The histogram shows the speeds, in miles per hour, of downhill skiers during a competition. Estimate the mean of the data set displayed in the histogram. If necessary, round your answer to the nearest tenth.
9
8
7
Frequency
3
2
1
40-49
70-79
30-39
Speed (mi/h)
50-59
60-69
The mean speed is about
mi/h.

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!

3+x

step-by-step explanation:

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).