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pychu [463]
3 years ago
12

What is -13 + x = -21 ?

Mathematics
2 answers:
Ilia_Sergeevich [38]3 years ago
7 0

Answer:

x= -8

Step-by-step explanation:

Add 13 to both sides.

-13+x= -21

+13      +13

This gives you, x= -8.

masya89 [10]3 years ago
5 0

Answer:

X=-8

Step-by-step explanation:

rearrange

-13+x-(-21)=0

solve

13-21=-8

X=-8

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Answer:it costs $1150 to rent the apartment for one month.

Step-by-step explanation:

Let x represent the cost to rent the apartment for one month.

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The total amount they pay the landlord is $2800. Therefore

2x + 500 = 2800

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4 years ago
Find sec x if sin x = -7/25 and cot x = -24/7.<br> Show work.
vredina [299]

Answer:

25/24

Step-by-step explanation:

sin x = O/H = -7/25

cot x = A/O = -24/7

sec x = H/A

if sin x = -7/25, the opposite side is 7, and the hypotenuse is 25

if cot x = -24/y, the adjacent side is 24 (and the opposite side is still 7)

since H = 25 and A = 24, sec x = 25/24

Also, you know it's positive because when sin x is negative, the angle is in quadrants 3 or 4, and when cot x is negative, the angle is in quandrants 2 or 4, so the only quadrant that satisfies both is 4. In quadrant 4, sec x is positive.

4 0
3 years ago
Read 2 more answers
Three students are working to find the solution set of this system of equations: y = 3x + 10 2y = 6x – 4
ivanzaharov [21]

Answer:

Step-by-step explanation:

Since this is a system with two equations, we can easily use a graphing calculator to find the solution

The intersection between the graphs of the equations

y = 3x + 10

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y = 3x - 2

However, we can see that the graphs have the same slope m = 3

Since both equations are not equal, there is no solution for this system

Please see attached graph. The lines are parallel and they never touch each other.

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konstantin123 [22]
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3 years ago
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Harman [31]
9.31
Hope that helps!!!!!!
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3 years ago
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