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Studentka2010 [4]
2 years ago
11

Solve for x please help me an explanation is not needed if you don’t want to add it !

Mathematics
1 answer:
Reptile [31]2 years ago
4 0

Answer:

70˚

Step-by-step explanation:

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Select all that apply.
nekit [7.7K]

Answer:

The individuals are observed the exact way they act in real life.

Step-by-step explanation:

There are two main types of studies in research; one is controlled or experimental and the other is observational.

In observational studies, the individuals participating in study are not manipulated or intervened or controlled in any way by the researcher.

Hence the statements best describes a characteristic of an observational study is the individuals are observed the exact way they act in real life !

4 0
3 years ago
9. A building 62 feet tall casts a shadow 21 meters long. At what angle is the sun shining on the building?
Alexandra [31]

First, we imagine a right triangle. Second, we are given that the building is 62 feet tall. Since the height of building is vertical straight - that means the height is opposite side of triangle. It also casts a shadow 21 meters long. Shadow should be the adjacent side because it casts on the ground and not on the air.

If we imagine the right triangle + the problem in our head, we'd get the triangle that the opposite side is 62 feet tall and the adjacent side is 21 meters long.

Use the tangent ratio to find the angle of sun shining.

\large \boxed{ \tan \theta =  \frac{opposite}{adjacent} }

Substitute adjacent = 21 and opposite = 62 in the ratio.

\large{tan \theta =  \frac{62}{21} }

For this part, you might need a calculator or trigonometric table because some values cannot be exactly found.

From the equation, we should get 71.288 which we round the answer to nearest hundreth and the answer would be 71.29

Answer

  • The answer is 71.29
3 0
3 years ago
Read 2 more answers
What is the solution set of the following equation? -5x x 9 = -4x 12
Rama09 [41]
The solution of this equation is 16/15

8 0
3 years ago
community gym charges a 40$ membership fee and a 50$ monthly fee workout gym charges a 190$ membership fee and a 40$ monthly fee
sweet-ann [11.9K]

Let x represent months

40 + 50x = 190 + 40x

Subtract 45 from both sides

40 + 10x = 190

Subtract 40 from both sides

10x = 150

Divide 10 by both sides and x = 15 months

Plug back in the 15 months for x

40 + 50(15)= $790

7 0
2 years ago
Which algebraic expression is equivalent to the expression below?
inessss [21]
Using the formula a(b+c) = ab + ac, then 7(2x-6) = 14x - 42. The answer is D.
7 0
3 years ago
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