3 years ago

Which best describes how to subtract 6.45 from 81.3?

1 answer:

7 0

Answer:

Align the numbers on the decimal point. Place a zero in the hundredths place of 81.3. Subtract from right to left, regrouping as necessary.

Step-by-step explanation:

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Out of 30 students are surveyed 17 have a dog based on these results predict how many of the 300 students in the school have a d

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$From\ proportion:\\
30\ students\ 17\ dogs\\
300\ students\ x\ dogs\\\\Cross\ multiplication\\
30x=300*17\\
30x=5100\ \ \ | divide\ by\ 30\\
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3 years ago

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Can someone explain how to do #3?

dsp73

$\displaysyle (\sqrt 2)^{3}=(2^{\frac{1}{2}})^3=2^{\frac{1}{2} \cdot 3}=2^{\frac{3}{2}}=\sqrt {2^3}=\sqrt 8$

√8 is between 2 and 3, because 2²=4<8, but 3²=9>8. Also, our value is closer to 3 than to 2, so it is more than 2.5 and we have C and D options left.

Among these two numbers we find the one which is closer to √8.

C. 27=√729 ⇒ 2.7=√7.29

D. 28=√784 ⇒ <u>2.8=√7.84</u>

Hence our answer is D) 2.8

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3 years ago

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There are 15 marbles in a bag: 7 are blue, 6 are white, and 2 are green. If one marble is drawn, what is the probability that it

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3 years ago

Which of the following best describes the equation below?

DanielleElmas [232]

Answer:

Step-by-step explanation:

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no solution

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i'll explain it to you

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