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Lilit [14]
3 years ago
13

Plz help me answer 1 2 and 3​

Mathematics
1 answer:
Yuki888 [10]3 years ago
5 0

YesAnswer:

Step-by-step explanations d

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Find the radius y of circle C, given that x = 12 and z = y + 8.<br> PLEASEEE HELP ME
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At a certain concert, 73 % of the audience was under 20 years old. A random sample of n = 146 members of the audience was select
Tatiana [17]

Answer:  p = 0.73

Step-by-step explanation:

Given that,

73% of the audience was under 20 years old :

so, probability (p) = 0.73

n = 146

Mean of the distribution of sample proportion = ?

According to central limit theorem,

np(1-p) ≥ 10

146 × 0.73(0.27) ≥ 10

28.77 ≥ 10

∴ Central limit theorem assumes that the sample distribution of the sample proportion is normally distributed.

Hence, the mean of the distribution of sample proportion:

μ = p = 0.73

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3 years ago
The angle of elevation to a nearby tree from a point on the ground is measured to be 66^{\circ} ∘ . How tall is the tree if the
Nimfa-mama [501]

By comparing with a right triangle, we will see that the height of the tree is 62.12ft

<h3>How tall is the tree?</h3>

We can compare the situation with a right triangle. Such that the hypotenuse measures 68 ft, and an angle measures 66°.

We want to get the height of the tree, which would be the opposite cathetus, then we can use the relation:

Sin(a) = (opposite cathetus)/hypotenuse.

Sin(66°) = H/68ft

Tan(66°)*68ft = H = 62.12ft

The height of the tree is 62.12ft

If you want to learn more about right triangles, you can read:

brainly.com/question/2217700

6 0
2 years ago
Let f(x) = x + 3 and g(x) = 1/x The graph of (gºf)(x) is shown below what is the range of ( gof) (x) .
charle [14.2K]

Answer:

The range of the function (g\°f)(x) is

B.  is all real numbers except y=0

Step-by-step explanation:

Given functions:

f(x)=x+3

g(x)=\frac{1}{x}

To find the range of (g\°f)(x).

Solution:

In order to find (g\°f)(x) , we will plugin f(x) in function g(x).

(g\°f)(x)=g(f(x))

(g\°f)(x)=\frac{1}{x+3}

The graph of the function (g\°f)(x) shows that

1) As x approaches -3 (but never touches the line x=-3), y tends to positive or negative infinity.

2) As y approaches 0 (but never touches the line y=0) , x tends to positive or negative infinity.

Thus, the range of the function is all real numbers except y=0

4 0
3 years ago
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