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ExtremeBDS [4]
3 years ago
7

Casey's sister is 3 times as old as he is. His sister is 21 years old. Let c represent Casey's age. Which of the following would

you use to find Casey's age?
Mathematics
2 answers:
choli [55]3 years ago
8 0

Answer: Casey's sister is 63 years old.

Step-by-step explanation: You can multiply because it has the key word times in it so if u see a word problem with the word times in it then that means u multiply. So, what I did was I put the 21 on top and the 3 at the bottom and multiply three times one three put that at the bottom then 3 times 2 six I put the six at the bottom put the six and the three together and u got sixty-three

algol133 years ago
5 0

Answer:

casey's age is 7

Step-by-step explanation:

if his sister is 3 times as old as he is then she is older therefore you would devide.

21/3=7

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neonofarm [45]

Answer:  The area of Charlene's rhombus is nine times smaller than the area of Jerry's rhombus.

Step-by-step explanation:

I will assume that the exercise says "\frac{1}{3} times the base and height of Jerry’s rhombus".

The area of a rhombus can be calculated with the following formula:

A=b*a

Where "b" is the length of the base  and "a" is the altitude or the height.

Then, you can calculate the area using the formula shown above.

Therefore, you get:

1. Jerry's rhombus:

A_1=(15\ in)(9\ in)\\\\A_1=135\ in^2

2. Charlene's rhombus:

A_2=(\frac{1}{3}*15\ in)(\frac{1}{3}*9\ in)\\\\A_2=(5\ in)(3\ in)\\\\A_2=15\ in^2

Dividing the area calculated, you get:

\frac{135\ in^2}{15\ in^2}=9

Therefore, you can conclude that the area of Charlene's rhombus is nine times smaller than the area of Jerry's rhombus.

7 0
3 years ago
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What is the value of the expression below when z =5 and w=5? 9z-3w
zysi [14]
This is just about substitution!! 9(5)-3(5), 3 • 5 = 15
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Step-by-step explanation:

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Mkey [24]

Answer:

The correct answer is no.

Step-by-step explanation:

If a number is a factor of another number, that means that it can be equally divided into it <em>evenly</em>.

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Since 3 is <em>not</em> a factor of 13, it is also <em>not</em> a factor of 73.

Hope this helps! :D

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2 years ago
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Alex73 [517]

Answer: 532 games

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3 years ago
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