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anzhelika [568]
3 years ago
6

A little Challenge.

Mathematics
1 answer:
zubka84 [21]3 years ago
6 0

Step-by-step explanation:

the total area of circles =

(2 × π × 1²) + (3 × π × 0.5²)

= (2π) + ( 3× 0.25×π)

= 2π + 0.75π

= 2.75π

assume π=3.14

so, the total area =

2.75 × 3.14 = 8.635

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When the sun is at 31 above the horizon, a tree casts a 42 ft. shadow. how tall is the tree?
Fantom [35]
Answer: 25.2361459992ft

This question can be solved by a trigonometric equation. Shadow formed when something with height like a tree, so it can be pictured as a vertical line. Shadow is a length of and can be pictured as a horizontal line.  
In trigonometric, to find the vertical line length with horizontal line you need tan function. The sun angle will be used in the function, so the calculation would be: tan(31) x 42ft = 25.2361459992ft

5 0
3 years ago
Solve the systems of equations through elimination, show work<br> 3+2x-y=0<br> -3-7y=10x
Wittaler [7]

Answer: x=-1 y=1

Step-by-step explanation:

solve y in 3+2x-y=0

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solve x in -14x-24=10x

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sub x= -1 into y =3+2x

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7 0
2 years ago
How to factor out 7x^6
Nataly_w [17]

Answer:

42

Step-by-step explanation:

so you do 7 times 6 and you should get 42

8 0
3 years ago
A rabbit travels 3/4 miles in 7/8 of an hour. whats the rabbits unit rate?
Mnenie [13.5K]

Answer:

= 0.857143 miles per hour

Step-by-step explanation:

This the fractions 3/4 miles and 7/8 hours are equal to

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We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 0.875

<u>0.75 miles</u> ÷ 0.875

0.875 hours ÷ 0.875

=

<u>0.857143 miles</u>

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= 0.857143 miles per hour

5 0
2 years ago
Read 2 more answers
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Kay [80]

The answer is 22.5!!!XD


I got this answer by multiplying 0.15 times 150 and I got 22.5


Hope this helped!!!XD

8 0
3 years ago
Read 2 more answers
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