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4 years ago

I neeeeed help thankyou

Mathematics

1 answer:

Helen [10]4 years ago

7 0

Answer:

what one

Step-by-step explanation:

if it is the left one it is -7(2x)+-7(7)+10x=-4x

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If a(x)=5x^2+7x+4 and b(x)=4x^2+3x+2 Then 4a(x) + 2b(x) =

katovenus [111]

Answer:

$28x^2+34x+20$

Step-by-step explanation:

figure out 4a(x) and 2b(x) separately by distributing, and then add them together to get your answer.

hope this helps :)

5 0

2 years ago

Two fifths of a number is 24. what is the number?

vredina [299]

Answer:

Step-by-step explanation:

half of 2/5 is 1/5 so half of 24 is 12.

since 12 is 1/5 of the number multiply 12 by 5 and you get 60.

4 0

4 years ago

Read 2 more answers

Which direction would the graph of y=|x+4|+3 open

shutvik [7]

It would open upwards

4 0

4 years ago

5x+8=9x+12 helpppppp

Marina CMI [18]

Hi there! :)

Answer:

$\boxed{X=-1}$

*THE ANSWER MUST HAVE A NEGATIVE SIGN!*

Step-by-step explanation:

First, you subtract by 8 from both sides of an equation.

5x+8-8=9x+12-8

Subtract.

12-8=4

5x=9x+4

Then, you subtract by 9x from both sides of an equation.

5x-9x=9x+4-9x

Simplify by equation.

-4x=-4

Divide by -4 from both sides of an equation.

-4x/-4=-4/-4

Divide by the numbers from left/right.

-4/-4=-1

$\boxed{X=-1}$ , is the FINAL/CORRECT ANSWER! :)

Have a nice day! :)

:D

-Charlie

Thank you!

4 0

3 years ago

Write the equation of the circle that has a diameter with endpoints (3,7) and (3, 1)

lina2011 [118]

Answer:

(x - 3)^2 + (y - 4)^2 = 3^2

Step-by-step explanation:

Notice that both endpoints are on the vertical line x = 3. Thus, to determine the diameter of this circle, we need only subtract 1 from 7, obtaining 6. The diameter is 6, so the radius is 3.

The center is on the vertical line x = 3 and is halfway between the endpoints of the diameter, that is, at y = 4. (3, 4) describes this point.

Then we insert the known quantities into the general equation for a circle with center at (h, k) and radius r: 3 for h, 4 for k and 3 for r:

(x - 3)^2 + (y - 4)^2 = 3^2 is the desired equation.

7 0

3 years ago