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3 years ago

9

What is the volume of a sphere with a radius of 6 mm?

1 answer:

DanielleElmas [232]3 years ago

4 0

Maybe 6 but I’m not sure.

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Roberto tool a test that contained 25 questions. He received an 88% on the test. how many questions did he answer correctly?

iren [92.7K]

He got 22/25 questions right because

if you put X as the number of questions he got right out of 25 and equal it to 88 out of 100 you can cross multiply to get X

x/25=88/100
100x=25×88

25×88=2200
100x=2200

divide 100 on both sides
therefore
2200/100= 22

hope this helps

8 0

3 years ago

Read 2 more answers

Mr. Roboto has bought a can of paint can you use 3/8 of it to paint a bookshelf in use 1/4 of its pink leg and he used some of i

NNADVOKAT [17]

Answer: Fraction of paint used for bird house = $\dfrac14$

Step-by-step explanation:

Let quantity of the total paint be 1.

Given: Fraction of paint to book shelf = $\dfrac38$

Fraction of Paint to leg = $\dfrac14$

Fraction of Paint left = $\dfrac18$

Let x= fraction of paint used for bird house.

Total paint = $\dfrac38 +\dfrac 14+\dfrac18+x=1$

$\Rightarrow\ \dfrac{3+2+1}{8}+x=1\\\\\Rightarrow\ \dfrac{6}{8}+x=1\\\\\Rightarrow\ x=1-\dfrac68\\\\\Rightarrow\ x=\dfrac{2}{8}=\dfrac14$

So, Fraction of paint used for bird house = $\dfrac14$

7 0

3 years ago

How do I simplify this expression 3-(7a+1)

faust18 [17]

2-7a is your answer

4 0

4 years ago

How can i solve this<br> f:d->R<br> f(x)=x at power2/x-1

Leto [7]

X - 1 is not null => x is not 1 => D = R - {1};

4 0

3 years ago

Round it to 1 significant figure

balu736 [363]

Answer:

2 ( one significant figure)

Step-by-step explanation:

798/8 x 41 in order to express it in 1 significant figure

we will multiply the denominator and then divide both the numerator and denominator.

so,

798/328

798/328

2.453

now to one significant figure it will be 2

3 0

4 years ago