The first question is about algebra with two variables. To calculate the algebra, sum up all the same variable and count the value.
We have an mathematical expression: (5y + 2)(y - 3).
Find the equivalent value!
The equivalent value is
= (5y + 2)(y - 3)
= 5y² + (-15y) + 2y - 6
= 5y² - 13y - 6
The expression of (5y + 2)(y - 3) is equivalent to 5y² - 13y - 6.
The second question is about length in coordinate plane. The following is the formula for the length in coordinate plane.
d = √[(x₂ - x₁)² + (y₂ - y₁)²]
A line segment with endpoints (-6, 2) and (3, 1).
Find the length!
From the endpoints, we have
x₁ = -6y₁ = 2x₂ = 3y₂ = 1The length is
d = √[(3 - (-6))² + (1 - 2)²]
d = √[9² + (-1)²]
d = √[81 + 1]
d = √82
Hence,
The equivalent value is 5y² - 13y - 6.The line segment has a length of √82.Learn more about algebra here:
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You have $2,000 in your savings account that earns interest at a rate of 8% for 5 years. What is the amount of interest you would earn? *Remember, I = P x R x T
Answer:
$2938.66
Step-by-step explanation:
2000x1.08(to the power of 5) = 2938.656154
rounded to 2s.f is $2938.66
Fred decided to use some change to buy some brownies that he wanted for dessert. After
pulling the coins from his pocket, Fred paid with 3 quarters, 4 dimes, 2 nickels, and 1
penny. How much money did Fred spend on brownies?
Answer:
Fred spent $3.18 on brownies.
Me podrían dar una explicación sobre Renacimiento de la estadística
Some methods of statistical analysis include:
mean, standard deviation, regression, hypothesis testing, sample size determinationThe word "renaissance" simply means the rebirth of a thing or something and in this case, it would seem to mean the rebirth of statistics to include better ways and methods of data gathering, collection and analysis.
A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean and this is one of the more "modern" ways of data gathering in statistics as these methods have come a long way from older methods of gathering data such as human statistics and census methods.
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The English translation is:
Could you give me an explanation about the Renaissance of Statistics?
A woman bought a for $500 and then sold it for $900. She bought it back for $700and then sold it again for $600. How much did she gain or lose on these transactions?
Answer: she lost 500 ,gained 900 ,lost 700, gained 600
Step-by-step explanation:
Which set of equivalent fractions can be used when adding 7/8 and 5/12 ? Select three answer’s
The fraction equivalent of 7/8 + 5/12 is 31/24
What is a fraction in math?A fraction is a part of a whole. In arithmetic, the number is expressed as a quotient, in which the numerator is divided by the denominator. In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator. In a proper fraction, the numerator is less than the denominator.
Given here: Two fractions 7/8 and 5/12
Now sum of the two fractions are 7/8+5/12
We know When two or more fractions with different denominators are added together, then we cannot the numerators directly. Thus Make the denominators of the fractions same, by finding the LCM of denominators and rationalising them with LCM(8,12)=24
Thus, 7/8+5/12= 21+10 /24
= 31/24
Hence, The fraction equivalent of 7/8 + 5/12 is 31/24
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The baker made a batch of chocolate chip, oatmeal raisin, and sugar cookies. If P(chocolate chip) = 0.25, interpret the likelihood of randomly selecting a chocolate chip cookie from the batch.
Equally likely and unlikely
Likely
Unlikely
This value is not possible to represent probability of a chance event.
The likelihood of randomly selecting a chocolate chip cookie from the batch is unlikely
How to determine the likelihoodFrom the question, we have the following parameters that can be used in our computation:
P(chocolate chip) = 0.25
Probability values less than 0.5 are unlikely
0.25 is less than 0.5
This means that the likelihood is unlikely
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What is the value of x?
Can someone draw on the parallelogram and explain to me how it's solved in detail?
I want step by step explanations.
The value of x in the parallelogram is calculated to be 11
How to find the value of xThe value of x is solved using the property of a parallelogram which says that the opposite angles are equal
Applying this mathematically gives
7x - 2 = 75
collecting like terms
7x = 75 + 2
7x = 77
Isolating x by dividing through by 7
7x / 7 = 77 / 7
x = 11
so we found the value of x to be 11
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Solve 9=2x^2+3x in quadratic equation
Answer: x=-3 & x=3/2
Step-by-step explanation:
1. Simplify the expression
- Divide both sides by the same factor
9=2x^2+3x
2x^2 + 3x - 9 = 0
2. Use the quadratic formula
- Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.
2x^2 + 3x - 9 = 0
a = 2
b = 3
c = -9
x = √-3±3^2−4⋅2(−9)/2⋅2
3. Simplify, again.
- Evaluate the exponent
- Multiply the numbers
- Add the numbers
- Evaluate the square root
x=−3±9/4
4. Separate the equations
- To solve for the unknown variable, separate into two equations: one with a plus and the other with a minus.
x=−3+9/4
x=-3-9/4
5. Solve
- Rearrange and isolate the variable to find each solution.
x=3/2
x=-3
cuanto es 3/8 de 1568
Answer:
588
Step-by-step explanation:
number 6 only please help
Answer: 1
_
32
Step-by-step explanation: because the are skip count and adding the number every single time .
A paper mill cuts posterboards that are 36 inches long a posterboard is acceptable if the percent error of its length is less than one. 5% what is the range of acceptable length show your work
Answer:
The range of acceptable length is between 35.28 inches and 36.72 inches.
To calculate the range of acceptable length:
Lower bound: 36 in. - (36 in. x 0.05) = 35.28 in.
Upper bound: 36 in. + (36 in. x 0.05) = 36.72 in.
25) Peter cut a piece of lumber 9 5/6 feet long from a piece that was 15 feet long. How much
of the lumber was left?
31/6 or 5.167 feet of lumber was left.
What are mathematical operations?The term "operation" in mathematics refers to the process of computing a value utilizing operands and a math operator. For the specified operands or integers, the math operator's symbol has predetermined rules that must be followed. In mathematics, there are five basic operations: addition, subtraction, multiplication, division, and modular forms.
Given, Peter cut a piece of lumber 9 5/6 feet long from a piece that was 15 feet long.
Since the total length of wood is 15 feet
Thus,
The remaining wood = 15 - (9 5/6)
The remaining wood = 6 - 5/6
The remaining wood = 31/6
therefore, 31/6 or 5.167 feet of the lumber was left.
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PLEASE HELP !!!!!!!!!!!!!!!
Model with Mathematics Jonathan uses this
area model to show the product of two mixed
numbers. What equation models the product?
The equation that models the product is 5 × 5 = 25
Numerical equation:In mathematics, a numerical expression is a combination of numbers or integers combined using mathematical operators like addition, subtraction, multiplication, division, etc. In this, we don't use variables like x, y, etc., or any unknown quantity.
Here we have
Jonathan uses the area model to show the product of two mixed numbers
The equation that models the product can be formed as follows
Here number of units along length = 5 units
Number of units along breadth = 5 units
Area = 5 × 5 = 25
Therefore,
The equation that models the product is 5 × 5 = 25
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Complete the equation for the line perpendicular to g(x) = 4x + 3 and passing
through the point (7,3)
y =
Two lines that are perpendicular to one another have a slope product that is negative one. If m1 and m2 are the slopes of the two lines, then m1.m2 = -1.
What is meant by line perpendicular?Many perpendicular lines can be seen in the actual world. Examples include the edges of a set square, a clock's arms during particular times of day, the corners of a blackboard, a window, and the Red Cross emblem. Right angles are formed when two perpendicular lines cross. Examine the slopes of the equations in order to determine whether they are perpendicular. Perpendicular lines' slopes are their opposite reciprocals.By comparing the equation of the line with y = mx + c, where m is the line's slope and c is its y-intercept, it is now possible to determine the slope of line y = 4x + 3.As a result, we may state that m1 = 4, which is the slope of this line.
As a result, m2 = -1/4 is the slope of the line perpendicular to this line.
Now, the 2nd line's general equation can be expressed as
y = (-1/4)x + c —— 1)
Since point (-12,4) is located on this line, we may solve for c by substituting y = -12 and x = 4 in the equation above.
We may finish the equation for the line perpendicular to the line y = 4x+3 once we know the value of c.
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If elephant grass grows 3 1/2 inches a day, how many inches will it grow in 8 days?
Answer:
28 inches in 8 days.
Step-by-step explanation:
1. Multiply 3.5 inches by 8 days to calculate the total inches:
2. 3.5 inches x 8 days = 28 inches
Therefore, elephant grass will grow 28 inches in 8 days.
7/3 four different ways
7/3 in four different ways is 7/12
What is division?Division is the opposite of multiplication. If 3 groups of 4 make 12 in multiplication, 12 divided into 3 equal groups give 4 in each group in division. The main goal of dividing is to see how many equal groups are formed or how many are in each group when sharing fairly.
If 100 apples are to be shared by 20 girls equally. The number of apple each girl will get is 100/20 = 5 apples each.
Similarly to put 7/3 in four different ways we have to divide 7/3 by 4
7/3 ÷ 4 = 7/3 × 1/4
= 7/12
therefore 7/12 of the four places will give 7/3
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Seth purchased a shiny key chain costing $0.34. If Seth received $0.69 in change, how much money did he give to the cashier?
Answer:
$1.03
Step-by-step explanation:
If Seth purchased a shiny key chain costing $0.34 and received $0.69 in change, then he gave the cashier $0.34 + $0.69 = $1.03.
Answer:
x - 0.69 = 0.34
x = 1.03
Therefore, Seth gave the cashier $1.03.
this graph shows data related to a company's stock price and time. which type of function best models data? A. a linear function with a positive slope
B. a square root function
C. a quadratic function with a negative value of a
D. a quadratic function with a positive value of a
Answer:
C. a quadratic function with a negative value of a
Step-by-step explanation:
It is likely that a quadratic function with a negative value of a would be the best model for this data, as it would represent a parabolic shape that can accommodate a downward trend, followed by an upward trend, in the stock price. The value of "a" determines the direction of the parabola, with a negative value resulting in a downward-facing parabola, which is appropriate for a stock price that starts low and increases over time. This type of function would provide a good fit for the data, especially if there are fluctuations or ups and downs in the stock price over time.
I need to find the domain and range
The domain and range are x >= 3 and y >= 0
How to find the domain and rangeFrom the question, we have the following parameters that can be used in our computation:
The graph
The domain is the set of the input values
On the graph, we have
Input values start from x = 3 and increases
So, the domain is x >= 3
The range is the set of the output values
On the graph, we have
output values start from y = 0 and increases
So, the range is y >= 0
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What is the equation of the line which has a gradient of -2 and passes through the point (1, 7)
The equation of line is y = -2x + 9 , where the slope is m = -2
What is an Equation of a line?The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept
And y - y₁ = m ( x - x₁ )
y = y-coordinate of second point
y₁ = y-coordinate of point one
m = slope
x = x-coordinate of second point
x₁ = x-coordinate of point one
The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Given data ,
Let the equation of line be represented as A
Now , the value of A is
Let the point be represented as P ( 1 , 7 )
Let the slope of the line be m = -2
And , equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept
Substituting the values in the equation , we get
y - 7 = -2 ( x - 1 )
On simplifying the equation , we get
y - 7 = -2x + 2
Adding 7 on both sides of the equation , we get
y = -2x + 9
Hence , the equation of line is y = -2x + 9
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In traveling across flat land, you notice a mountain directly in front of you. Its angle of elevation (to the peak) is 3.5°. After you drive x = 11 miles closer to the mountain, the angle of elevation is 9°. Approximate the height of the mountain. (Round your answer to one decimal place.)
Answer:
Below
Step-by-step explanation:
See diagram
.158384 = height/x <====== x = height/.15838
.061162 = height /(11+x) <====sub in x from above into here
.061162 = height /(11+height/.158384) solve for height
.672789 + .386163 height = height
height = 1.1 mi high
Solve the following inequality: |2x+5|<2−x
Step-by-step explanation:
To solve the inequality |2x + 5| < 2 - x, we need to split it into two cases:
When 2x + 5 > 0:
In this case, the absolute value is positive, so we can simplify the inequality as follows:
2x + 5 < 2 - x
Expanding the left side:
3x + 5 < 2
Subtracting 5 from both sides:
3x < -3
Dividing both sides by 3:
x < -1
So the solution for this case is x < -1.
When 2x + 5 < 0:
In this case, the absolute value is negative, so we can simplify the inequality as follows:
(2x + 5) < 2 - x
Expanding the left side:
-2x - 5 < 2 - x
Adding x to both sides:
-2x - 5 + x < 2
Combining like terms:
-x - 5 < 2
Adding 5 to both sides:
-x < 7
Dividing both sides by -1:
x > -7
So the solution for this case is x > -7.
Taking the union of the two solutions, we get:
-7 < x < -1.
This means that x is between -7 and -1, excluding -7 and -1.
the williams 1/3 of their total monthly income for rent and 1/4 for food. what fraction is remains for other expenses each month?
Answer:
5/12
Step-by-step explanation:
Find the LCM for denominators 3 and 4, this would be 12.
[tex]\frac{1*3}{4*3} = \frac{3}{12}[/tex]
[tex]\frac{1*4}{3*4} = \frac{4}{12}[/tex]
Add both fractions together:
3/12 + 4/12 = 7/12
Subtract 7 from 12 to find the remaining amount to make 12:
12 - 7 = 5
Therefore, the fraction that remains for other expenses is [5/12]
What congruence statement is correct for the congruent triangles shown?
A) ABC=ADC
B) ACB=CDA
C) ABC=CDA
D) ACB= ACD
E) BCA= DCA
The statement that is correct for the congruent triangles shown above are ABC=CDA. That is option C.
What is congruent triangles?The congruent triangles are those two triangles that have all it's edges and angles equal in size.
There are two different types of triangle which include the following:
Triangle ABC andTriangle ADC.The sides and angles that are equal include the following;
< A = < C
< D = < B
Therefore the statement that shows that the two given triangles are equal = ABC=CDA.
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You would like to have $500,000 when you retire in 30 years. How much should you invest each quarter if you can earn a rate of 6.6% compounded quarterly? a) How much should you deposit each quarter? b) How much total money will you put into the account? c) How much total interest will you earn?
If you would like to have $500,000 when you retire in 30 years.
a. Amount earned $2,322.76.
b. Total money $2,322.76
c. Total interest earned $225,268.80
How to find the amount earned?a) To calculate the amount you need to deposit each quarter to reach $500,000 in 30 years, you can use the formula:
P = A / (1 + r/n)^(nt)
P = $500,000 / (1 + 0.066/4)^(4 * 30)
P = $2,322.76
b) Total money
Total money = $2,322.76 * 4 quarters/year * 30 years
Total money = $2,322.76
c) Total interest earned
Total interest earned = $274,731.20 - $500,000
Total interest earned = $225,268.80
Therefore the amount earned is $2,322.76.
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If your original biconditional statement is true, would the contrapositive be true? Give an example to illustrate your reasoning. '
If your original biconditional statement is true, would the contrapositive be true
What is Biconditional statement ?
Biconditional statement can be defined as if in both cases they are equal than they are true otherwise false.
Yes,
If your original biconditional statement is true, would the contrapositive be true
Let us suppose,
P ⇔ Q
Suppose P = true and Q = true
So, P ⇔ Q is true
and ~P = false and ~Q = false
¬Q ⇔ ¬P is also true
Therefore, If your original biconditional statement is true, would the contrapositive be true
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FLUENCY AND SKILLS PRACTICE
Lesson 21 Session 2
Solving One-Variable Addition Equations
Solve each equation for the unknown. The answers are mixed up at the bottom.
of the page. Cross out the answers as you complete the problems.
What is d plus 3.2 equals 6.3 minus 2.5 and what’s 25 plus k plus 4(1/4) equals 37
The solution for the One-Variable Addition Equations is,
1: d = 0.6, 2: k = 11, and 3: y = 3.
What is a linear equation?When an algebraic equation is graphed, it always results in a straight line since each term in a linear equation has an exponent of 1. For this reason, it is referred to as a "linear equation."
There are both one-variable and two-variable linear equations.
Given 1: d + 3.2 = 6.3 - 2.5
subtract 3.2 from both sides
d = 6.3 - 2.5 - 3.2
d = 0.6
2: 25 + k + 4(1/4) = 37
divide 4/4 = 1
25 + k + 1 = 37
k = 37 - 26
k = 11
3: 4(1/2) + y = 10(1/2)
so 4/2 = 2 and 10/2 = 5
2 + y = 5
y = 3
Hence d = 0.6, k = 11, and y = 3.
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What's the measurement of angle B?
Answer:
121
Step-by-step explanation:
The formula for calculating the sum of interior angles is ( n − 2 ) × 180
so you have 5 sides n=5
so total is 3*180 = 540
there are 3 right angles = 3/90 = 270
so 540-270 = 270 = angle B+ angle C
so 6x+1 +8x-11 =270
14x-10 = 270
14 x =280
x=20
B =6x+1 =121
Let A denote the event of placing a $1 straight bet on a certain lottery and winning. Suppose that, for this particular lottery, there are 8,100 different ways that you can select the four digits (with repetition allowed) in this lottery, and only one of those four-digit numbers will be the winner. What is the value of P(A)? What is the value of P(A)?
The probability of the winner is 1/8100. And the probability of losing is 8099/8100.
What is probability?Its fundamental concept is that someone will nearly surely occur. The proportion of positive events in comparison to the total of occurrences.
Then the probability is given as,
P = (Favorable event) / (Total event)
Let A signify the occasion of putting down a $1 straight bet on a specific lottery and winning. Assume that, for this specific lottery, there are 8,100 unique ways that you can choose the four digits (with reiteration permitted) in this lottery, and only one of those four-digit numbers will be the victor.
Then the probability of the winner is given as,
P(A) = 1 / 8,100
The probability of losing is given as,
Q(A) = 1 - P(A)
Q(A) = 1 - 1/8100
Q(A) = 8,099 / 8,100
The probability of the winner is 1/8100. And the probability of losing is 8099/8100.
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