3 years ago

Simplify the following, where k represents any integer: cos(2kpi-x)(-sin(2kpi-x))

Mathematics

1 answer:

Citrus2011 [14]3 years ago

5 0

= cos( -x ) * [ - sin( - x ) ] = cosx * sinx ;
cosx * sin x is the right answer !

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A total of 628 tickets were sold for the school play. They were either adult tickets or student tickets. There were 72 fewer stu

myrzilka [38]

350 adult tickets were sold

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3 years ago

What is the area of this irregular figure?

VikaD [51]

Answer:

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Step-by-step explanation:

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4 years ago

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Solve the equation -5 = c/7

sweet-ann [11.9K]

Multiply both sides by 7.

-5 * 7 = c/7 * 7

-5 * 7 = c

c = -35

Your final answer is c = -35.

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3 years ago

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Solve. 14/n+7=10/n-4<br><br> N=5.25<br> N=3.5<br> N=31.5<br> N=30

Ilya [14]

Answer:

n=31.5

Step-by-step explanation:

The given question is:

$\frac{14}{n+7}=\frac{10}{n-4}$

Cross multiply to get:

$14(n-4)=10(n+7)$

Expand the parenthesis:

$14n-56=10n+70$

Group similar terms:

$14n-10n=70+56$

Combine the like terms

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Divide both sides by 4

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5 0

3 years ago

The length of a rectangular garden is 5 times its width.

Delvig [45]

Answer:

10 m and 50 m

Step-by-step explanation:

<h3>Given</h3>

l = 5w
A = 500 m²

Length and width

<h3>Solution</h3>

Area formula

A = lw
A= 5w*w= 5w²
5w² = 500
w²= 100
w = √100
w = 10 m

Then

l = 5w = 5*10 m = 50 m

3 0

3 years ago