Question 12 (5 points) Which of the following steps indicates the distributive property when solving - 3(x +
2) = 21?
A) -3x+ 2 = 21
B) -3x - 6 = 21
C) -3x - 6 = 63
D) -3(x-2)/-3=21/3

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15