Which statements are true for the following expression? 2 · (8 + 7)

Mathematics

1 answer:

lorasvet [3.4K]3 years ago

8 0

What are the statements?

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Janelle wants to learn to play the piano. Her friends recommended two different music schools. Make Music charges $525 for 10 ho

makvit [3.9K]

Answer:

Piano Play has the better deal

Step-by-step explanation:

Piano Play has the better deal because it has a lower unit rate

Make Music’s unit rate is 52.5 when you divide $525 by 10 hours

Piano Play’s unit rate is $45 when you divide $540 by 12 hours

3 0

3 years ago

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Drag the values to order them from least to greatest, with the least at the top.

GuDViN [60]

$\bf 4\pi \qquad \approx \qquad 12.57 \\\\[-0.35em] ~\dotfill\\\\ \sqrt{79}+\sqrt{63}\qquad \approx \qquad 8.89 + 7.94\implies 16.83 \\\\[-0.35em] ~\dotfill\\\\ \sqrt{143}\qquad \approx \qquad 11.96 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill \stackrel{11.96}{\sqrt{143}}\qquad \stackrel{12.57}{4\pi }\qquad \stackrel{16.83}{\sqrt{79}+\sqrt{63}}~\hfill$

6 0

2 years ago

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There are 12 chocolates in a box of white,milk and dark chocolates.There are 3whites,4 milk and the rest dark chocolates.What is

Luden [163]

Answer:

5/12=.417

Step-by-step explanation:

12-3-4=5 dark ones

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2 years ago

Let u = <-4, 3>. Find the unit vector in the direction of u, and write your answer in component form. (2 points)

lana66690 [7]

Answer: < -4/5, 3/5>

This is equivalent to writing < -0.8, 0.6 >

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Explanation:

Draw an xy grid and plot the point (-4,3) on it. Draw a segment from the origin to this point. Then draw a vertical line until reaching the x axis. See the diagram below.

We have a right triangle with legs of 4 and 3. The hypotenuse is $\sqrt{4^2+3^2} = \sqrt{16+9} = \sqrt{25} = 5$ through use of the pythagorean theorem.