Answer:
<h3>
7x</h3>
Step-by-step explanation:
5x + 2x = (5 + 2)x = 7x..
<span>1. Two angles are complementary. One angle measures 50°. What is the measure of the other angle?
</span>complementary, sum of the angles = 90
<span>
so 90 -</span> 50 = 40
<span>
answer is
C.40°
2.Two angles are supplementary. One angle measurement is 30° more than the other. What is the measure of the smaller angle?
</span>supplementary, sum of the angles = 180
One angle measurement is 30° more than the other.
so both angles are 75 and 105
105 is 30 more than the other angel of 75
answer
measure of the smaller angle is 75
so it's D.75°
Answer:
a. yˆ=38,000+2500x
d. yˆ=38,000−1500x
Step-by-step explanation:
The least squares regression line for the population change of a small country has the following format:
In which a is the initial population and b is the number of habitants for which the population increases/decreases a year.
Let's see each case
a. yˆ=38,000+2500x
The population starts at 38000 and increases by 2500 a year. This is a feasible assumption.
b. yˆ=38,000−3500x
The population starts at 38000 and increases by 3500 a year. By the year 2015, the population will be negative. This is not a feasible assumption.
c. yˆ=−38,000+2500x
The population cannot start at a negative value. So this is not a feasible assumption.
d. yˆ=38,000−1500x
The population starts at 38000 and decreases by 1500 a year. This is a feasible assumption.