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JulijaS [17]
3 years ago
15

What are the solutions of x^2-4x-9=29

Mathematics
2 answers:
sattari [20]3 years ago
4 0

Answer: x =(4-√168)/2=2-√ 42 = -4.481

x =(4+√168)/2=2+√ 42 = 8.481

Step-by-step explanation:

Liono4ka [1.6K]3 years ago
3 0

Answer:

x = -4.48,  8.48 to the nearest hundredth.

Step-by-step explanation:

x^2 - 4x - 9 = 29

Completing the square:

(x - 2)^2 - 4 - 9 = 29

(x - 2)^2 = 29 + 13 = 42

x - 2 = +/-√42

x = 2 +/-√42

x = 8.48, -4.48 .

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3 years ago
If C is the midpoint of EF, C has coordinate -8, F has coordinate 4, then find the coordinate of E
ycow [4]
<h3>Answer:    -20</h3>

==========================================================

Work Shown:

Let x be the location of E on the number line.

Since C is the midpoint of E and F, this means we can find C's location by adding E and F together and dividing that sum by 2

midpoint = (endpoint1 + endpoint2)/2

C = (E+F)/2

Plug in E = x, C = -8 and F = 4. Then solve for x

C = (E+F)/2

-8 = (x+4)/2

(x+4)/2 = -8

x+4 = 2(-8) .... multiplying both sides by 2

x+4 = -16

x = -16-4 .... subtract 4 from both sides

x = -20

The location of point E on the number line is -20

-------------

As a check, lets add E and F to get E+F = -20+4 = -16

Then cut this in half to get -16/2 = -8, which is the proper location of point C

This confirms our answer.

8 0
3 years ago
It rained 40% of the days during Casey's vacation. What fraction of the days did it rain? Please help me!
Virty [35]
Answer:
40/100=2/5
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6 0
3 years ago
Solve:
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The solutions to the inequalities are x >1 and x < 6

<h3>How to solve the inequalities?</h3>

The inequality expression is given as:

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Divide by -5

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Also, we have

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Open the bracket

5x - 10 < 3x + 2

Evaluate the like terms

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Divide by 2

x < 6

Hence, the solutions to the inequalities are x >1 and x < 6

Read more about inequalities at

brainly.com/question/24372553

#SPJ1

5 0
2 years ago
Describe a model that represents 3/3 * 4/4
ioda
3/3 = 1
4/4 = 1
1 × 1 = 1
3/3 × 4/4 = 1
8 0
3 years ago
Read 2 more answers
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