∠A and ∠
B
∠B are supplementary angles. If m
∠
A
=
(
3
x
−
12
)
∘
∠A=(3x−12)
∘
and m
∠
B
=
(
4
x
−
25
)
∘
∠B=(4x−25)
∘
, then find the measure of
∠
B
∠B

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

17 in long 1.3 ft wide and 8in high what is the volume

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth