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Natasha_Volkova [10]
3 years ago
8

I WILL AWARD BRAINLIEST!!! PLEASE HELP!!! SOLVE EACH!!

Mathematics
1 answer:
Dimas [21]3 years ago
7 0
Using the Pythagorean theorem:

{c}^{2} = {a}^{2} + {b}^{2}

And expressing hypotenuse.

c = \sqrt{ {a}^{2} + {b}^{2} }

Now...

1.

c = \sqrt{ {12}^{2} + {16}^{2} } = 20

2.

c = \sqrt{ {5}^{2} + {12}^{2} } = 13

3.

c = \sqrt{ {15}^{2} + {8}^{2} } =17
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A porch has the shape of a quarter circle. If the porch was a complete circle it would have a diameter of 5 ft. What is the appr
Sladkaya [172]
Normally, to find the area of a circle you'd do π × r^{2} so you have to find the radius by dividing 5 by 2 to get 2.5. Approximating pi as 3.14, you would do 3.14 × 2.5^{2} = 19.625. Because the porch is a quarter circle, you would then divide this by 4 to get 4.906. Rounded to the nearest square foot, your answer would therefore be 5 ft. I hope this helps!
3 0
3 years ago
You are trying to recreate flubber because you are obsessed with that movie and you thought it was the coolest. you take 70% sli
german

Let x be the amount (gal) of the 40% slime solution you end up using. You want to end up with 120 gal of the 50% solution, so that you would use 120-x gal of the 70% solution.

You want the final solution to consist of 50% slime, or 60 gal of slime. Each gal of the 40% solution contributes 0.4 gal of slime, while each gal of the 70% solution contributes 0.7 gal of slime. This means

0.4x+0.7(120-x)=0.5\cdot120=60

\implies0.4x+84-0.7x=60

\implies24=0.3x

\implies x=80

so the answer is B.

8 0
3 years ago
the sum of the digits of a two number is 14 .if 36 is substracted from the number,the places of the digits are reversed.find the
Taya2010 [7]
The number in the ones place= X
The number in the tenths place= y
y+x=14.
y=14-x

Original placement of numbers=10y+x
New placement of numbers(after subtraction of 36)= 10x+y

10y+ x-36=10x+y
Substitute y with 14-x
So we would get

10(14-x)+ x-36=10x+(14-x)
=140-10x+x-36=10x+14-x
After transposing we get
140-14-36=10x-x+10x-x
=90=18x
X=90/18
x=5

Y=14-x
=14-5
=9


So the two digit number is
10y+x
=90+5
=95
5 0
3 years ago
A water tank is 5m tall and has a diameter of 3,5m. Calculate the capacity (volume) of the tank. Use pi=3,14
aleksandr82 [10.1K]

Answer:

<h2>10000000000000</h2>

Step-by-step explanation:

<h2>minions </h2>
5 0
2 years ago
Which value of x is a solution of x &lt; -2?<br> A.<br> -3<br> B. -2<br> C.<br> -1<br> D. 0
Viefleur [7K]

Answer:

A

Step-by-step explanation:

-3<-2

7 0
3 years ago
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