4 years ago

Please help with these 2!! Thank you

Mathematics

1 answer:

mr_godi [17]4 years ago

7 0

1) the answer is D
2) the answer is A

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What is the simplified form of the following expression 7(3sqrt 2x) - 3(3sqrt 16x) - 3(3sqrt 8x)

zimovet [89]

Answer: $\bold{3\sqrt{2x}-36\sqrt x}$

<u>Step-by-step explanation:</u>

$7(3\sqrt{2x})-3(3\sqrt{16x})-3(3\sqrt{8x})\\\\=21\sqrt{2x}-9\sqrt{16x}-9\sqrt{8x}\\\\=21\sqrt{2x}-9\cdot 4\sqrt x-9\cdot 2\sqrt{2x}\\\\=21\sqrt{2x}-36\sqrt x-18\sqrt{2x}\\\\=(21-18)\sqrt{2x}-36\sqrt x\\\\=3\sqrt{2x}-36\sqrt x$

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3 years ago

I have no idea how to solve this. I have to teach myself this and I’m stuck. How do I find x?

Valentin [98]

Since the topic is similar right triangles you need to think of the Pythagorean triples, for this problem use the 3-4-5 triplet ratio

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4 years ago

Explain how to rewrite the equation -2x - 6y = 18 in slope-intercept form.

MrMuchimi

Answer:

y = -1/3x -3

Step-by-step explanation:

-2x - 6y = 18

We want to solve for y since the slope intercept form is y =mx+b where m is the slope and b is the y intercept

Add 2x to each side

-2x-6y +2x = 2x+18

-6y = 2x+18

Divide each side by -6

-6y/-6 = 2x/-6 + 18/-6

y = -1/3x -3

This is in slope intercept form with the slope -1/3 and the y intercept -3

4 0

4 years ago

Read 2 more answers

How many 4 3 cup servings are in 28 3 cups of cereal

galina1969 [7]

<span>The answer is going to be 14 </span>

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3 years ago

X + 3y = 12 2 x - 4 y = 4solve by graphing.

zloy xaker [14]

$\begin{gathered} x+3y=12 \\ 2x-4y=4 \end{gathered}$ $\begin{gathered} x=12-3y \\ \\ 2(12-3y)-4y=4 \\ 24-6y-4y=4 \\ 24-10y=4 \\ -10y=-20 \\ y=2 \\ \\ x=12-3(2) \\ x=12-6 \\ x=6 \end{gathered}$

By graphing

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1 year ago