Answer:
- 5x²-2x+7+2x²+6x-9
- 5x²+2x²-2x+6x+7-9
- 7x²+4x-2
so, 7x²+4x-2 is yr answer.
hope it helps.
<h3>stay safe healthy and happy.</h3>
Answer:
1/ 6^12
Step-by-step explanation:
f[x} = x ^ (-2x)
f(6) = 6 ^ (-2*6)
= 6 ^ -12
We know the negative exponent moves it to the denominator
= 1/ 6^12
Melanie: 15 years old
Kevin: 5 years old
Assume Kevin's present age is x.
That means that 3 years ago, his age would be x - 3.
Melanie's age would be 6(x - 3).
Same thing for 5 years into the future:
Kevin's age would be x + 5.
Melanie's age would be 2(x + 5).
The two equations we have here are:

By subtracting both equations, we are simplified to:
8 = -4x + 28
By solving the equation, we get x = 5.
That means that Kevin's current age is 5 years old.
Melanie's age could be calculated by substituting Kevins'.
6(x - 3) --> 6(5 - 3) --> 12
Since that was 3 years ago, you need to add 3 to 12 to get her current age.
12 + 3 = 15
Melanie's current age is 15 years old.
Answer:
Step-by-step explanation:
-3x -7 +2x + 9 = 5
-x + 2 = 5 (you are combining like terms here)
-x = 3
x = -3
Hope this helps :)
Slope = change in y/change in x.
-2-0/2-1
-2/1
-2
Final answer: -2