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Bess [88]
3 years ago
6

What is the result when the number 39 is decreased by 29%?

Mathematics
2 answers:
romanna [79]3 years ago
7 0

Answer:

27.69

Step-by-step explanation:

emmasim [6.3K]3 years ago
4 0

Answer:

27.69

Step-by-step explanation:

Decreasing 39 by 29 percent is 71 percent of 39.

39 x .71 = 27.69

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The perimeter of a triangle is 510 feet and the sides are in the ratio of 11:16:24. Find the area of the triangle
Nutka1998 [239]

If the sides are in the ratio of 11:16:24, it means that they are all multiples of a same number x, according to these factors.

So, the shorter side is 11x feet long, the middle one is 16x feet long, and the longest side is 24x feet long.

This means that the perimeter is

11x+16x+24x = 51x feet long. But we know that this is 510 feet, so we have

51x = 510 \implies x = \cfrac{510}{51} = 10.

So, the three sides are 110, 160 and 240 feet long.

To find the area of a triangle knowing its three sides, you can use Heron's formula, which states that, if s is half the perimeter of the triangle whose sides are a,b,c, the area A is given by

A = \sqrt{s(s-a)(s-b)(s-c)}

In our case, s = 255, a = 110, b = 160, c = 240 so the formula becomes

A = \sqrt{255(255-110)(255-160)(255-240)} = \sqrt{255(145)(95)(15)} = \sqrt{52689375} \approx 7258.74

5 0
3 years ago
Can someone pleaseeee help and if you’re correct I’ll give u brainlist!
Deffense [45]

Answer:

i would say no

Step-by-step explanation:

i would say no because quadrilateral FGIH is equal to 120 and quadrilateral SRTQ is equal to 134 and also their areas are indifferent FGIH's being 875 and SRTQ's being 1120

please let me know if this was wrong

hope this helps :) have a nice day !!

3 0
2 years ago
A self storage center is a storage room that is 8 feet long, 6 feet wide, and 10 feet high. What is the volume of the room?
KonstantinChe [14]
The formula for volume is width * height * length or w*h*l. to do this problem you have to do 8*6*10 which is 480. so, the volume of the room is 480 ft^3 (cubed).
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(4,4) are the coordinates of C prime
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Evgesh-ka [11]
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