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tino4ka555 [31]
2 years ago
9

Can somebody help me seriously

Mathematics
1 answer:
Semmy [17]2 years ago
7 0

Answer: b

Step-by-step explanation:

I don't know but i am right

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Solve the system of equations. y = -5x + 24 y = 4x - 21 a. ( -5, -1) c. ( -1, 5) b. ( 5, -1) d. No solution
Svetlanka [38]

y = -5x + 24

y = 4x - 21

Since both of these equations are equal to Y, theyre equal to each other.

So we can make an equation with y = -5x + 24 in one side and y = 4x - 21 on the other.

-5x + 24 = 4x - 21

Now in order to get the value of x we need to isolate it in one side of the equation. We can do this by subtracting 24 from both sides of the equation:

-5x + 24 - 24 = 4x - 21 - 24

-5x = 4x - 45

Now we subtract 4x from both sides so the 4x shift to the other side

-5x - 4x = 4x - 4x - 45

-9x = -45

Finally divide both sides by -9 so x is by itself

(-9)÷(-9x) = -(45)÷(-9)

x = 5

Since we did all of this to BOTH sides of the equation, both sides are still equal to each other and the equation still is true.

Now apply x = 5 to either of the initial equations to find the value of Y

y = -5x + 24 or y = 4x - 21

(I'll do both but u only need one)

y = -5(5) + 24

y = -25 + 24

y = -1

y = 4(5) - 21

y = 20 - 21

y = -1

Either way, X is 5 and Y is -1

Answer (5, -1)

5 0
2 years ago
What is the value of e?<br> 1190<br> c<br> a<br> O A. 22°<br> OB. 48°<br> 0 C. 61°<br> O D. 180°
DiKsa [7]

Answer:

C. 61 degrees

Step-by-step explanation:

a line is 180 degrees

so e and 119 degrees makes a line

so you subtract 180-119= 61 degrees

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2 years ago
A 20-foot ladder touches a building 16 feet up the wall. What is the measure of the angle the ladder makes with the ground (mACB
Alecsey [184]

The answer is the last option, 27°

4 0
3 years ago
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The area of a parallelogram is 31.5 ft and the height is 6.3 ft. What is the length of the base?
makvit [3.9K]
The base is 5 because when you divide 31.5 by 6.3 it's 5
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3 years ago
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4 - -9
Svetradugi [14.3K]

Answer:

13

Step-by-step explanation:

a negative plus a negative makes a positive

3 0
2 years ago
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