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Nat2105 [25]
3 years ago
7

A boy 1.5 m tall can just see the sun over a wall 71.5 m high which is

Mathematics
1 answer:
igomit [66]3 years ago
5 0

Answer:

C. 45 degree angle

Step-by-step explanation:

let AB be the height of the wall and CD be the height of boy

with BC as distance between them.

we have AE = AB-BE = 3.64-1.54 = 2.1m

and ED = BC = 2.1m

in triangle AED, we have

tanФ = P/B = 2.1/2.1

tanФ = 1

∴ Ф = 45°

Hence the sun is elevated at an angle of 45 °.

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A supplier sells 214 2 1 4 pounds of mulch for every 113 1 1 3 pounds of gravel. The supplier sells 172 pounds of mulch and grav
Dennis_Churaev [7]

Answer:

2.25 + 1 1/3=3.5833333 combined number of pounds of mulch and gravel sold.

2.25/3.583333 X 172=108 pounds of mulch that the supplier sells

(1 1/3) / 3.583333 X 172=64 pounds of gravel that the supplier sells.

Step-by-step explanation:

Let 'x' = pounds of gravel        The ratio of mulch to gravel is given  2 1/4  /  1 1/3   Which equals  9/4  /  4/3     =   27/16

So the total gravel and much is equal to   x + 27/16x = 172  

Solving for 'x'

43/16 x = 172    

x = 172 (16/43) = 64 pounds of gravel  Mulch = 27/16x = 64 (27/16)= 108 pounds

3 0
4 years ago
If an angle of 11pi/30 radian is in standard position. What is the reference angle in radian?
bixtya [17]

Answer:

\frac{11\pi}{30}

Step-by-step explanation:

The reference angle is an acute angle that angle in standard position makes with the positive x-axis.

The given angle in radians is

\frac{11\pi}{30}

This angle is already acute and hence it is itself a reference angle.

The reference angle of any angle in the first quadrant is the same angle.

4 0
3 years ago
Help plz!!!!!!!!!!!!!!
olga nikolaevna [1]
2 5/16 divided 7/8

Simplify
(37/16) / (7/8)

When dividing by a fraction flip over the fraction and multiply
(37/16) * (8/7)

Multiply numerators, multiply denominators
296 / 112

Reduce the fraction
37/14

=2 9/14 <------------- answer
3 0
3 years ago
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netineya [11]
1 quarter= .25
200 × .25= 50

1 dime= .10
.10×15= 15

1 penny= .01
.01× 300= 3

Answer: 50+15+3= $68
5 0
3 years ago
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Slove All questions please 55 points is all I have
Serga [27]

Answer:

My name is lil uzi vert

Step-by-step explanation:

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3 years ago
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