
-5
Step-by-step explanation:
−15a = 75
a = 75/-15
a = -5
The area of a rhombus is 360 sq cm if one of its diagonal is 40 cm , find the other diagonal
According to the area of rhombus and length of one diagonal, the length of other diagonal is 10.5 cm.
The formula for the length of the diagonal is as follows -
Area = product of diagonal 1 and diagonal 2/2
Keep the values in formula to find the length of diagonal
360 = 40 × diagonal 2/2
Rewriting the equation with diagonal 2 on Left Hand Side of the equation
Diagonal 2 = (360 × 2)/40
Performing multiplication on Right Hand Side of the equation
Diagonal 2 = 420/40
Performing division on Right Hand Side of the equation
Diagonal 2 = 10.5 cm
Thus, the diagonal 2 is 10.5 cm.
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PLEASE HELP!! (Click on Image for question)
Answer:
S = 75 T = 105Step-by-step explanation:
S by Vertically Opposite angle ruleT 180-75 =105 by corresponding anglesWhat is −203 − (−136)?
I need help! :((
Answer:
-67
Step-by-step explanation:
- 203 - (-136)
The 2 minuses cancel out each other, turning it into a plus sign.
-203 + 136 = -67
Basic addition
Step-by-step explanation:
Because there is a double negative in between 203 and 136 that would turn into a positive
So
-203+136
Now because 203 is negative you would take 203 and subtract 136 to get 67
Because 136 is less then 203 it would still be negative
So
The answer is -67
the size of an equilateral triangle are 6 cm long calculate the vertical height of the triangle
Answer:
6
Step-by-step explanation:
Let x be the vertical height
area of triangle=1/2×6×6=18
1/2×3×x=18/2
1.5x=9
x=6
2x+y=18 and y=4x+6 using substitioiuntion
so your problem is 2x+y=18 and y=4x+6
solution
solve for the first variable in one of the equations then substitute the result into the other equation
point form:
(2,14)
equation form
x=2, y=14
Evaluate the expression for the given value of the variables.
0.7d - 2.1f=
d= 15, f= 3
0.7d - 2.1f = Answer?
The value of the expression for the given condition is 4.2.
What is an expression?Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. An expression's bis as follows:
Expression: (Math Operator, Number/Variable, Math Operator)
Given expression,
0.7d - 2.1f
and d = 15, f = 3
substitute the values,
0.7d - 2.1f
=> 0.7(15) - 2.1(3)
=> 10.5 - 6.3 = 4.2
Hence the value of the expression is 4.2.
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Given that 6048 = 2^5 • 3^3 • 7,
find the smallest possible integer value of n for 6048y to be a perfect cube number, giving your answer as the product of its prime factors.
Answer:
6048 should be multiplied by 98.
Step-by-step explanation:
6048 = 2⁵ * 3³ * 7
To make 6048 a perfect cube, 6048 should be multiplied by 2 * 7 * 7.
2* 7 *7 = 98
Check: 6048 * 98 = 592704
592704 = 2⁶ * 3³ * 7³
[tex]\sqrt[3]{592704}= 2 * 2 * 3 * 7[/tex]
= 84
Solve this trigonometric equation
Answer:
18.7 units
Step-by-step explanation:
In this right-angled triangle, you are provided with:
Two angles (i.e. 36° and 90°)
One side (i.e. Line AC, which is 11 units)
Line AB is known as the 'hypotenuse' of the right-angled triangle, which is what needs to be determined.
On the basis of 36° angle:
The side opposite (i.e. Line AC) is known as the 'opposite' or 'perpendicular side'
The side adjacent (i.e. Line BC) is known as the 'adjacent' or 'base'
Trigonometric function:
The trigonometric function, which connects an angle, it's opposite side and the hypotenuse is the 'sine function':
sinФ = [tex]\frac{opposite}{hypotenuse}[/tex]
sin36° = [tex]\frac{11}{x}[/tex]
Cross-multiplication is applied:
x needs to be isolated and made the subject of the equation:
xsin36° = 11
≡ x = [tex]\frac{11}{sin36^{o}}[/tex]
∴ x = 18.7 units (Rounded off to 3 significant figures)
Scientist tag and release a group of salmon after they hatch. Later, they catch a sample of salmon that Return To The River and check them for tags. One sample 20 out of 400 returning salmon have tags what is the best prediction of the total number of tagged salmon in a sample of 2000?
The best prediction of the number of tagged salmon in a sample of 2000 is 100.
The best prediction of the number of tagged salmon in a sample of 2000 returning salmon can be estimated using the proportion of tagged salmon in the sample of 400.
The proportion of tagged salmon in the sample of 400 is [tex](\frac{20}{400} )=(\frac{1}{20} )[/tex].
According to proportion, if two sets of given numbers are increasing or decreasing in the same ratio, then the ratios are said to be directly proportional to each other. Proportions are denoted using the symbol '::' or '='.We can use this proportion:
To estimate the number of tagged salmon in a sample of 2000:
Tagged salmon in a sample of 2000 = [tex](\frac{1}{20}) * 2000[/tex] = 100
Therefore, the best prediction of the number of tagged salmon in a sample of 2000 is 100.
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Write an equation that you can use to find the value of x.
Perimeter of triangle: 16 in.
An equation that you can use is 16=
.
Answer:
16 = 3x
Step-by-step explanation:
We are here given a equilateral triangle in which each side length measure is " x " .
By perimeter we mean the sum of all the side lengths of the figure.
By question , we have each side length as x ,
So its perimeter would be ,
x + x + x = 3x
But it is given that the perimeter is 16in . So they must be equal .
Hence our required equation is ,
16 = 3x
and if we want to solve out for x , divide both the sides by 3 ,
x = 16/3
and we are done!
PLS HELP HOMEWORK DUE NOW
Answer:
two plus two equals five
Step-by-step explanation:
from 6 positive and 8 negative numbers, 4 numbers are chosen at random (without replacement) and multiplied together. what is the probability that the product is a positive number?
Let's say event A is the selection of four positive numbers, event B the selection of four negative numbers, and event C the selection of two positive and two negative numbers.
Since four numbers are chosen without replacement, n(A) = 6 × 5 × 4 × 3 = 360 n(B) = 8 × 7 × 6 × 5 = 1680. In event C, four numbers are to be chosen without replacement such that two numbers are positive and two numbers are negative.
This can be done in following ways: + + – – OR + – + – OR + – – + OR – + – + OR – – + + OR – + + – ∴ n(C) = 6 × 5 × 8 × 7 + 6 × 8 × 5 × 7 + 6 × 8 × 7 × 5 + 8 × 6 × 7 × 5 + 6 × 5 × 8 × 7 + 8 × 6 × 5 × 7 = 6 × (8 × 7 × 6 × 5) =10080 Here, total number of numbers = 14 ∴ n(S) = 14 × 13 × 12 × 11 = 24024
Since A, B, C are mutually exclusive events,
Required probability = P(A) + P(B) + P(C)
= n(A)/n(S) + n(B)/n(S)+ n(C)/n(S)
= 360+1680+10080/24024
= 505/1001
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\text{Determine the values of all positive} \ k \ \text{ for which the series}Determine the values of all positive k for which the series \text{will converge. } \ \ \text{ Express your answer in interval notation. }will converge. Express your answer in interval notation. LaTeX: \displaystyle \underset{n
The best way is to use the Ratio Test to see that the series = ∑∞ₙ₋₁ n/5ⁿ converges.
In mathematics, convergence definition is the property (some described by myriad series and functions) that it approaches its limit more and more distinctly as the arguments (variables) of the function increase or decrease, or as the number of terms in the series increases.
For example, the function y = 1/x converges to zero as x increases. Even in this case, the final value of x doesn't affect the value of y to actually be zero, and the marginal value of y is zero, since y can be made arbitrarily small by choosing a large enough "x". The line y = 0 (x-axis) is known as the asymptote of the function.
According to the Question:
Let aₙ= n/5ⁿ. If lim(n→∞)
|an+1|/ |an| <1, the Ratio Test will imply that
∑∞ₙ₋₁ aₙ = ∑∞ₙ₋₁ n/5ⁿ converges.
Now,
aₙ₊₁ = n + 1/ 5ⁿ⁺¹
= n + 1 /5.5ⁿ.
Therefore,
since these terms are positive,
|aₙ₊₁|/|aₙ| = n + 1 /5⋅5ⁿ
⇒ n +1/ 5ⁿ → 1/5 as n→∞
Hence,
∑∞ₙ aₙ = ∑∞ₙ₋₁ n/5ⁿ converges.
Full Question:
How do you test the series (n/5ⁿ ) from n = 1 to infinity for convergence? Determine the values of all positive, for which the series. Determine the values of all positive k for which the series. Express your answer in interval notation will converge. Express your answer in interval notation.
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Find the length of YZ
The length of YZ in the triangle is 12.5 units
How to determine the length of YZFrom the question, we have the following parameters that can be used in our computation:
The triangle
On the triangle, we have the following equivalent ratio
YZ : 5 = 10 : 4
Express as fraction
So, we have
YZ/5 = 10/4
This gives
YZ = 5 * 10/4
Evaluate
YZ = 12.5
Hence, the length is 12.5 units
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27,45,75,… find the 6th term
Answer:
141
Step-by-step explanation:
First, you need to identify the pattern. As we have 3 terms, the pattern is +18 then +30. So, we can determine the next term is +18. 75 + 18 = 93. 93 is the 4th term. We can also determine the next term is +30. 93 + 30 = 123. 123 is our 5th term. Based off of what we know, we can determine the next term will be +18. 123 + 18 = 141. This proves our 6th term is 141.
I hope this helped. If this isn't correct, I apologize. This is based off of the 3 terms shown. If this helped, leave a heart and leave stars.
A teacher plans to use a 40-inch long roll of string to form a border around a rectangular space on her bulletin board reserved for student use. What is the maximum amount of space, in square inches, that she can reserve on her bulletin board using this roll of string?
The maximum amount of space that the teacher can reserve on her bulletin board using the 40-inch long roll of string is 400 square inches.
A rectangle is a two-dimensional shape with four sides and four right angles. It is characterized by having two equal sides that are parallel to each other and two equal sides that are perpendicular to the first two sides.
First, let's consider the perimeter of the rectangle. The perimeter is the total length of the four sides of the rectangle.
So, if we use the entire 40-inch long roll of string to form the border, it will equal the perimeter of the rectangle. We can represent the length and width of the rectangle using variables "l" and "w", respectively.
The perimeter of the rectangle can be calculated using the formula: P = 2l + 2w.
Now, we can set the perimeter equal to 40 inches and solve for l and w.
P = 40
2l + 2w = 40
l + w = 20
Next, we want to find the maximum area of the rectangle. The area of a rectangle can be calculated using the formula: A = l * w.
So, to find the maximum area, we need to maximize the product of l and w. This can be done by setting l and w equal to half of the perimeter, or 20 inches each.
l = w = 20
A = l * w
A = 20 * 20
A = 400 square inches
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The bar graph shows the number of games a soccer team played each month. Use the data to find each listed value.
Median =
Lower quartile =
Upper quartile =
Interquartile range =
By using the data from the bar graph, each of the statistical value are as follows;
Median = 6.
Lower quartile = 4.
Upper quartile = 7.5.
Interquartile range = 3.5
How to calculate the median number of game?From the information provided in the bar graph above, we can logically deduce the following data set:
Data set = {3, 5, 6, 7, 8}
Median = 6.
For Q₁ of the lower half of the data set, we have:
Lower quartile, Q₁ = {3, 5}
Lower quartile, Q₁ = (3 + 5)/2
Lower quartile, Q₁ = 8/4 = 4.
For Q₃ of the upper half of the data set, we have:
Upper quartile, Q₃ = {7, 8}
Upper quartile, Q₃ = (7 + 8)/2
Upper quartile, Q₃ = 15/2 = 7.5.
Mathematically, interquartile range (IQR) is the difference between lower quartile (Q₁) and upper quartile (Q₃):
IQR = Q₃ - Q₁
IQR = 7.5 - 4
IQR = 3.5
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suppose sean makes 10 tables a month, each of which he can sell for $200. given that the average cost of making each table is $150, should sean make more or fewer tables each month?
It's impossible to say Sean should base his decision on the marginal cost and marginal benefit of creating another table. The marginal cost of making a table is not the same as the average cost of making a table. As a result, there is insufficient information to determine what Sean should do.
The opportunity cost of an activity is the value of what must be sacrificed in order to engage in the activity (plus the cost). A cost that cannot be recovered at the time a decision must be made.
The science of decision-making is often used as a crude definition of economics. This stems from the fact that economics is frequently concerned with making the best decision in the most efficient manner. One way to quantify this is to consider total costs and total benefits.
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which expression is the factorization of x2 10x 21? (x 3)(x 7) (x 4)(x 6) (x 6)(x 15) (x 7)(x 1
Option A is the correct answer. The expression is (x+3)(x+7).
The given equation is x²+10x+21
we have to find the roots of the equation
x²+10x+21 =0
x²+3x+7x+21
x(x+3)+7(x+3)
(x+3),(x+7)
Now, we need to remember to factorize the given expression, x²+10x+21, and have to choose two numbers when you add them you get "10" and when you multiply them you get "21".
These numbers are:
7 and 3
Because:
7+3=10
7*3=21
Therefore, you get that the factorization of the expression is the following:
(x+3)(x+7)
We can conclude that this factorization matches the first option.
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solve this asap please
Answer:
a) See attached image
b) AA (or AAA) similarity; either one is correct
c) The statue is 22 meters tall
Step-by-step explanation:
Let's assume the height of the statue is h (to be determined)
a) First let's create a diagram to model this scenario. See attached image
One of the properties of a mirror reflection is that the angle of incidence i.e. the angle at which light strikes the mirror = angle of reflection i.e. the angle at which the light reflects off the mirror
These angles are shown as α and β in the diagram
The two triangles we choose to solve this problem are
ΔABC and ΔCED
Given that ∠BCA is a complementary angle to angle of reflection and ∠ECD is complementary to the angle of incidence, it follows that
m∠BCA = m∠CED
m∠BAC of ΔABC = m∠ECD of ΔECD = 90°
Therefore the third angles of both triangles are also equal
b) By the AA (or AAA) or Angle-Angle Similarity theorem, the two triangles are similar
Therefore the ratio of the sides must be the same for corresponding sides
Therefore
[tex]\dfrac{AB}{DE} = \dfrac{AC}{CD} \\\\Given AD = 12, CD = 3\\\\\dfrac{AD}{CD} = \dfrac{12}{3}= 4\\\\\therefore \\\\\dfrac{AB}{ED} = 4\\\\[/tex]
Since ED is the height of the girl = 5.5 meters and AB = height of the statue = h
we get
[tex]\dfrac{h}{5.5} = 4\\\\h = 4 \times 5.5\\\\h = 22\\\\[/tex]
Answer (c) height of statue = 22 meters
Question 16 of 25
Which is a correct expansion of (2x + 3)(2x² - 5)?
A. 2x 2x² + 2x (-5)+3 2x+3•(-5)
OB. 2x 2x²+3 2x² + 2x² (-5) + 3 • (−5)
OC. 2x 2x²+2x (-5)+3.2x²+3• (-5)
The correct expansion of the given expression would be = 2x 2x²+2x (-5)+3.2x²+3• (-5). That is option C.
How to determine the correct expression of expansion?The given expression of equations;
(2x + 3)(2x² - 5). That is the product of 2x+3 and 2x²-5
= 2x *2x² + 2x*(-5) + 3*2x²+3×(-5)
= 4x³ - 10x+ 6x²-15
= 10x⁵ -10x-15.
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Answer:c
Step-by-step explanation:
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