Answer:
let the number be x
23+7(x)=79
23+7x=79
7x=79-23
7x=56
x=56/7
x=8
I would appreciate if my answer is chosen as a brainliest answer
Answer:
Your Answer is E. 10x-35
Step-by-step explanation:
Factor 10x−35
10x−35
=5(2x−7)
Answer:
5(2x−7)
Answer:false
Step-by-step explanation:
5-3=2 7-8 you can't do so it's false
Z at 75% ≈ 0.674. Since the spending is more than $75, Z = -0.674
Z at 15% ≈ - 1.036. Since the spending is more than $150, Z = 1.036
Now,
Z = (x-mean)/SD => Z*SD = x-mean
Therefore,
-0.674*SD = 75 - mean ------- (1)
1.036*SD = 150 -mean ------- (2)
---------------------------------------------
(1) - (2)
-1.71SD = - 75 => SD = 75/1.71 = 43.8596
Substituting SD in (1) => -0.674*43.8596 = 75 -mean => mean = 75+(0.674*43.8596) = 104.46.
Then,
SD = 43.86, mean = 104.46
Answer:
59
Step-by-step explanation: