Mr. Anderson drove 168 miles in 3 1/2 hours. He then drove the next 2 1/4 hours at a rate of 5 miles an hour faster than the first rate. How many miles did Mr. Anderson drive during 5 3/4 hours? (Middle school)
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First distance = 168 miles; time was 3.5 hours. Rate was 48 mph.
5 miles per hour faster than that was 53 mph.
Second distance = (2 1/4 hours)*(53 mph) = 119.25 miles
Total distance driven in those 5 3/4 hours: 168 mi + 119.25 mi = 287.25 mi
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The quadratic function f(x) = x² - 5x + 12 has a parabolic graph that opens upwards. It passes through the point (0, 12) and does not contain the point (20, -8).
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You can't. There are an infinite number of different parallelograms,
with different dimensions, that all have area of 96 square miles.
Knowing the area doesn't tell you the dimensions.
Here are a few parallelograms with areas of 96 square miles:
-- square, every side 4√6 miles long
-- rectangle, 12 miles long, 8 miles wide
-- parallelogram, base=32 miles, height=3 miles
There are an infinite number of others.
plz help!!
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Positive 8 and negative 8 both are.
because 8²=64 and (-8)²=64