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myrzilka [38]
3 years ago
13

What is the value of x?

Mathematics
1 answer:
Inga [223]3 years ago
4 0

answer: 12

Step-by-step explanation:

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Anybody knows how to do this ?????
Afina-wow [57]

Answer:

the quickest way would be to "complete the square"

on x^2 + 5x - 7

you will end up with  (x+2.5)² = 13.25

or

 y =  (x+2.5)²-13.25    

the vertex

VERTEX: (-2.5,-13.25)    

Solution/X-Intercepts: -6.14 AND 1.14  

Step-by-step explanation:

 

3 0
3 years ago
Which of the following is the value of x?<br><br> A. 2<br><br> B.11<br><br> C. 20 <br><br> D. 29
Lunna [17]

Answer:

c

Step-by-step explanation:

180= 45+ (5x+35)

-45 -45

135 = 5x + 35

-35 -35

100 = 5x

/5 /5

x=20

5 0
3 years ago
2n − 35=5 help i have to do this for school
yawa3891 [41]

2n-35=5

+35 both sides

2n=40

÷2 both sides

n=20

4 0
4 years ago
Read 2 more answers
Write an equation of the line that passes through (-3,3) and is perpendicular to the line 2y = 8x - 6.
White raven [17]

Answer:

y = -0.25x + 2.25

Step-by-step explanation:

First, you can simplify the equation of the line it's perpendicular to (2y = 8x - 6) by dividing both sides by 2. This means you would get y = 4x - 3. From that you can conclude that the slope of that line is 4.

Lines always have a slope that is the negative reciprocal of the slope of the line they are perpendicular to, so you know the slope of the line is going to be -1/4.

So far, you have the equation y = -1/4x + b and you have to find b.

You can substitute in the point (-3, 3) so you would have 3= -1/4 * -3 + b

Solving,

3 = 3/4 + b

b = 2 and 1/4

Therefore the equation is y = -1/4x + 2 1/4 or y = -0.25x + 2.25

6 0
3 years ago
Which of these particles are found inside of the nucleus of an atom?
denpristay [2]

Answer:

Protons and neutrons.

Step-by-step explanation: basic science

5 0
3 years ago
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