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timurjin [86]
3 years ago
11

Solve the equation for x. X +9= -11

Mathematics
2 answers:
Vera_Pavlovna [14]3 years ago
7 0

Answer:

x=-20

Step-by-step explanation:

x+9=-11

Subtract 9 from both sides. (-11-9=-20)

x=-20

zavuch27 [327]3 years ago
4 0

Answer:

x=-20

Step-by-step explanation:

subtract 9 from both sides

x+9-9=-11-9

x=-20

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Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. One of the x-interc
Marina CMI [18]
3x^2 + 6x - 10 = 0
3(x^2 + 2x) - 10 = 0
3[ (x + 1)^2 - 1 ] - 10 = 0
3(x+1)^2 - 13 = 0

so the vertex is at (-1,-13)
the roots will be same distance from x = -1
that is a distance 1.08 --1 = 2.08

so other root is approximately  -1 -2.08 = -3.08

the other intercept is at (-3.08,0)
5 0
3 years ago
Read 2 more answers
Help please this is due in a couple minutes!!!! Anyone know the answer??!!!?
givi [52]

Answer:

the second one

Step-by-step explanation:

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7 0
3 years ago
11. x squared - 7x = 0 12. 3x squared - 4x = 20x + 27
Stella [2.4K]
11. x² - 7x = 0
      x(x) - x(7) = 0
      x(x - 7) = 0
      x = 0    or    x - 7 = 0
                           + 7 + 7 
                               x = 7

Solution Set: {0, 7}

12. 3x² - 4x = 20x + 27
           + 4x   + 4x
             3x² = 24x + 27
      3x² - 24x - 27 = 0
      x = -(-24) ± √((-24)² - 4(3)(-27))
                              2(3)
       x = 24 ± √(576 + 324)
                         6
       x = 24 ± √(900)
                     6
       x = 24 ± 30
                 6
       x = 4 ± 5
       x = 4 + 5    or    x = 4 - 5
       x = 9    or    x = -1

Solution Set: {9, -1}
8 0
3 years ago
Rewrite 3x - 4y = 12<br> In slope intercept form
Rina8888 [55]

Answer:

y=3/4x -3

Step-by-step explanation:

3x -4y = 12

-4 y= -3x + 12

5 0
2 years ago
A new car is purchased for $50,000 and over time it’s value depreciates by one half every 5 years. What is the value of the car
Setler79 [48]

The value of the car after 5 years would be $23914.85

<u>Explanation:</u>

Given:

Worth of the new car = $50,000

Every 5 years the value depreciates by 1/2

i.e., every 5 years the value depreciates by 50%

So, we can say that every year the value depreciates by 10%

The worth of the car after 7 years would be

W = C (1 - \frac{D}{100} )^t

where,

W is the depreciated value

C is the current value

D is the depreciation rate

t is the time

Substituting the value in the equation we get:

W = 50000( 1 - \frac{10}{100} )^7\\\\W = 50000 (\frac{9}{10} )^7\\\\W = 23914.85

Therefore, the value of the car after 5 years would be $23914.85

7 0
3 years ago
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