Tom can paint twice as fast as Mark. If they complete a job in 4 hours, how long would it have taken Tom working alone?
1 answer:
You might be interested in
Answer:
$996
Step-by-step explanation:
The rectangular plot has an area that is the product of its length and width. We are given the width as 12 feet, and the area as 240 ft², so we can find the length from ...
... A = L×W
... 240 ft² = L×(12 ft)
... 240 ft²/(12 ft) = L = 20 ft
Opposite sides of the rectangle are the same length, so the cost of fence for a side of a given length will be the sum of the costs of the opposites sides.
The 12 ft side has one segment that is $18 per foot, and one that is $15 per foot. For the 20 ft sides, both are $15 per foot. Then the total cost can be figured from ...
... (12 ft)·($18/ft + $15/ft) + (20 ft)·($15/ft +$15/ft) = 12·$33 +20·$30 = $996
The sample size is 124.
93 of them are opposed to new shopping center.
So,
n = 124
p =
The point estimate of the population proportion = p = 0.75
q = 1 - p = 0.25
Margin of error (E) can be calculated by:
Using the values, we get:
Therefore, the margin of error is approximately 0.06 or 6%.
93 of them are opposed to new shopping center.
So,
n = 124
p =
The point estimate of the population proportion = p = 0.75
q = 1 - p = 0.25
Margin of error (E) can be calculated by:
Using the values, we get:
Therefore, the margin of error is approximately 0.06 or 6%.
Answer:
Step-by-step explanation:
we know that
If CD is parallel to XZ
then
Triangle XYZ is similar to Triangle YCD
therefore
The ratio of their corresponding sides are equal
we have
CX=5\ units, CY=25\ units, YD=20\ units,
substitute the values