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faust18 [17]
3 years ago
13

Does anyone know What is x+7=-7x-8

Mathematics
1 answer:
rjkz [21]3 years ago
3 0

Answer:

x=-\frac{15}{8}

Step-by-step explanation:

x+7=-7x-8

Add 7x to both sides:

8x+7=-8

Subtract 7 from both sides:

8x=-15

Divide both sides by 8:

x=-\frac{15}{8}

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I need help please ​
ASHA 777 [7]

Answer:

the answer would be 81

Step-by-step explanation:

6 to the second power would be 36 then you would multiply 36x2 and it would equal 72. then you would do 2x6 which is 12. then 72+12-3= 81

5 0
3 years ago
What is the square root of <br> X of the power of 2 -1 =80?
zepelin [54]

Answer:

x=6561

Step-by-step explanation:

We can solve this equation for x to get

\sqrt{x} -1=80\\\\\sqrt{x} =81\\x=(81)^2\\\\x=6561

5 0
3 years ago
IS THIS RIGHT <br> JUST ANSWER YES OR NO
Ivanshal [37]

Answer:

B

Step-by-step explanation:

x^3 + 2x^2 - 9x - 18 = x^2(x + 2) - 9(x + 2) = (x + 2)*(x^2 - 9)

(x + 2)/(x + 2)(x^2 - 9) = 1 / (x^2 - 9)

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

1/(x^2 - 9) * (x^2 - 9)/(3x  + 1) = 1/(3x + 1)


Yes B is correct.


4 0
3 years ago
Read 2 more answers
What are the real or imaginary solutions of the polynomial equation?<br> x – 8=1 ?
vampirchik [111]

Answer:

I think the answer is going to be

x=9

3 0
3 years ago
If there are 9 stars for every 2 hearts, how many stars for 4 hearts?
Archy [21]

Answer:

18 stars

Step-by-step explanation:

We can use a ratio to solve

9 stars           x

---------    = -----------

2 hearts        4 hearts

Using cross products

9*4 = 2x

36 = 2x

Divide by 2

36/2 =2x/2

18 =x

18 stars

3 0
3 years ago
Read 2 more answers
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