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Mazyrski [523]
2 years ago
11

How to justify each step in the solution of 5x+15=0

Mathematics
1 answer:
velikii [3]2 years ago
8 0

Answer:

Step-by-step explanation:

The given equation is:

5x+15 =0

Subtract 15 from both sides:

5x+15-15= 0-15

By solving the like terms we get:

5x=-15

Divide both sides by 5

5x/5 = -15/5

Simplify:

x= -3...

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Find the inverse of the function. <br><br> f(x) = 7x + 2
solmaris [256]
F ( x ) = 7 x + 2
y = 7 x + 2
- 7 x = - y + 2  /*(-1)
7 x = y - 2   / : 7
x = y/7 - 2/7 = ( y - 2 ) / 7
The inverse of the function is:
f^(-1) ( x ) = ( x - 2 ) /7 

3 0
3 years ago
Evaluate the expression ​
Leni [432]
  1. \frac{ | - 8| }{ -  | - 8| }  +  | - 15|
  2. \frac{8}{ - 8}  +  \frac{15}{1}
  3. \frac{8 - 120}{ - 8}
  4. \frac{ - 112}{ - 8}
  5. 14
4 0
3 years ago
Can someone help geometry is confusing
NikAS [45]

<LMP and <NMP are supplementary angles so sum = 180

<LMP +  <NMP = 180

(-16x + 13) + ( - 20x + 23) = 180

-16x + 13  - 20x + 23 = 180

-36x + 36 = 180

-36x = 144

    x = -4

<LMP = -16x + 13 = -16(-4) + 13 = 77

<NMP = - 20x + 23 = - 20(-4)  + 23 = 103

Answer

<LMP  = 77°

<NMP  = 103°

5 0
2 years ago
Kevin has $24 to buy a gift for his cousin . He found a gift for $22. With 5% sales tax added on. will Kevin have enough money t
Over [174]

Answer:

Yes he will have enough money to pay for the gift, and with that said, he will pay $23.10.

Step-by-step explanation:

All you have to do here is multiply 22 by 5%, which will get you 1.1, then you just add the 1.1 onto the $22 and you will have the total amount he has to pay.

6 0
3 years ago
5z^3 - 2z^4 - 9z^2 + z
likoan [24]

Answer:

-z( 2z^3-5z^2+9z-1)

Step-by-step explanation:

Apply exponent rule: a^b+c=a^b*a^c

z^2=zz

z^3=z^2*z

z^4=z^3*z

Factor out common term z:

-z(2z^3-5z^2+9z-1)

8 0
3 years ago
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