Answer:
-8
Step-by-step explanation:
-6(x+2)=36
-6x-12=36
-6x=48
x=-8
Answer:
whew~ lots of this....
Step-by-step explanation:
1. 6
2. 4ft
3. 64
4. 8
5. 10
6. 80
7. 144
Answer:
c = 49/4
Step-by-step explanation:
The given expression is x^2 - 7x + c
This trinomial must be a perfect square.
Therefore, c must be a prefect square number.
So b^2 - 4ac = 0. That is discriminant must be equal to zero.
In the given expression a =1 and b = -7
Now plug in these values in the discriminant formula.
(-7)^2 - 4*1*c = 0
49 -4c = 0
4c = 49
c = 49/4
x^2 - 7x + 49/4 = (x - 7/2)^2
which is perfect square trinomial.
Thank you.
Answer:
16. D
17. D
18. D
19. B
20. C
Step-by-step explanation:
Answer:
14b - 9m
Step-by-step explanation:
10b - 4b + 8b - 5m - 4m
14b - 9m
