Anna has purchased three gift for her closest friends. She decides to wrap them in holiday paper. How many square inches of wrap
2 answers:
Here the gift is of the shape of cube.
So in order to wrap the gift we need to find the surface area of cube.
The formula to find surface area of cube is given by:
Where a is length of each edge.
So let us find surface area of one cube.
Length of side length (edge) is given as 7 inches.
Plugging this in the formula:
Surface Area of one cube = 294 square inches.
Now Anna purchased Three gifts.
So Surface area of three gifts = 3*294 = 882 square inches.
Answer: Total wrapping paper required by Anna is 882 square inches.
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Answer:
μ = 5.068 oz
Step-by-step explanation:
Normal distribution formula to use the table attached
Z = (x - μ)/σ
where μ is mean, σ is standard deviation, Z is on x-axis and x is a desired point.
98% of 6-oz. cups will not overflow means that the area below the curve is equal to 0.49; note that the curve is symmetrical respect zero, so, 98% of the cases relied between the interval (μ - some value) and (μ + some value)].
From table attached, area = 0.49 when Z = 2.33. From data, σ = 0.4 oz and x = 6 oz (maximum capacity of the cup). Isolating x from the formula gives
Z = (x - μ)/σ
2.33 = (6 - μ)/0.4
μ = 6 - 2.33*0.4
μ = 5.068
This means that with a mean of 5 oz and a standard deviation of 0.4 oz, the machine will discharge a maximum of 6 oz in the 98% of the cases.
Answer:
Step-by-step explanation:
There's a calculated explanation below. I hope this helps!
