1. factor the following quadratic equation.
x^2+10x+21
a. (x+21)(x+1)
b.(x+5)(x+2)
c.(x+3)(x+7)
d.(x-3)(x-7)
2. factor the following quadratic expression.
x^2-11x+24
a.(x+6)(x+4)
b.(x-2)(x-12)
c.(x-1)(x-24)
d.(x-3)(x-8)
3. factor the following quadratic expression.
x^2+2x-8
a.(x+2)(x+4)
b.(x-2)(x-4)
c.(x-2)(x+4)
d.(x+2)(x-4)
4. factor the following quadratic expression.
a.(x+6)(x+6)
b.(x-6)(x-6)
c.(x-4)(x-9)
d.(x+9)(x+9)
5. factor the following quadratic expression.
x^2-81
a.(x+9)(x+9)
b.(x-9)(x+9)
c.(x-81)(x-1)
d.(x+81)(x-1)

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

It appears that people who are mildly obese are less active than leaner people. one study looked at the average number of minutes per day that people spend standing or walking. among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately normally distributed with mean 376 minutes and standard deviation 64 minutes. the mean number of minutes of daily activity for lean people is approximately normally distributed with mean 528 minutes and standard deviation 107 minutes. a researcher records the minutes of activity for an srs of 7 mildly obese people and an srs of 7 lean people. use z-scores rounded to two decimal places to answer the following: what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 420 minutes? what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 lean people exceeds 420 minutes?