4/3 = 8/x....4 orange to 3 green = 8 orange to x green
cross multiply
(4)(x) = (8)(3)
4x = 24
x = 24/4
x = 6 green <==
Answer:
x=7 so there is one solution
Step-by-step explanation:
5x-(7x-1)=-3x+8
Distribute the minus sign
5x -7x +1 = -3x+8
Combine like terms
-2x +1 = -3x+8
Add 3x to each side
-2x+3x+1 = -3x+3x+8
x+1 = 8
Subtract 1 from each side
x+1-1=8-1
x=7
Answer:
Step-by-step explanation:
We want to determine a 98% confidence interval to estimate the true mean shear strength of anchor bolts.
Number of sample, n = 78
Mean, u = 4.25
Standard deviation, s = 1.3
For a confidence level of 98%, the corresponding z value is 2.33.
We will apply the formula
Confidence interval
= mean ± z × standard deviation/√n
It becomes
4.25 ± 2.33 × 1.3/√78
= 4.25 ± 2.33 × 0.147
= 4.25 ± 0.34
The lower end of the confidence interval is 4.25 - 0.34 = 3.91
The upper end of the confidence interval is 4.25 + 0.34 = 4.59
b) the confidence interval would still be valid because the number of samples is large(> 30)
Answer: well it's correct-
Step-by-step explanation: it shows that e equals to 6-x, x would be 3 so then the problem would still be correct (3=|3|) and |3| just equals, well, 3.
Answer:
The answer is the 3rd one
Step-by-step explanation:
