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4 years ago

What is the approximate value of sin C? Please help! Urgent

Mathematics

1 answer:

Romashka-Z-Leto [24]4 years ago

5 0

Answer:

B. 0.36

Step-by-step explanation:

Given:

Right ∆ABC,

AB = 5

BC = 13.93

CA = 13

Required:

Value of sin C

SOLUTION:

$sin(C) = \frac{opposite}{hypotenuse}$

Opposite = 5

Hypotenuse = 13.93

$sin(C) = \frac{5}{13.93}$

$sin(C) = 0.3589$

$sin(C) = 0.36$

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-5d=30<br><br> I need this quick

Vikki [24]

Answer:

D = -6

Step-by-step explanation:

divide -5 by each side of the equation

3 0

3 years ago

The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of regular gasoline is $3.94 (U

tekilochka [14]

Answer:

a) 25

b) 49

c) 97

Step-by-step explanation:

The sample size is calculated using the formula, n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

Now,

for 95% confidence level value of z-factor = 1.96

Given:

Mean = $3.94

standard deviation = $0.25

thus,

a) for margin of error = $0.10

n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

n = $(\frac{0.25\times1.96}{\textup{0.10}})^2$

n = 4.9²

n = 24.01 ≈ 25 (Rounded off to next integer)

b) for margin of error = $0.07

n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

n = $(\frac{0.25\times1.96}{\textup{0.07}})^2$

n = 7²

n = 49

c) for margin of error = $0.05

n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

n = $(\frac{0.25\times1.96}{\textup{0.05}})^2$

n = 9.8²

n = 96.04 ≈ 97 (Rounded off to next integer)

6 0

4 years ago

What are the solution(s) to the quadratic equation 40 - x2 = 0?

zzz [600]

Answer:

±2sqrt(10) = x

Step-by-step explanation:

40 - x^2 = 0

Add x^2 to each side

40 - x^2+x^2 = x^2

40 = x^2

Take the square root of each side

sqrt(40) = sqrt(x^2)

±sqrt(40) = x

±sqrt(4) sqrt(10) = x

±2sqrt(10) = x

7 0

3 years ago

If one side of a square is increased by 8 cm and an adjacent side decreased by 2 cm, a rectangle is formed whose perimeter is 40

sveta [45]

<h3>Answer: 7 cm</h3>

===========================================================

Explanation:

x = side length of the original square (measured in cm).

One side increases by 8 cm to go from x to x+8. At the same time, an adjacent side decreases from x to x-2 (aka it decreases by 2 cm).

The x by x square turns into a x+8 by x-2 rectangle.

L = x+8 = length

W = x-2 = width

P = perimeter of rectangle

P = 2(L+W)

P = 2(x+8+x-2)

P = 2(2x+6)

P = 4x+12

The perimeter of this rectangle is 4x+12, which is set equal to the stated perimeter 40 cm. We'll use this to solve for x.

P = 40

4x+12 = 40

4x = 40-12

4x = 28

x = 28/4

x = 7

The square originally had side lengths of 7 cm.

Increasing this by 8 cm gets us x+8 = 7+8 = 15 cm. So L = 15.

Also, W = x-2 = 7-2 = 5 cm is the width.

Then note how P = 2(L+W) = 2(15+5) = 40 to help confirm the answer.

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3 years ago

a video streaming service offers unlimited movies for $15 per month or 1.99 per movie. GRaph an inequality that represents when

dezoksy [38]

I'd graph it but brainly doesnt have that ability

6 0

3 years ago