Answer:
4
Step-by-step explanation:
20 percent is 1/5. 1/5 of 20 is 4.
C, Reflection across Y = X
99.9+0.9=100.8 degrees fahrenheit
99.9-0.9+99 degrees fahrenheit
The temperature can be between 99 and 100.8 degrees Fahrenheit.
100.8-99=1.8degrees (range)
99≤T≥100.8
The complement of an angle is 90 minus the angle, or
90 - x = complement angle
if x is 18 more than 3 times it's complement, then
x = 3(complement angle) + 18
We can substitute "90 - x" for the "complement angle" in the second equation:
x = 3(90 - x) + 18
distribute the 3 to the 90 and the x
x = 270 - 3x + 18
add 3x to both sides
4x = 270 - 18
4x = 252
x = 63
the measure of angle x is 63 degrees
