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3 years ago

9

A third grade teacher has 20 students in her class. Fifteen of the students are girls and five are boys. What is the ratio of gi

rls to boys in the third grade class?

1 answer:

svetoff [14.1K]3 years ago

8 0

Answer:

15 : 5 = 3 : 1

Step-by-step explanation:

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Jay has an album that holds 600 coins. Each page of the album holds 6 coins. If 39% of the album is empty, how many pages are

Nutka1998 [239]

9514 1404 393

Answer:

61

Step-by-step explanation:

If there are 6 coins on each page, then the number of pages for 600 coins is ...

(600 coins)/(6 coins/page) = 100 pages

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If 39% are empty, then 100% -39% = 61% are filled.

The number of filled pages is ...

61% × 100 = 61/100 × 100 = 61 . . . . pages filled

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<em>Comment about percent</em>

You can think of the percent symbol (%) and "per 100" (/100) as being interchangeable. 61% = 61/100

("Cent" is used to signify one of 100 parts. A cent is 1/100 of a dollar, for example. In land area, a cent is 1/100 of an acre. Then, "percent" can be thought of as "per cent" or "per 100 parts".)

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2 years ago

What is the estimated sum of 6/7+4/7<br> A.1/2<br><br> B.1<br><br> C.1 1/2<br><br> D.2

kvv77 [185]

Answer:

1 1/2

Step-by-step explanation:

its 100% correct.

3 0

3 years ago

What is the range of the function y=3 Sqrt x+8

ValentinkaMS [17]

Answer:

$(-\infty,+\infty)$

Step-by-step explanation:

The given function is

$y=\sqrt[3]{x+8}$

The range refers to the values of y for which x is defined.

We solve for x to obtain;

$y^3=x+8$

$x=y^3-8$

This is a polynomial function in y.

x is defined for all values of y.

Therefore the range is all real numbers.

or

$(-\infty,+\infty)$

The first choice is correct.

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Starting salaries of 90 college graduates who have taken a statistics course have a mean of $43,993 and a standard deviation of

Rufina [12.5K]

Answer: attached below

Step-by-step explanation:

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3 years ago

In the equation Ax + By = C, A and B

Rudik [331]

Answer:

0(x) + BY=c

0 + By = c

By = c

divide both sides by BY

BY/by = c/By

= c/by

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3 years ago