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4 years ago

How do you answer this two questions step by step

Mathematics

1 answer:

Mariulka [41]4 years ago

8 0

4.

(3^2) + b^2= (Sqrt10)^2
9+b^2=10
9-9+b^2=10-9
b^2=1
b= sqrt 1= 1

5.

(Sqrt 17)^2=4^2 + b^2
17=16+b^2
17-16=16-16+b^2
1=b^2
b= sqrt 1= 1

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3 years ago

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3 years ago

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3 years ago

The driveway in front of the brown house is 35 feet long and the driveway in front of the red house is 7 yards, 9 feet long. Whi

harkovskaia [24]

Answer:

The first house has the longest driveway by 5 feet

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1) You must change the 7 yards and 9 ft to just feet. We can do this by measuring the conversion. 1 yard = 3 feet.

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3 years ago

Please help me. I didn't get it

Georgia [21]

$\frac{3}{10}$ + $\frac{2}{5}$

Multiply the $\frac{2}{5}$ by 2 on both sides to get a common denominator of 10. You should end up with $\frac{4}{10}$ .

$\frac{3}{10}$ + $\frac{4}{10}$ = $\frac{7}{10}$

Get a common denominator between $\frac{7}{10}$ and $\frac{5}{15}$ to compare them -- a common denominator is 30. Multiply the $\frac{7}{10}$ by 3, and $\frac{5}{15}$ by 2.

$\frac{21}{30}$ and $\frac{10}{30}$
The $\frac{7}{10}$ is obviously much larger than $\frac{5}{15}$ .

Now look at the answers. Which are true?

B and E are easily seen as true, because we know that the total of $\frac{5}{15}$ is not reasonable/right.

The 2 statements that are true are (B) and (E).

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3 years ago