2 years ago

Y=2x-7 y=3x can someone help solve for x and y

1 answer:

4 0

Put 3x in for y, so the equation will be 3x=2x-7. Then solve. once you find “x”, plug it back into one of the original equations. And then you have x and y

You might be interested in

a school custodian walks gymnasium floors measured 20 feet by 20 feet how many square feet did she have to work

Verizon [17]

Hi there.

Area = <em>lw</em>

So, since we have the dimensions, we can just use the formula.

20 · 20 = 400 ft²

Cheers~

4 0

4 years ago

Read 2 more answers

g and Consider the following. f(x) = 4x2 + 5x − 18 (a) Find the instantaneous rate of change of the function at the value x = −4

Oduvanchick [21]

Answer:

a) $\frac{dy}{dx} = -27$ , b) $m = -27$

Step-by-step explanation:

a) The instantaneous rate of change is:

$\frac{dy}{dx} = 8\cdot x + 5$

$\frac{dy}{dx} = 8\cdot (-4)+5$

$\frac{dy}{dx} = -27$

b) The slope of the tangent line is equal to the instantaneous rate of change found previously.

$m = -27$

5 0

3 years ago

Please help me!

Shalnov [3]

Answer:

The answer is 8.8.

Step-by-step explanation:

99 ÷ 12 = 8.8

8.8

12⟌99.0 <----put this zero

- 90

- 90 <------- here

Hope this helps! I did the best I could. :)

8 0

3 years ago

Find the quotient of the following: f(x)=2x-5, g(x) 1-x

AfilCa [17]

What are the answer choices

6 0

2 years ago

The original price was $60 and the new sales price is $45. What is the percent discount?

cestrela7 [59]

Answer: 25%

Step-by-step explanation:

$\frac{60}{45}=\frac{100}{x}$

$x=\frac{45*100}{60} \\x=75$

Subtract 75% from 100%

100-75=25%

5 0

3 years ago

Read 2 more answers