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Blababa [14]
3 years ago
15

Evaluate the following expressions for x = 2.

Mathematics
1 answer:
Firlakuza [10]3 years ago
3 0

Answer:

1. -9.2(4-2)= -18.4

2. -36.8+9.2(2)= -18.4

Step-by-step explanation:

just plug in 2 in stead of x

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Question 1
storchak [24]

Answer:

(0,-3)

Step-by-step explanation:

To find the point of intersection for the two lines, we solve the two equations simultaneously

x=0, y=-3x=0  y=-3

4 0
3 years ago
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The first step in the process for factoring the trinomial x^2-3x-40 is to
jenyasd209 [6]

(x-8)(x+5)

First thing you do is put the X's into the parentheticals because it is x^2 meaning there are 2 factors with x's. Then, you wonder what factors of -40 could add to get -3. In this case, they are -8 and 5. -8 times 5 is -40 and -8 +5 is -3. Then, you just add -8 and 5 beside the x's in the parentheticals.

5 0
3 years ago
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HELP ME pleaseeeee ill mark you as brainiest if I get two answers
sergiy2304 [10]

                                        Question 9

Given the segment XY with the endpoints X and Y

Given that the ray NM is the segment bisector XY

so

NM divides the segment XY into two equal parts

XM = MY

given

XM = 3x+1

MY = 8x-24

so substituting XM = 3x+1 and MY = 8x-24 in the equation

XM = MY

3x+1 = 8x-24

8x-3x = 1+24

5x = 25

divide both sides by 5

5x/5 = 25/5

x = 5

so the value of x = 5

As the length of the segment XY is:

Length of segment XY = XM + MY

                                = 3x+1 + 8x-24

                                = 11x - 23

substituting x = 5

                               = 11(5) - 23

                               = 55 - 23

                               = 32

Therefore,

The length of the segment = 32 units

                                        Question 10)

Given the segment XY with the endpoints X and Y

Given that the line n is the segment bisector XY

so

The line divides the segment XY into two equal parts at M

XM = MY

given

XM = 5x+8

MY = 9x+12

so substituting XM = 5x+8 and MY = 9x+12 in the equation

XM = MY

5x+8 = 9x+12

9x-5x = 8-12

4x = -4

divide both sides by 4

4x/4 = -4/4

x = -1

so the value of x = -1

As the length of the segment XY is:

Length of segment XY = XM + MY

                                = 5x+8 + 9x+12

                                = 14x + 20

substituting x = 1

                               = 14(-1) + 20

                               = -14+20

                               = 6

Therefore,

The length of the segment XY = 6 units

8 0
2 years ago
Solve for x round to the nearest tenth of a degree,if necessary.​
Ostrovityanka [42]

Answer:

Solution given:

Cos X=Adjacent/hypotenuse

Cos X=6.5/8.4

x=Cos-¹(6.5/8.4)

<u>x=39.3</u>°

4 0
2 years ago
In a math problem what is 12+6=3+5
givi [52]

Answer:its incorrect... 18 does not equal 8

Step-by-step explanation:

3 0
3 years ago
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