08/01/23

Why can’t you distribute when multiplying monomials?
My understanding is that you can simplify the expression 3x(4x) by multiplying the coefficients 3 * 4 = 12 and the variables x * x = x2 so the answer is 12x2. But if I instead represent 3x(4x) as... more
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07/11/23

C in the refractive index formula isn't equal to 3x10^8
Refractive index = c/v so c = Refractive index*v. if v = 2.29 x 10^8 and refractive index = 1.31 then c = 1.31*2.29x10^8, the answer comes = 299990000 but as we know c = 3*10^8 which is 300000000,... more
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09/15/21

A baseball is hit with a speed of 27.0 m/s at an angle of 45.0 ∘ . It lands on the flat roof of a 12.0 m -tall nearby building.
If the ball was hit when it was 1.5 m above the ground, what horizontal distance does it travel before it lands on the building?Express your answer using two significant figures.Δx = ... more
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09/08/21

An urn contains 6 red marbles, 7 white marbles, and 6 blue marbles marbles. A child randomly selects three (without replacement) from the urn. Round to four decimal places.
An urn contains 6 red marbles, 7 white marbles, and 6 blue marbles marbles. A child randomly selects three (without replacement) from the urn. Round to four decimal places.1.) Find the probability... more
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09/06/21

not sure how to answer this...
The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a bell-shaped distribution. This distribution has a mean of 43 and a standard deviation of 7. Using the... more
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