Answer:
Step-by-step explanation:
hello :
5(x + 7)² = 245
(x + 7)² = 49
x=0 is solution but you have other solution -14 because :(-14+7)² = (-7)² =49
here is an solution Step-by-step :
(x + 7)² = 49 means : (x + 7)² = 7²
(x + 7)² - 7²=0 use identity : a²-b² = (a-b)(a+b)
a=x+7 and b= 7
(x+7-7)(x+7+7) = 0
x(x+14)=0
x=0 or x+14=0
so : x=0 or x= -14
Answer:
Only one solution.
Step-by-step explanation:
1) Collect like terms.
2) Simplify 
to 
.
3) Expand by distributing terms.
4) Collect like terms.
5) Simplify.
Therefore, the answer is x + 39 and there is only one solution possible.
Thanks Lots! You're awesome
Answer:
It would be 80% :)
Hope this helps!
Step-by-step explanation:
32 ÷ 40 = 0.8
0.8 × 100/100 =
0.8 × 100% =
(0.8 × 100)% =
80%
