Answer: Hi!
Option I is correct. 3(2x + 4) = 6x + 12
When you use the distributive property, you multiply the term outside of the parentheses (in this case, 3) by the terms inside of the parentheses (in this case, 2x and 4.)
Hope this helps!
The net of a square pyramid is shown below. What is the surface area of the pyramid?
Answer:
D. [tex] 192 cm^2 [/tex]
Step-by-step explanation:
The net of the pyramid is made up of 1 square base and 4 triangles
Surface area of the pyramid = area of square + 4(area of square)
[tex] S.A = (s^2)+ 4(\frac{1}{2}bh) [/tex]
Where,
s = 8
b = 8
h = 8
[tex] S.A = (8^2)+ 4(\frac{1}{2}*8*8) [/tex]
[tex] S.A = 64+ 4(32) [/tex]
[tex] S.A = 64+ 128 [/tex]
[tex] S.A = 192 cm^2 [/tex]
192 cm^2
Step-by-step explanation:
base = 8 x 8 = 64
1 triangle = 1/2 x 8 x 8 = 32
32 x 4 = 128
128+64 = 192 cm^2
Solve the equation V2 + 4 + 12 = 3-
a.
330
-733
d. 753
b. -776
Please select the best answer from the choices provided
Answer:
d
Step-by-step explanation:
trust
Answer:
x = -733
Step-by-step explanation:
[tex]\sqrt[3]{x+4}[/tex] + 12 = 3
[tex]\sqrt[3]{x+4}[/tex] = -9 (cube both sides)
x + 4 = -729
x = -733
someone help please
Step-by-step explanation:
Hey, there!
Here,
[tex] = 4 {x}^{2} - 4x + 1[/tex]
[tex]or ,\: ( {2x)}^{2} - 2.2x .1 + 1[/tex]
[tex]or ,\: ( {2x - 1)}^{2} [/tex]
We got this because,
[tex]( {2x - y)}^{2} = 4 {x}^{2} - 4x + 1[/tex]
By using formula,
[tex]( {x - y)}^{2} = {x}^{2} - 2xy + 1[/tex]
Hope it helps..
Answer: (x+-0.5)²=0
Step-by-step explanation:
4x²-4x+1=0
(2x-1)²=0 ⇔ completing the square
--------------------------------------------
since the question asked for the x should be 1, then we should divide 2x by 2 so to get rid of the 2 in front of the x.
this will change the original equation into: (x+(-0.5))²=0
------------------------------------------------------------------------------------------------------------
You can also directly divide 4 from 4x²-4x+1=0 to get rid off the terms in front of x.
x²-x+0.25=0
(x-0.5)²=0
(x+(-0.5))²=0
what is the angle of the triangle below?
Write the decimal as a fraction or a mixed number. Write your answer in simplest form. 0.2
Answer:
[tex] \frac{1}{5} [/tex]
Step-by-step explanation:
[tex]0.2 \times \frac{10}{10} = \frac{2}{10} = \frac{1}{5} [/tex]
This number can't be written as a mixed number since it is proper fraction.
It's numerator is less than it's denominator.
Hope this helps ;) ❤❤❤
A die is thrown. Describe the following events: (i) A: a number less than 7 (ii) B: a number greater than 7 (iii) C: a multiple of 3 (iv) D: a number less than 4. (v) E: an even number greater than 4 (vi) F: a number not less than 3 (vii) find A× (B∩ E), A ∩B, B ∪ C, E ∩ F∩ D. Answer this if u want to be marked as the brainliest!
A: The probability of a number rolling less than 7 is 100% or 1 because a dice only has numbers 1,2,3,4,5, and 6. 1,2,3,4,5, and 6 are all less than 7 so you are guaranteed to roll a number less than 7.
B: The probability of a number rolling more than 7 is 0% or 0 because a dice only has numbers 1,2,3,4,5, and 6. 1,2,3,4,5, and 6 are all less than 7 so it's not possible to roll a number more than 7.
C: The probability of a number rolling to be a multiple of three is 33.33(repeating)% or 1/3. Out of 1,2,3,4,5, and 6, the multiples of 3 are, 3 and 6. 3 and 6 is two numbers out of six numbers. 2 out of 6 simplifies to 1 out of 3.
D: The probability of a number rolling to be less than 4 is 50% of 1/2. Out of the numbers, 1,2,3,4,5, and 6, only 1,2, and 3 are less than 4. 1,2, and 3 is three numbers out of six numbers. 3 out of 6 simplifies to 1 out of 2.
E: The probability of a number rolling to be an even number greater than 4 is 0.166(repeating) or 1/6. Out of the numbers, 1,2,3,4,5, and 6, 2,4, and 6 are even numbers. Out of 2,4, and 6, only 6 is greater than 4. 4 is one number out of 1,2,3,4,5, and 6 (six numbers).
F: The probability of a number rolling to be a number not less than 3 is 50% or 1/2. "Not less than" actually means greater than. In the numbers, 1,2,3,4,5, and 6, only 4,5, and 6 are greater than 3. 4,5, and 6 are three numbers. 3 out of 6 simplifies to 1 out of 2.
I don't really know the answer to the last question but anyways I hope this helped! ♡
❀ Have a good day! ❀
The sum of two numbers, x and y, is 12. The difference of four times the larger number and two
times the smaller number is 18. Whích system of equations should you use to find the two
numbers?
O
A X-y=12
4x - 2y = 18
O B x + y = 12
X-y= 18
C x+y=12
2x - 4y = 18
D x + y = 12
4% - 2y = 18
Answer:
D
Step-by-step explanation:
"Sum" indicates that we add the two variables so we can eliminate option A because that has x - y = 12 not x + y = 12. We can eliminate option B because the second equation should be 4x - 2y = 18, not x - y = 18. For that same reason, we can eliminate C because the coefficients are swapped. I will assume that in option D, the second equation is 4x - 2y = 18. Since we have eliminated everything else, the answer is D.
Which of the following is not a 3-D shape? A. quadrilateral B. cube C. sphere D. prism
Answer:
A.
Step-by-step explanation:
A quadrilateral is simply a shape with 4 sides, therefore it does not HAVE to be 3-D.
Answer:
Quadrilateral.
Step-by-step explanation:
A quadrilateral is a 2d shape not 3d.
Use Newton's method to find an approximate solution of ln(x)=10-x. Start with x_0 =9 and find x_2 .
Answer:
x₂ = 7.9156
Step-by-step explanation:
Given the function ln(x)=10-x with initial value x₀ = 9, we are to find the second approximation value x₂ using the Newton's method. According to Newtons method xₙ₊₁ = xₙ - f(xₙ)/f'(xₙ)
If f(x) = ln(x)+x-10
f'(x) = 1/x + 1
f(9) = ln9+9-10
f(9) = ln9- 1
f(9) = 2.1972 - 1
f(9) = 1.1972
f'(9) = 1/9 + 1
f'(9) = 10/9
f'(9) = 1.1111
x₁ = x₀ - f(x₀)/f'(x₀)
x₁ = 9 - 1.1972/1.1111
x₁ = 9 - 1.0775
x₁ = 7.9225
x₂ = x₁ - f(x₁)/f'(x₁)
x₂ = 7.9225 - f(7.9225)/f'(7.9225)
f(7.9225) = ln7.9225 + 7.9225 -10
f(7.9225) = 2.0697 + 7.9225 -10
f(7.9225) = 0.0078
f'(7.9225) = 1/7.9225 + 1
f'(7.9225) = 0.1262+1
f'(7.9225) = 1.1262
x₂ = 7.9225 - 0.0078/1.1262
x₂ = 7.9225 - 0.006926
x₂ = 7.9156
Hence the approximate value of x₂ is 7.9156
Find the absolute minimum and absolute maximum values of f on the given interval. f(t) = t 25 − t2 , [−1, 5]
Answer: Absolute minimum: f(-1) = -2[tex]\sqrt{6}[/tex]
Absolute maximum: f([tex]\sqrt{12.5}[/tex]) = 12.5
Step-by-step explanation: To determine minimum and maximum values in a function, take the first derivative of it and then calculate the points this new function equals 0:
f(t) = [tex]t\sqrt{25-t^{2}}[/tex]
f'(t) = [tex]1.\sqrt{25-t^{2}}+\frac{t}{2}.(25-t^{2})^{-1/2}(-2t)[/tex]
f'(t) = [tex]\sqrt{25-t^{2}} -\frac{t^{2}}{\sqrt{25-t^{2}} }[/tex]
f'(t) = [tex]\frac{25-2t^{2}}{\sqrt{25-t^{2}} }[/tex] = 0
For this function to be zero, only denominator must be zero:
[tex]25-2t^{2} = 0[/tex]
t = ±[tex]\sqrt{2.5}[/tex]
[tex]\sqrt{25-t^{2}}[/tex] ≠ 0
t = ± 5
Now, evaluate critical points in the given interval.
t = [tex]-\sqrt{2.5}[/tex] and t = - 5 don't exist in the given interval, so their f(x) don't count.
f(t) = [tex]t\sqrt{25-t^{2}}[/tex]
f(-1) = [tex]-1\sqrt{25-(-1)^{2}}[/tex]
f(-1) = [tex]-\sqrt{24}[/tex]
f(-1) = [tex]-2\sqrt{6}[/tex]
f([tex]\sqrt{12.5}[/tex]) = [tex]\sqrt{12.5} \sqrt{25-(\sqrt{12.5} )^{2}}[/tex]
f([tex]\sqrt{12.5}[/tex]) = 12.5
f(5) = [tex]5\sqrt{25-5^{2}}[/tex]
f(5) = 0
Therefore, absolute maximum is f([tex]\sqrt{12.5}[/tex]) = 12.5 and absolute minimum is
f(-1) = [tex]-2\sqrt{6}[/tex].
In a recent year, 32.3% of all registered doctors were female. If there were 46,300 female registered doctors that year, what was the total number of
registered doctors?
Round your answer to the nearest whole number.
Answer:
143,344
Step-by-step explanation:
Let d represent the total number of registered doctors. The given relation is ...
0.323d = 46,300
Dividing by the coefficient of d, we get ...
d = 46,300/0.323 ≈ 143,343.7
The total number of registered doctors was about 143,344.
how to solve this question
Step-by-step explanation:
A + B + C = 360
[2/3]A + B + [4/3]C = 360
[2/3]A + [4/3]B + C = 360
A + B + C = 360
We could extract from all of this that Cans A, B, C must have equal amount of paint inside in order to attain those conditions slated. Thus we could tell that the amount of paint in each can is 60L.
Answer:
A)60l
B)60l
Step-by-step explanation:
Jensen and Raju had the same amount of money at first. After Jensen spent
$64 and Raju spent $148, Jensen had 3 times as much money as Raju. How
much money did each boy have at first?
Step-by-step explanation:
Both of them had $x
Later
Jensen=x-64
Raju=x-148
Jensen=3*Raju
x-64=3(x-148)
x-64=3x-444
3x-x=444-64
2x=380
x=$190
16y — 13= —157 solve for y
Which point is a solution to this system of inequalities?
y < 1/2x – 3
y + 2x > 6
Answer: C. (5, -2)
Step-by-step explanation:
Graph each equation:
Equation 1: y < (1/2)x - 3 --> m = (1/2) b = -3, dashed line, shaded below
Equation 2: y > -2x + 6 --> m = -2 b = 6, dashed line, shaded above
or plug the values into the equations. It must be TRUE for both equations:
y < (1/2)x - 3 y > -2x + 6
(7, -8) True False
(2, -3) True False
(5, -2) True True <-- This works!
(4, 1) False True
Inequalities help us to compare two unequal expressions. The correct option is C.
What are inequalities?Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.
For a point to be the solution of the system of inequalities, the point when substituted in the inequalities must satisfy both the given inequalities.
A. (7, -8)
y < 1/2x – 3
-8 < (1/2)7 - 3
-8 < 0.5
y + 2x > 6
-8 + 2(7) > 6
-8 + 14 > 6
6 > 6
Since the second inequality is not satisfied, therefore, the given point is not the solution.
B. (2, -3)
y < 1/2x – 3
-3 < (1/2)2 - 3
-3 < -2
y + 2x > 6
-3 + 2(2) > 6
-3 + 4 > 6
1 > 6
Since the second inequality is not satisfied, therefore, the given point is not the solution.
C. (5, -2)
y < 1/2x – 3
-2 < (1/2)5 - 3
-3 < -2
y + 2x > 6
-2 + 2(5) > 6
-2 + 10 > 6
8 > 6
Since both the inequality are satisfied, therefore, the given point is the solution.
D. (4, 1)
y < 1/2x – 3
1 < (1/2)4 - 3
1 < -1
Since the first inequality is not satisfied, therefore, the given point is not the solution.
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Solve for the largest value of $x$ such that $5(9x^2+9x+10) = x(9x-40).$ Express your answer as a simplified common fraction.
Hello, please consider the following.
[tex]\begin{aligned}5(9x^2+9x+10) &= x(9x-40)\\&=9x^2-40x\end{aligned}\\\\<=> 45x^2+45x+50=9x^2-40x\\\\<=> (45-9)x^2+(45+40)x+50=0\\\\<=> 36x^2+85x+50=0[/tex]
We can estimate the discriminant, and then, the solutions and we take the largest one.
[tex]\Delta=b^2-4ac=85^2-4*36*50=25=5^2\\\\x_1=\dfrac{-85-5}{2*36}=\dfrac{-18*5}{18*4}=\dfrac{-5}{4}\\\\x_2=\dfrac{-85+5}{2*36}=\dfrac{-80}{72}=\dfrac{-8*10}{8*9}=\boxed{\dfrac{-10}{9}}[/tex]
Thank you
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Identify the type of conic section given by the polar equation below. Also give the equation of its directrix (in rectangular coordinates is fine.)
r = 8/4+ cos θ.
Answer:
x = ±8
Step-by-step explanation:
A conic section with a focus at the origin, a directrix of x = ±p where p is a positive real number and positive eccentricity (e) has a polar equation:
[tex]r=\frac{ep}{1 \pm e*cos\theta}\\ \\[/tex]
From the question, the polar equation of the circle is:
[tex]r=\frac{8}{4+cos\theta}[/tex]
We have to make the equation to be in the form of [tex]r=\frac{ep}{1 \pm e*cos\theta}\\ \\[/tex]. Therefore:
[tex]r=\frac{8}{4+cos\theta}\\\\Multiply \ through\ numerator\ and\ denminator\ by\ \frac{1}{4}\\\\ r=\frac{8*\frac{1}{4} }{(4+cos\theta)*\frac{1}{4} }\\\\r=\frac{2}{4*\frac{1}{4} +cos\theta*\frac{1}{4}}\\ \\r=\frac{\frac{1}{4}*8}{1+\frac{1}{4}cos\theta}[/tex]
This means that the eccentricity (e) = 1/4 and the equation of the directrix is x = ±8
Can someone please explain this to me? I’m really confused on how to find the limit with the piecewise function.
Answer: 2
Step-by-step explanation:
You only need to evaluate at the limit point.
f(x) = 4 - x ; x ≠ 2
Consider the solution if x = 2 (because the limit is x → 2)
f(2) = 4 - (2)
= 2
We know that f(x) = 0 ; x = 2
f(2) = 0
but we are looking for the y- value it approaches - not the y-value it is.
Look at the graph. You will see that as x gets closer and closer to 2, the y-value gets closer and closer to 2. This is the limit.
Complete each equation with a number that makes it true. 8⋅______=40 8+______=40 21÷______=7 21−______=7 21⋅______=7
Answer:
8.5 =40
8+32=40
21÷3=7
21-14=7
21÷7=3
Step-by-step explanation:
The missing values are 5, 32, 3, 14, and 3 after using the arithmetic operation.
What is an arithmetic operation?It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.
It is given that:
8⋅______=40
8+______=40
21÷______=7
21−______=7
21⋅______=7
We can use the arithmetic operation to find the unknown values:
A number is a mathematical entity that can be used to count, measure, or name things. For example, 1, 2, 56 etc. are the numbers.
8x5 = 40
8 + 32 = 40
21 ÷ 3 = 7
21 - 14 = 7
21 ÷ 3 = 7
Thus, the missing values are 5, 32, 3, 14, and 3 after using the arithmetic operation.
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PLEASE HURRY add n to the product of 7 and 5
Answer:
[See Below]
Step-by-step explanation:
Multiply 7 by 5.
*35
Now add n to it.
*35 + n
What is the range of the function f(x) = -|3x + 3|?
Answer:
The range of the function [tex]f(x) = -|3\cdot x+3|[/tex] is every positive real numbers plus zero.
Step-by-step explanation:
According to definition of the absolute value, the range of absolute value covers positive real numbers or zero. A linear function is a continuous function, which means the existence of an image for every element from domain. The negative sign transforms the original range to all negative real numbers plus zero.
Hence, the range of the function [tex]f(x) = -|3\cdot x+3|[/tex] is every positive real numbers plus zero.
Use the coordinate plane to plot the points (6, 0) and (0, 5). Which statement is true? (0, 5) is located on the x-axis. (0, 5) is located at the origin. (6, 0) is located on the x-axis. (6, 0) is located at the origin.
Answer:
(6, 0) is located on the x-axis
Explanation:
For a point to be on the x-axis, its y-value must equal 0. (6, 0) has an x-value of 6 and a y-value of 0.
"(0, 5) is located at the origin" is not true because the origin is at (0, 0).
"(0, 5) is located on the x-axis" is not true because its y-value is 5, not 0.
"(6, 0) is located at the origin" is not true because the origin is at (0, 0).
The (6, 0) is located on the x-axis option (C) is correct because the y-coordinate is zero on the x-axis.
What is an ordered double?It is defined as a representation of coordinates in a two-dimensional coordinate plane. It has a list of two elements in it, such as (x, y).
[tex]\rm Area = |\dfrac{(x_1y_2-y_1x_2)+(x_2y_3-y_2x_3)....+(x_ny_1-y_nx_1)}{2}|[/tex]
It is given that:
The points are (6, 0) and (0, 5).
After plotting on the coordinate plane,
For a point to be on the x-axis, its y-value must equal 0. (6, 0) has an x-value of 6 and a y-value of 0.
"(6, 0) is located at the origin" is not true because the origin is at (0, 0).
Thus, the (6, 0) is located on the x-axis option (C) is correct because the y-coordinate is zero on the x-axis.
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What is the slope of the line in the graph?
Answer:
i believe it is 1
Step-by-step explanation:
Answer:
the slope is 1
Step-by-step explanation:
rise/run
1/1 = 1
What's the answer to this question I need help I don't understand it
Greetings from Brasil...
Making the division
(X⁵ + 2X⁴ - 7X² - 19X + 15) ÷ (X² + 2X + 5)
we get
X³ - 5X + 3Answer:
x³ − 5x + 3
Step-by-step explanation:
To solve with long division:
Start by dividing the highest terms:
x⁵ / x² = x³
This becomes the first term of the quotient. Multiply by the divisor:
x³ (x² + 2x + 5) = x⁵ + 2x⁴ + 5x³
Subtract from the first three terms of dividend:
(x⁵ + 2x⁴ + 0x³) − (x⁵ + 2x⁴ + 5x³) = -5x³
Drop down the next two terms and repeat the process.
To use the "box" method:
Each square in the box is the product of the term at the top of the column and the term at the end of the row. Also, squares diagonal of each other must add up to the term outside the box.
Look at the first diagonal. There is only one square, so that must be x⁵. Knowing this, we can say that x³ must be at the top of the column. We can fill in the rest of the column (2x⁴ and 5x³).
Repeat this process until all squares are filled in.
all the factors of 6
Answer:
1, 2, 3 and 6.
Step-by-step explanation:
Factors of 6 are 1, 2, 3 and 6.
Determine the equation of the tangent line to the given path at the specified value of t. (Enter your answer as a comma-separated list of equations in (x, y, z) coordinates.) (sin(3t), cos(3t), 2t7/2); t=1
Answer:
k(t) = (sin3, cos3, 2) + [(t - 1)(cos3, -3sin3, 7)]
Step-by-step explanation:
For a path r(t), the general equation k(t) of its tangent line at a specified point r(t₀) is given by;
k(t) = r(t₀) + r'(t₀) [t - t₀] -----------------(i)
Where
r'(t) is the first derivative of the path r(t) at a given value of t.
From the question:
r(t) = (sin3t, cos3t, 2[tex]t^{7/2}[/tex]) and t₀ = 1
=> r(1) = (sin3, cos3, 2) at t₀ = 1
Find the first derivative component-wise of r(t) to get r'(t)
∴ r'(t) = (cos3t, -3sin3t, 7[tex]t^{5/2}[/tex])
=>r'(1) = (cos3, -3sin3, 7)
Now, at t₀ = 1, equation (i) becomes;
k(t) = r(1) + [ r'(1) (t-1)] [substitute the necessary values]
k(t) = (sin3, cos3, 2) + [(t - 1)(cos3, -3sin3, 7)]
Please help:
A holiday punch recipe calls for 1,500 mL of fruit punch, 375 mL of pineapple juice, and 1 L of ginger ale. How many liters (L) of punch will this recipe yield if doubled?
Answer:
5.75 L
Step-by-step explanation:
2(1500mL + 375mL + 1L)
=2(1875mL + 1L)
=2(1.875L + 1L)
=2(2.875)
=5.75
The recipe will yield 5.75 liters (L) of punch when doubled.
To find the total volume of punch that the recipe will yield if doubled, we need to add the amounts of each ingredient and then multiply by 2.
Original recipe:
Fruit punch: 1,500 mL
Pineapple juice: 375 mL
Ginger ale: 1,000 mL (since 1 L = 1,000 mL)
Total volume of punch in the original recipe:
= 1,500 mL + 375 mL + 1,000 mL
= 2,875 mL
Now, if we double the recipe, we need to multiply the total volume by 2:
Total volume of punch when doubled = 2×2,875 mL
= 5,750 mL
To convert this to liters (L), we divide by 1,000 since 1 liter is equal to 1,000 mL:
Total volume of punch when doubled = 5,750 mL / 1,000
= 5.75 L
Hence, the recipe will yield 5.75 liters (L) of punch when doubled.
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If (x+12y)/x=19 find (144x^2 +24xy + y^2) /y^2
Answer:
81
Step-by-step explanation:
Given:
(x+12y)/x=19Simplifying:
x+ 12y = 19x 12y=18x x/y = 2/3Finding the value of:
(144x^2 +24xy + y^2) /y^2 = 144 (x/y)^2 + 24 (x/y) + 1 =Substituting x/y with 2/3:
144 (2/3)^2 + 24 (2/3) + 1 = 144 (4/9) + 16 + 1 = 64 + 16 + 1 = 81Answer is 81
HURRY! QUICK! SHOW WORK THANKS Write the simplified polynomials that represent the perimeter and area for the rectangle.
Length: (x-5) ft
Width: (3x-10) ft
Perimeter =
Area =
Answer:
Perimeter = (8x-30)
Area=(X-5)(3x-10)
Step-by-step explanation:
Perimeter equation for solving is this
2(X-5+3x-10)=p
it is length plus width twice which will equal the perimeter
solving this out
2(4x-15)=p
8x-30=p
area equation for solving this is
(x-5)(3x-10)=a
I don’t know how to solve this one out but i hope the setup helps!