PLEASE ANSWER THIS QUESTION

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Answer 1

Answer:

Answer: 31 is No 35 is Yes 28 is No 36 is Yes

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Pls help I will give out points and make u the Brainly
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What is the answer to 3(x^2-8x-7)

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3x^2-24x-21 would be your answer

3x x +3 x 2 + 3 x 8x + 3 x 7 ( x is a termen)

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(1.4) B
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Answer:

there you go but im not sure . hope its helpful and good luck ;)

Olve the system of equations below.3x+4y=10
6x-2y=40

(6,-2)

(2,6)

(2,-6)

(-2,-6)

Answers

Answer:

The correct solutions are (6, -2).

Step-by-step explanation:

For the first equation, rearrange to make x the subject.

3x + 4y = 10

$3x = 10 -4y$

Divide the whole equation by 3 to isolate x:

$3x = 10 -4y\n3x / 3 = (10)/(3) - (4)/(3)y\nx = (10)/(3) - (4)/(3)y\n$

Now substitute this into the second equation:

$6x - 2y = 40\n6((10)/(3) - (4)/(3)y) - 2y = 40\n6((10)/(3)) + 6((4)/(3)) - 2y = 40$

$20 - 8y - 2y = 40\n20 - 10y = 40$

Subtract 20 from both sides:

20 - 10y = 40

20 - 10y - 20 = 40 - 20

-10y = 20

Divide both sides by 2:

-10y ÷ 10 = 20 ÷ 10

-y = 2 ∴ y = -2

Plug this value back into the first equation:

3x + 4y = 10

3x + 4(-2) = 10

3x + (-8) = 10

3x - 8 = 10

Add 8 to both sides:

3x - 8 + 8 = 10 + 8

3x = 18

Divide both sides by 3:

3x ÷ 3 = 18 ÷ 3

x = 6

Therefore, the correct solutions are (6, -2).

Hope this helps!

APEX. I’ll make you the brainliest . I need this ASAP :(Part 2: Use the formula you selected in part 1 to find the area of a circle with diameter 8 feet. Show your work and round your answer to the nearest hundredth. (2 points)
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Part 3: Use the formula you selected in Part 1 to find the area of a circle with diameter 10 feet. Show your work and round your answer to the nearest hundredth. (2 points)
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Part 4: Find the difference of your answers from part 2 and 3 to find the difference in the areas. Show your work and round your answer to the nearest hundredth. (1 point)

Answers

Answer:

Part 1= Pi * R Squared

Part 2: 50.27

Part 3: 78.54

Part 4: 28.27

Step-by-step explanation:

Part 1: Memorize the formula

Part 2: 8 feet diameter = Pi * 4 squared. 8 feet is the diameter so the radius is 4. 4 squared is 16. 16 * pi = approximately 50.27, but is 50.24 if 3.14 is used as pi.

Part 3: Pi * 5 squared since 10 is diameter. 25 * pi which is close to 78.54, but is 78.5 is 3.14 is used for pi.

Part 4: I subtracted Part 3 from Part 2.

Can someone pls help me pls