39 students have a pet because 130 times .30 which represents thirty percent gives you the answer
Given:
(a+10) and (a+20) are supplementary
To find:
Each angle
Steps:
if 2 angles are supplementary that means they add up to 180°
(a + 10) + (a + 20) = 180
a + 10 + a + 20 = 180
2a + 30 = 180
2a = 180 - 30
2a = 150
a = 150/2
a = 75°
Now let's find value of each angle,
a + 10 = 75 + 10
= 85°
a + 20 = 75 + 20
= 95°
Therefore, the value of each angle is 85° and 95° respectively
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(-4)(-2)= 8
8(-5)= -40
Answer: -40
Step-by-step explanation: the tangent is 8/6 because it is the opposite (8) over the adjacent (6)
Answer:
The population of a statistical survey is chose at random, so it's not believed to be biased.
