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2 years ago

Scott reads 63 chapters of a book in 7 hours. What is his rate in chapters per hour?

Mathematics

2 answers:

larisa86 [58]2 years ago

6 0

Answer: Scott reads 9 chapters per hour.

Step-by-step explanation:

63/7 = 9

creativ13 [48]2 years ago

3 0

Answer:

Step-by-step explanation: 9,You would divid 63 because that the amount of total chapters read by 7 which is the amount of time used which is 9 chapters/hour.

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A shelter kept track of the number of dogs adopted each day for three weeks. Use the table to find the statistical measures.

maria [59]

Answer:

Mean: 6.29

Median: 7

Mode: 8

Range: 6

Step-by-step explanation:

I just took the quiz

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2 years ago

Please help me If 180°<α<270°, cos⁡ α=−8/17, what is sin -α?

rewona [7]

Starting from the fundamental trigonometric equation, we have

$\cos^2(\alpha)+\sin^2(\alpha)=1 \iff \sin(\alpha)=\pm\sqrt{1-\cos^2(\alpha)}$

Since $180$ , we know that the angle lies in the third quadrant, where both sine and cosine are negative. So, in this specific case, we have

$\sin(\alpha)=-\sqrt{1-\cos^2(\alpha)}$

Plugging the numbers, we have

$\sin(\alpha)=-\sqrt{1-\dfrac{64}{289}}=-\sqrt{\dfrac{225}{289}}=-\dfrac{15}{17}$

Now, just recall that

$\sin(-\alpha)=-\sin(\alpha)$

to deduce

$\sin(-\alpha)=-\sin(\alpha)=-\left(-\dfrac{15}{17}\right)=\dfrac{15}{17}$

6 0

2 years ago

Read 2 more answers

I’ll give brainiest

ElenaW [278]

Answer:

8.33333cm

Step-by-step explanation:

Using the formula

A=wl

Solving forw

w=A/L

=125/15

≈8.33333cm

8.3cm to the nearest tenth

correct so pls mark brainliest

7 0

1 year ago

Please help fast! I will give brainliest to first correct answer!

Mamont248 [21]

Look at the attached picture ⤴

Hope it will help u...

7 0

2 years ago

Write an algebraic expression for 15 decreased by twice a number

vichka [17]

An algebraic expression is, obviously, an expression with a variable.

"A number" would represent a variable, which, in this case, we'll use y.

So, 15 decreased by twice x.
15 - y x 2 =

I hope this helped :)

6 0

3 years ago

Read 2 more answers