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DochEvi [55]
3 years ago
10

Samuel has a collection of toy cars. His favorites are the 27 red ones, which make up 90% of his collection. How many toy cars d

oes Samuel have?
Mathematics
2 answers:
Damm [24]3 years ago
5 0

Answer:

30

Step-by-step explanation:

natulia [17]3 years ago
5 0

Answer: 30

Step-by-step explanation:

If 27 is 90%, then 27/x=9/10. Cross multiply to get 270=9x. Divide by 9 to get 30

(I put the wrong answer the first time, my bad sorry)

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Find f (2b^2) for (x)=x^2-4x
BlackZzzverrR [31]

Answer:

A

Step-by-step explanation:

We are given the function:

f(x) = x^2 - 4x

And we want to find:

\displaystyle f(2b^2)

Substitute:

\displaystyle f(2b^2) =(2b^2)^2 -4(2b^2)

And evaluate:

\displaystyle \begin{aligned}  f(2b^2) &=(2b^2)^2 -4(2b^2) \\ &=(4b^4) +(-8b^2) \\ &= 4b^4 - 8b^2 \end{aligned}

In conclusion, our answer is A.

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3 years ago
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i d k

Step-by-step explanation:

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3 years ago
The ratio of red balloons to blue balloons at a party is 4 to 9. If there are 20 red balloons, how many blue balloons are there?
STALIN [3.7K]

Answer:

Step-by-step explanation:

4/9 to 20/x

cross multiply and divide to get your answer

4     20

9     x

4x=180

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5 0
3 years ago
What is the distance from point A to point D on the number line?
mrs_skeptik [129]
The answer would be 3.5
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