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Gre4nikov [31]
3 years ago
11

Please help, multiple choice

Mathematics
1 answer:
lakkis [162]3 years ago
7 0

Answer:

C) 15

Step-by-step explanation:

This a 45° 45° 90° special right triangle and in this triangle the length of hypotenuse is a√2 while the two side lengths are a

So if the length of hypotenuse is 15√2 the side lengths would be 15 each

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A family is building a circular fountain in the backyard. The yard is rectangular and measures 10x by 15 and the fountain is goi
Ira Lisetskai [31]
The correct question is
A family is building a circular fountain in the backyard. The yard is rectangular and measures 10x by 15x and the fountain is going to be circular with a radius of 4x. Once the fountain is built, what will be the area of the remaining yard?

Step  1
find the area of rectangular yard (A1)
A1=(10*x)*15*x=150*x² units²

Step 2
find the area of the circular <span>fountain (A2)
A2=pi*r</span>²---------> pi*(4x)²=16*pi*x²

Step 3
find <span> the area of the remaining yard (A3)

A3=A1-A2----------> 150*x</span>²-16*pi*x²----> x²*[150-16*pi]----> 2*x²*[75-8*pi]

the answer is the option A) 
<span> 2x</span>²<span> (75-8pi )</span>

3 0
4 years ago
Given k(x)=4x+5, if k(x)=-3 find x
zvonat [6]

Answer:

x=-5/7

Step-by-step explanation:

4 0
3 years ago
Hello, happy Friday, I am just here with some geometry questions.
Genrish500 [490]

Answer:

x=4

Step-by-step explanation:

By the Triangle Proportionality Theorem:

\displaystyle \frac{x}{12}=\frac{x+1}{15}

By cross-multiplication:

\displaystyle 12(x+1)=15(x)

Distribute:

12x+12=15x

Subtract 12x from both sides:

12=3x

Hence:

x=4

5 0
3 years ago
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Answer:

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4 years ago
Math question whoever helps get brainly!! 20 points
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The student does not make an error

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