The marked points on the graph show that the number of hot cocoas sold decreases by 6 when the temperature goes up by 6 degrees. That is, the line has a slope of -1. The y-intercept is 100, so the equation of the line can be written as ...

y = mx +b . . . . . line with slope m and y-intercept b

y = -x +100

Then for x = 42, the expected value of y is ...

y = -42 +100 = 58

Mei Mei can expect to sell 58 hot cocoas on a day when the high is 42°F.

5 0

2 years ago

In triangle ABC the measure of A is 33° and the measure of C is 90° . what is the measure of B

Masteriza [31]

Answer:

57°

Step-by-step explanation:

ALL angles in a triangle add up to 180°

SO, if we know the sum of two angles which is 123° (why: 33+90=123), all we have to do is subtract this number from 180 to get the measure of the 3rd angle. Which in this case is 57°

6 0

3 years ago