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3 years ago

Solve the system of equations. Show ALL your work. Put your answer in the form of an ordered pair (x, y)

1 answer:

6 0

This should be easy because we just have to use substitution method. Substitute the value of x from the second equation into the x of the first equation.
-4(2y) + 11y = 15
-8y + 11y = 15
3y = 15 ; y = 5
Substitute this value of y to either the first or second equation.
x = 2(5) = 10
The ordered pair is therefore (10,5).

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Chen rode his skateboard 3 3 4 miles in 3 4 of an hour. What was his average speed in miles per hour?

Sati [7]

The answer is 5 .

3 3/4 / 3/4 = 5
Hope this helps

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2 years ago

55. f(x) = x + 2; (1, -3)

Tems11 [23]

Answer:

F(x) = 3

Step-by-step explanation:

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2 years ago

Use the quadratic formula to solve. Round to the nearest tenth if necessary.<br> 2x^2 -3x -7 = 0

abruzzese [7]

The quadratic formula is:

$\frac{-b + \sqrt{b^2 - 4ac} }{2a}$ and $\frac{-b - \sqrt{b^2 - 4ac} }{2a}$

In this case, a = 2, b = -3, and c = -7

So, we can plug in the numbers to get:

$\frac{-(-3) + \sqrt{(-3)^2 - 4(2)(-7)} }{2(2)}$ and $\frac{-(-3) - \sqrt{(-3)^2 - 4(2)(-7)} }{2(2)}$

Simplifying, we get:

$\frac{3 + \sqrt{65} }{4}$ and $\frac{3 - \sqrt{65} }{4}$

You need to use a calculator to find what these would be in decimal form. The answer, rounded to the nearest tenth, is: x = 2.8, x = -1.3

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2 years ago

What is the volume of the right triangular prism? Round to the nearest tenth.

Tatiana [17]

Answer:

613.8 meters cubed

Step-by-step explanation:

6.2x11x9=exactly 613.8 meters cubed

4 0

2 years ago

Read 2 more answers

Austin earns $9.75 an hour at a part-time job, and earns $12 each time mowing lawns in the neighborhood. They graph the amount o

kaheart [24]

Answer:

$7.25 at part-time job

$9.00 every time lawn mowed

so he would get 33.33 day so we will just say 33 times to get 300 dollars if he gets $9 for mowing. And 41.37 hours to get $300 and he would have to use x and y graph to find the boundary line.

Step-by-step explanation:

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2 years ago