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3 years ago

Will give brainliest answer !! ig- 513_kaylee tiktok- ..theekaylee sc- kkcutie14

Mathematics

2 answers:

wel3 years ago

8 0

Answer:

Step-by-step explanation:

Serga [27]3 years ago

5 0

Answer:

Step-by-step explanation:

That angle is found by subtracting your latitude from 90 degrees. At the equator, 0 degrees latitude, the sun angle at noon at the equinox is 90 -- 0 = 90 degrees, or directly overhead.

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A cereal company puts a small plastic bear in some of its cereal boxes. Customers who collect 10 of these bears win a grand priz

Fofino [41]

Answer:

D. I think

Step-by-step explanation:

5 0

3 years ago

Several years ago, 43% of parents who had children in grades K-12 were satisfied with the quality of education the students r

Ne4ueva [31]

<h2><u>Answer with explanation</u>:</h2>

Let p be the population proportion of parents who had children in grades K-12 were satisfied with the quality of education the students receive.

Set of hypothesis :

$H_0: p=0.43\\\\ H_a:p\neq0.43$

Confidence interval for population proportion is given by :-

$\hat{p}\pm z_c\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$ , where

n= sample size

$\hat{p}$ = sample proportion

and $z_c$ is the two-tailed z-value for confidence level (c).

As per given ,

Sample size of parents : n= 1085

Number of parents indicated that they were satisfied= 466

Sample proportion : $\hat{p}=\dfrac{466}{1085}\approx0.429$

Critical value for 90% confidence interval : $z_c=1.645$ ( by z-value table)

Now, the 90% confidence interval :

$0.429\pm (1.645)\sqrt{\dfrac{0.429(1-0.429)}{1085}}\\\\=0.429\pm 0.0247\\\\=(0.429-0.0247,\ 0.429+0.0247)\\\\=(0.4043,\ 0.4537)$

Thus , the 90% confidence interval: (0.4043, 0.4537).

Since 0.43 lies in 90% confidence interval , it means we do not have enough evidence to reject the null hypothesis .

i.e. We are have no evidence that parents' attitudes toward the quality of education have changed.

3 0

3 years ago

Ave had a rectangular garden that is shown below. The garden's area is 32 square feet. The length of the width is 4 feet. What i

Arlecino [84]

Answer:

The length of Ave's garden is 8 feet.

Step-by-step explanation:

The area of a rectangle can be calculated by:

A = l × w

Where; A represents the area, l the length and w, width.

Thus from the question,

32 = l × 4

l = 32 /4

l = 8

Therefore, the length of the garden required is 8 feet.

4 0

3 years ago

Read 2 more answers

If three slugs have six eye-stalks, then two will have __ eye-stalks

blondinia [14]

Answer:

two

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%20express%20%5C%3A%20%20%5C%3A%20%5Csin%282x%29%20%20-%20%20%5Csqrt%7B3%7D%20%20%5Ccos%282x%2

gizmo_the_mogwai [7]

Answer:

α = π/3

γ = 2

x = -3π/4, -5π/12, π/4, 7π/12

Step-by-step explanation:

Easiest way to do this is in reverse.

γ sin(2x − α)

Angle sum/difference formula:

γ (cos α sin(2x) − sin α cos(2x))

Distribute:

γ cos α sin(2x) − γ sin α cos(2x)

Matching the coefficients:

γ cos α = 1

γ sin α = √3

Solve the system of equations. Divide to eliminate γ:

tan α = √3

α is between 0 and π/2, so:

α = π/3

γ = 2

sin(2x) − √3 cos(2x) = 1

Using the identity from before:

2 sin(2x − π/3) = 1

Solving:

sin(2x − π/3) = 1/2

2x − π/3 = π/6 + 2kπ or 5π/6 + 2kπ

2x = π/2 + 2kπ or 7π/6 + 2kπ

x = π/4 + kπ or 7π/12 + kπ

x is between -π and π, so:

x = -3π/4, -5π/12, π/4, 7π/12

7 0

3 years ago