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MArishka [77]
3 years ago
8

X - 15 = -20 please show work

Mathematics
2 answers:
dem82 [27]3 years ago
7 0
Plus 15 on both sides then x is -20 + 15 which is -5. So x is -5.
Natasha2012 [34]3 years ago
5 0

Answer:

x = -5

Step-by-step explanation:

x - 15 = -20

  + 15  + 15

x = -5

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Factor using the x method <br><br><br> ( please do not answer without showing work )
muminat

Answer:

5(x + 10)(10x - 3)

Step-by-step explanation:

We are factoring

50x^{2} + 485x - 150

So:

((2•5^2x^2) +  485x) -  150

Pull like factors :

50x^2 + 485x - 150  =   5 • (10x^2 + 97x - 30)

Factor

 10x^2 + 97x - 30

Step-1: Multiply the coefficient of the first term by the constant   10 • -30 = -300

Step-2: Find two factors of  -300  whose sum equals the coefficient of the middle term, which is 97.

-300    +    1    =    -299

     -150    +    2    =    -148

     -100    +    3    =    -97

     -75    +    4    =    -71

     -60    +    5    =    -55

     -50    +    6    =    -44

     -30    +    10    =    -20

     -25    +    12    =    -13

     -20    +    15    =    -5

     -15    +    20    =    5

     -12    +    25    =    13

     -10    +    30    =    20

     -6    +    50    =    44

     -5    +    60    =    55

     -4    +    75    =    71

     -3    +    100    =    97

Step-3: Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -3  and  100

                    10x^2 - 3x + 100x - 30

Step-4: Add up the first 2 terms, pulling out like factors:

                   x • (10x-3)

             Add up the last 2 terms, pulling out common factors:

                   10 • (10x-3)

Step-5: Add up the four terms of step 4:

                   (x+10)  •  (10x-3)

            Which is the desired factorization

Thus your answer is

5(x + 10)(10x - 3)

8 0
2 years ago
Read 2 more answers
Which of the following best represents the speed of Halley's comet when it is nearest to Earth?
Tasya [4]
I believe it would be A but i could be way off
8 0
3 years ago
Read 2 more answers
Evaluate 16^1/2 and show work​
LUCKY_DIMON [66]
Here is your answer

{16}^{1/2} = ({4}^{2})^{1/2}\\= {4}^ {2× 1/2}\\= 4

HOPE IT IS USEFUL
4 0
3 years ago
Will Mark brainliest if answer both correctly / What is X= ? / conditional statement
harkovskaia [24]
The answer is for 1st question is “10.4” and for the second question “non of these choices are correct”.

Explanation:

For the 1st question:

tan = opposite / adjacent

tan 30 = x / 18

18 tan 30 = x

x = 10.4

For the 2nd question,
If a triangle as an angle of 90 degree, it is 100% a right triangle.

Hope it helps :), mark me brainliest please!
6 0
3 years ago
Consider the original complex figure and the reduction.
Roman55 [17]

Answer: The answer is C. 5

Step-by-step explanation:

Just took the test on edg.

4 0
2 years ago
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