Answer:
Given expression has the value 69
Step-by-step explanation:
Given equation is:
Now we have to put x = 3
So the equation will become:
By simplifying:
As 
and 2*3 = 6
So the above equation will become:
So the value of given expression is 69.
i hope it will help you!
Answer:
30 degrees
Step-by-step explanation:
This is the third time I am answering the same question asked by you.
Answer:
Z - score = 2.83
Step-by-step explanation:
Given the following :
Number of samples (N) = 60
Sample mean (x) = 41.9mg
Population mean (μ) = 40mg
Population standard deviation (sd) = 5.2
Using the relation :
Z = (x - μ) / (sd / √N)
Z = (41.9 - 40) / (5.2 / √60)
Z = 1.9 / (5.2 / 7.7459666)
Z = 1.9 / 0.6713171
Z = 2.8302570
Therefore, the z-score = 2.83
Answer: 8 inches
Solving Steps:
x(x + 6) = 112
x^2 + 6x = 112
x^2 + 6x - 112 = 0
(x + 14)(x - 8) = 0
x + 14 = 0
x = -14
^^^ reject because distance can’t be negative
x - 8 = 0
x = 8
Check:
x(x + 6) = 112
8(8 + 6) = 112
64 + 48 = 112
112 = 112
