Hi. If you need me to explain please tell me so I will edit this comment. I'll just solve the answers for you... basically if they have a common denominator just add/ subtract, and if they don't, make it so they do by multiplying the same on each side.
2)
a. 1 3/4 + 2 1/4 = 4
b. 3 7/10 + 1 1/10 = 4 4/5
c. 2 1/8 + 3 3/8 = 5 1/2
d. 5 1/2 + 3 1/4 = 8 3/4
e. 5/8 + 2 1/4 = 2 7/8
f. 3 3/10 + 5 2/5 = 8 7/10
3)
a. 2 7/10 - 1 3/10 = 1 2/5
b. 3 5/8 - 2 3/8 = 1 1/4
c. 1 5/6 - 1/6 = 1 2/3
d. 3 7/10 - 1 1/2 = 2 1/5
e. 4 3/5 - 2 = 2 3/5
f. 1 3/8 - 1 1/8 = 1/4
Answer:
Yes, There is significant difference.
Step-by-step explanation:
Null Hypothesis , H0 : Mean income = 15000
Alternate Hypothesis , H1 : Mean income ≠ 15000
t = (x - u) / ( s / √n)
x = sample mean = 14500 here, u = population mean = 15000 here , s = standard deviation = 975 here , n = sample size
t = (14500 - 15000) / (975 / √169)
-500 / 75 = - 6.66
As calculated t value in absolute terms is > 1.96 , ie tabulated value at 95% significance level (two sided). So we reject the null hypothesis in favor of alternate hypothesis. Hence, we state that 'Mean Income ≠ 15000'
Answer:
The answer is B or pi/2 to pi radians.
Step-by-step explanation:
Answer:
(5 x (-20)) * (100 x (0.7))
Use TrianCal to draw a triangle with phi as Great Piramid (minimum perimeter given 2 equal heights) = maximun stability.
NOTE: Phi=(1+√5)/2≈1.62 and acos(1/Phi)≈51.83º