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Kaylis [27]
2 years ago
9

5-16 Find the general indefinite integral. 16.

in%20x%7D%20d%20x" id="TexFormula1" title="\int \frac{\sin 2 x}{\sin x} d x" alt="\int \frac{\sin 2 x}{\sin x} d x" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
givi [52]2 years ago
3 0

I assume the integral is

\displaystyle \int\frac{\sin(2x)}{\sin(x)} \, dx

Simplify the integrand:

\sin(2x) = 2\sin(x)\cos(x) \implies \dfrac{\sin(2x)}{\sin(x)} = 2\cos(x)

Then the indefinite integral is

\displaystyle \int\frac{\sin(2x)}{\sin(x)} \, dx = 2 \int \cos(x) \, dx = \boxed{2 \sin(x) + C}

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The bar graph shows how each month's rainfall compares to the historical average.
mina [271]

Answer:

a. The difference in rainfall is 4.03in

b. The total amount of rainfall for the year is negative, -1.73

Step-by-step explanation:

a. Wettest month 2.36in and dryest month -1.67in

2.36

-1.67

-------

4.03

b. -0.45   +   -0.88   +   0.94   +   -1.67   +   -0.96   +   0.83   +   2.36   +   1.39   +   0.35   +   -1.35   +   -0.9   +   -1.39 = -1.73

3 0
2 years ago
The height of a triangle is 5 m less than its base. The area of the triangle is 42 m².
SCORPION-xisa [38]
A = (1/2) b * h
h = b - 5
42 = (1/2) * b * (b - 5)
42 = (1/2) * b^2 - 5b
multiply both sides by 2 to clear the fraction (1/2)
2(42) = 2(1/2) *b^2 - 5b
84 = b^2 -5b
Since this is a quadratic equation, subtract 84 from both sides so that it is set = to zero.
b^2 - 5b - 84 = 0
Now factor.
(b - 12)(b + 5) = 0
b - 12 = 0; b = 12
b + 5 = 0; b = -5
You can't have a negative length so the answer is 12m
To check the answer:
A = (1/2) * 12* 7
A = 42 m^2
4 0
3 years ago
Identify an equation in point-slope for the parallel to y=3/4x-4 that passes through (-1,7)
Nikitich [7]
The answer is B! Ive past my test for this task.
4 0
3 years ago
Bessie bought 10 gallons of Bush's Sweet Tea for a family reunion. How many liters did Bessie buy?
Liula [17]

Step-by-step explanation:

If 1 gallon = 3.785 litres

Then, 10 gallons = 37.85 litres

4 0
3 years ago
What is the product?
ad-work [718]

Answer is C, just multiply and expand.

7 0
3 years ago
Read 2 more answers
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