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3 years ago

Find the cosine.. please help will give BRAINLIEST....

Mathematics

1 answer:

Alika [10]3 years ago

3 0

Answer:

39 / 89

Step-by-step explanation:

cos ( Q ) = A / H = 39 / 89

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onsider two populations for which μ1 = 38, σ1 = 2, μ2 = 23, and σ2 = 4. Suppose that two independent random samples of sizes n1

levacccp [35]

Answer:

Center = 15

Spread = 0.599

Shape = Normal

Step-by-step explanation:

The provided information is:

$\mu_1=38 \ \ \ \ \ \ \ \ \mu_2 = 23\\\sigma_1 =2 \ \ \ \ \ \ \ \ \ \sigma_2=4\\n_1=45 \ \ \ \ \ \ \ \ n_2 =59$

Thus the center(mean) of the distribution is:

$\begin{aligned}Mean &= \mu_1-\mu_2\\&=38-23\\&=15\end{aligned}$

The spread (standard deviation) of the distribution is:

$\begin{aligned}\textrm{Standard deviation}&=\sqrt{\frac{\sigma_1^2}{n_1}+\frac{\sigma_2^2}{n_2}}\\&=\sqrt{\frac{4}{45}+\frac{16}{59}}\\&=0.599\end{aligned}$

The shape of the distribution is also normally distributed.

3 0

3 years ago

What is the result when the number 39 is decreased by 3%?

dlinn [17]

Answer:

New value =

39 - Percentage decrease =

39 - (3% × 39) =

39 - 3% × 39 =

(1 - 3%) × 39 =

(100% - 3%) × 39 =

97% × 39 =

97 ÷ 100 × 39 =

97 × 39 ÷ 100 =

3,783 ÷ 100 =

37.83

Step-by-step explanation:

3 0

3 years ago

What kind of transformation is illustrated in this figure

Nastasia [14]

Answer:

I think your answer is(C) rotation.

6 0

3 years ago

Dilate line f by a scale factor of 3 with the center of dilation at the origin to create line f'. Where are points A' and B' loc

Anuta_ua [19.1K]

Answer:

Step-by-step explanation:

(D). The locations of A' and B' are A' (0, 6) and B' (6, 0); lines f and f' are parallel.

8 0

3 years ago

What is the equation of the line that has a slope of 3 and goes through the point (-3,-5)?

azamat

Answer:

Here,

slope (m)=3

y-intercept (c)= -5

Now,

The equation of the line;

or,y=mx+c

or,y=3x-5

or,0=3x-y-5...is the required equation.

6 0

4 years ago