3 years ago

I NEED AN ANSWER ASAP!!

Mathematics

1 answer:

ElenaW [278]3 years ago

8 0

On question 7 the answer is 9x+5y+12 for question 8. The answer is7x+1 and 9. Is 12xsquared +14x and 10 is 15

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2. The cost that a carpet cleaning company charges is directly proportional to the number of rooms cleaned. The cost is $22 for

klio [65]

Answer:

Step-by-step explanation:

to determine cost u need to have a equation to show cost per room.and total cost of rooms

6 0

3 years ago

Prove the polynomial identity.

Kaylis [27]

Answer:

Proven

Step-by-step explanation:

We prove the polynomial with factorization. We must first simplify the expression before we can factorize:

$(4\cdot{x^2}-2)\cdot{(4\cdot{x^2}-2)}-16\cdot{x^4}$

$16\cdot{x^4}-8\cdot{x^2}-8\cdot{x^2}+4-16\cdot{x^4}$

$4-16\cdot{x^2}$

4 is the common number and we can take it out of the expression:

$4\cdot{(1-4\cdot{x^2})}$

We can factorize further with the x term being zero. For this to be true we must have -2x and 2x to cancel out and therefore the expression is proven:

$4\cdot{(1-2\cdot{x})}\cdot{(1+2\cdot{x})}$

5 0

3 years ago

Please help me out!!!

MrRa [10]

Answer:

720cm³

Step-by-step explanation:

6cmx8cm = 48cm

15cmx48cm = 720cm³

8 0

3 years ago

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Write the equation of the line in fully simplified slope-intercept form.

dangina [55]

Answer:

y = 5x - 2

Step-by-step explanation:

y = mx+b

7 0

3 years ago

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Wilbur landed his plane. The plane's elevation relative to the ground (In meters) as a function of time (in seconds) is graphed.

bogdanovich [222]

Let's find the slope of this line.

slope=change in y/change in x

slope=8500-8000/0-100=500/-100=-5

So that means the plane is falling 5 meters per second.

So, the place will fall 50 meters in 10 seconds.

answer: B

7 0

3 years ago

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