3 years ago

Use the net as an aid

Mathematics

1 answer:

miss Akunina [59]3 years ago

3 0

Answer:

Step-by-step explanation:

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If Andrea makes $10 per hour and Cassidy makes eight dollars per hour how much more by percent does Andrea make than Cassidy per

Alexus [3.1K]

Hey there!

Andrea makes 20% more than Cassidy.

Work:

10 x 0.20 = 2

10 - 2 = 8

So that proves it is 20%.

Hope this helps!

5 0

3 years ago

Solve using the quadratic formula. Show all work. Write each solution in simplest form. No decimals.

alexira [117]

Answer:

Option B

Step-by-step explanation:

Given quadratic equation is,

12a² + 9a + 7 = 0

By comparing this equation with standard quadratic equation,

hx² + kx + c = 0

h = 12, k = 9 and c = 7

By using quadratic formula,

a = $\frac{-k\pm\sqrt{k^2-4hc}}{2h}$

= $\frac{-9\pm\sqrt{9^2-4(12)(7)}}{2(12)}$

= $\frac{-9\pm\sqrt{81-336}}{2(12)}$

= $\frac{-9\pm\sqrt{-255}}{24}$

= $\frac{-9\pm i\sqrt{255}}{24}$

a = $\frac{-9+ i\sqrt{255}}{24},\frac{-9- i\sqrt{255}}{24}$

Therefore, Option B will be the correct option.

3 0

3 years ago

What are the solutions to x2 - 2x -8=0?

pav-90 [236]

The answer is 2
Add like terms
Add 8 to -8 and the zero
To get 4x=8
Then divide 4 and 8 by 4
To get x=2

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3 years ago

Solve the formula for t.<br> d = rt<br> Pls help easy branliest if right

Kay [80]

Answer:

t=d/r

Explanation:

Dived both sides by r

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jeyben [28]

Answer:

Step-by-step explanation:

-2 is greater than -3

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