2 years ago

What is the answer to this question

Mathematics

1 answer:

Jlenok [28]2 years ago

5 0

A is false in this question.

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4a^2 - 7b + 2ab - a^2 + b

Andrej [43]

Answer:

3a^2 - 6b + 2ab

Step-by-step explanation:

Put all the like terms together

(4a^2 - a^2) - (7b + b) + 2ab

then simplify

(4a^2 - a^2) = 3a^2

(-7b + b) = -6b

then rewrite

3a^2 - 6b + 2ab

3 0

3 years ago

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On the written portion of her driving test, Sara answered 84% of the questions correctly. If Sara answered 42 questions correctl

kotykmax [81]

There is 50 questions hole this helps

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2 years ago

Here is a list of numbers:<br>-16, -10, 10, -12, -11, -18, -12 ,20 ,-20 ,16<br>State the median.

aleksklad [387]

Answer:

i think -14.5

Step-by-step explanation:

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3 years ago

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Rachael is a nurse. She earns 12 vacation days after working 768 hours. How many hours does Rachael need to work to earn 1 vacat

forsale [732]

She needs to work 64 hours to earn 1 vacation day.

You get his by dividing 768 by 12.

If correct brainliest please.

Thank you.

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3 years ago

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What is an equation of the parabola with vertex at the origin and focus (0, 0.75)?

morpeh [17]

Answer:

$x^{2} =3y$

Step-by-step explanation:

Notice that the focus is a points on the vertical axis, that means the parabolla opens vertically, and has the form

$x^{2} =4py$

Because the parameter $p$ is positive and equal to 0.75. Additionally, the vertex is at the origin, that's why the equation is this simple.

Replacing the parameter value, we have

$x^{2} =4(0.75)y\\x^{2} =3y$

Therefore, the equation of a parabolla with vertex at the origin and focus at (0, 0.75) is $x^{2} =3y$ .

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3 years ago