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3 years ago

What is the sum of -2 and -7

Mathematics

2 answers:

shutvik [7]3 years ago

8 0

Answer: -9

Step-by-step explanation:

Serga [27]3 years ago

6 0

-2-7 is equal to -9

hope this helps

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2nq=3+7nq solve for n thanks

Gnesinka [82]

Answer:

n = - $\frac{3}{5q}$

Step-by-step explanation:

Given

2nq = 3 + 7nq ( subtract 7nq from both sides )

- 5nq = 3 ( divide both sides by the multiplier - 5q )

n = $\frac{3}{-5q}$ = - $\frac{3}{5q}$

7 0

3 years ago

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The perimeter of an equilateral triangle is 63 inches. If the length pf each side is (4x-3), write an equation and find the valu

Nady [450]

Answer:

x = 6

Step-by-step explanation:

Givens

There are 3 sides. All are equal to (4x - 3)

Their sum = 63

Formula

3(4x - 3) = 63

Solution

3(4x - 3) = 63 Divide by 3
12x - 9 = 63 Add 9 to both sides
12x = 63 + 9
12x = 72 Divide by 12
x = 72/12

x = 6 Answer

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2 years ago

Find the perimeter of the figure. *<br> 5.7 m<br> 6.2 m<br> 8.1 m

vichka [17]

Answer:

Step-by-step explanation:

When looking for the perimeter just add all the numbers together.

5 0

3 years ago

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Help me with these questions plz

UkoKoshka [18]

First, this shoudnt be in mathematics and second, i think this is socila studies.

4 0

2 years ago

Use identities to find the values of the sine and cosine functions for the following angle measure.

puteri [66]

Using the cosine double angle formula,

$\cos 2\theta=2\cos^2 \theta-1=\frac{12}{13}\\\\2\cos^{2} \theta=\frac{25}{13}\\\\\cos^{2} \theta=\frac{25}{26}\\\\\boxed{\cos \theta=\frac{5}{\sqrt{26}}}$

(Note I took the positive case since $\theta$ terminates in the first quadrant)

Using the Pythagorean identity,

$\sin^2 \theta+\cos^2 \theta=1\\\\\sin^2 \theta+\frac{25}{26}=1\\\\sin^2 \theta=\frac{1}{26}\\\\\boxed{\sin \theta=\frac{1}{\sqrt{26}}}$

(Note I took the positive case since $\theta$ terminates in the first quadrant)

6 0

10 months ago