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Westkost [7]
3 years ago
13

The assembly room has 6 rows with 30 chair in each row. If third grader fill 3 rows, how many third grader are in the room?

Mathematics
2 answers:
mr Goodwill [35]3 years ago
7 0
30 x 3 = 90 their are 90 3rd graders in the room
Anuta_ua [19.1K]3 years ago
7 0
30/6=5 chairs each row
5x3=15 chairs. Meaning that there are 15 third graders in the room.
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What the prime factorization on 75?<br><br>​
nikklg [1K]

Answer:

3*5^2

Step-by-step explanation:

75 is divisible by 3

75/3 = 25

25 is not divisible by 3, but it is divisible by 5.

25 = 5^2.

25/25 = 1. We are done.

3 0
3 years ago
A 2,000-foot-long fence will be used to enclose a rectangular field that is three times as long as it is wide. What is the lengt
BartSMP [9]
I think it's another trick question and the answer is 2000.
4 0
2 years ago
Cylinder A has radius r, height h, and a volume of 10pi cubic units. Cylinder B has twice the radius and twice the height.
viva [34]

Answer:

Step-by-step explanation:

10 = r²h

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4 0
3 years ago
Read 2 more answers
phyllis invested 66000 dollars, a portion earning simple interest rate of 5% per year and the rest earning a rate of 7% per year
Lelechka [254]

<u>Answer: </u>

Physliis invested 32000 dollar at 5% interest rate and 34000 dollar at 7% interest rate.

<u>Solution:</u>

Let Phyllis invest ‘x’ dollar at 5% per year and (66000-x) dollar at 7% per year.

We know,

\text { Simple interest }=\frac{\text {Principal} \times r a t e \times T i m e}{100}

In the question it is given that Simple interest earned from both the investments at the end of the year is $3980.

Using the given below equation, we will try to find out the investments at each rate.

\begin{array}{l}{\frac{x \times 5 \times 1}{100}+\frac{(66000-x) \times 7 \times 1}{100}=3980} \\\\ {\frac{5 x}{100}+\frac{462000-7 x}{100}=3980} \\\\ {\frac{5 x+462000-7 x}{100}=3980} \\\\ {-2 \mathrm{x}+462000=3980 \times 100} \\\\ {-2 \mathrm{x}=398000-462000} \\\\ {-2 \mathrm{x}=-64000} \\\\ {\mathrm{x}=\frac{-64000}{-2}}\end{array}

x = 32000

We can calculate amount for 7% interest rate by,

(66000-32000) =34000

Thus Phyllis invested 32000 dollar at 5% interest rate and 34000 dollar at 7% interest rate.

8 0
3 years ago
This is the last one I need help with sorry I didn't make this into one post.
marusya05 [52]

Hi There!

Answer:

A.)$15.96

Step-by-step explanation:

3 1/3 * 2.99 = 9.96666666667

1 1/2 * 3.99 = 5.985

9.9666666666 + 5.985 = 15.9516666667 = $15.96

Hope This Helps :)

5 0
2 years ago
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