Answer:
Mean is 91
SD=6.8 to the nearest tenth.
Step-by-step explanation:
Leema's test scores in chemistry are 80, 95, 88, 92, and 100.
We want to find the mean and standard deviation.
The mean is given by:
The standard deviation is given by:
SD=6.8 to the nearest tenth.
Substitute x=7 in the equation:
2+7-2•7= 2+7-14= 2-7= -5
Minor base: b=19 inches
Height: h=12.6 inches
Major base: B=29.2 inches
Area of the trapezoid: A
A=(b+B)h/2
Replacing the values:
A=(19 inches + 29.2 inches) (12.6 inches) / 2
A=(48.2 inches) (12.6 inches) / 2
A= (607.32 inches^2 ) /2
A= 303.66 inches^2
Answer: The area of the trapezoid is 303.66 square inches
Answer:
$432.18
Step-by-step explanation:
Time and a half = 50% more pay rate / 1.5*6.86 = $10.29 per hour
Double time = 2*6.86 = $13.72 per hour
Rest of the time => At regular rate
Total Amount = 10(10.29) + 4(13.72) + (54 - 10 - 4)(6.86)
= 10(10.29) + 4(13.72) + (40)(6.86)
= $ 432.18
