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JulijaS [17]
3 years ago
15

I WILL GIVE BRAINLEST

Mathematics
2 answers:
mina [271]3 years ago
8 0

Answer:

8.1

Step-by-step explanation:

1) find half base

half base = 8:2 = 4 ft

2) use the Pythagorean theorem to find the height

\sqrt{9^2 - 4^2} = \sqrt{81 - 16} = \sqrt{65} = 8.1

Eddi Din [679]3 years ago
5 0

Answer:

wow

Step-by-step explanation:

hi, hows ur day??

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A lot is 21 ft by 30 ft. To support a fence, an architect wants an upright post at each corner and an upright post every 3 ft in
Bogdan [553]
What we know:
Lot= 21 x 30ft
Perimeter=2l+2w
Want to put 4 corner post and one post every 3 ft

What we need to find:
How many post we need.

Perimeter=2 (21)+2 (30)=42+60=102ft

102/3=34

34 posts are needed.
6 0
3 years ago
Amy and John shared 150 peaches. (1/3) of what Amy has equals to (1/2) of what John has. How many does Amy have? How many does J
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If my math is correct amy has 90 and john has 60
8 0
4 years ago
Read 2 more answers
How do you turn .33333333 into a fraction
Firlakuza [10]
3/1 i think
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7 0
3 years ago
Find the surface area of the pyramid shown to the nearest whole number.
Snezhnost [94]

Answer:

<h3>The answer is option A</h3>

Step-by-step explanation:

Surface area of a pyramid =

area of base + area of triangular faces

Since it's a square based pyramid

It's surface area is

area of base + 4( area of one triangular face)

Since the square has equal sides

<u>For square base </u>

Area of a square = l²

where l is the length

From the question l = 5

So we have

Area of square base = 5² = 25ft²

<u>For one of the triangular face</u>

Area of a triangle = ½ × base × height

base = 5

height = 6

Area = ½ × 5 × 6 = 15ft²

So the surface area of the pyramid is

25 + 4(15)

= 25 + 60

We have the final answer as

<h3>Surface area = 85 ft²</h3>

Hope this helps you

7 0
3 years ago
Can somebody pls show me how to solve this?
fomenos

Answer:

C. 52.5

Step-by-step explanation:

The total from W(-20) to Z(120) is 140.

You can add up all of the numbers in the ratio, 2:3:3, to get 8

Divide 140 by 8 to get 17.5

Multiply 17.5 times the number in the ratio for each segment, so the new ratio would be 35 : 52.5 : 52.5

Since you are trying to find segment XY, which was the 2nd number in the ratio, you would get your answer as 52.5

8 0
3 years ago
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