Answer: definitely B
Step-by-step explanation: if you buy the balloons for less than you sell, you must subtract what you pay for from the number you are selling it for, but we don't know how many he sold YET so we have a letter filling it in till we do
Step-by-step explanation:
u(w(8))
sqrt (8+8)= sqrt(16)= 4
u(4)= (4)^2+9= 16+9= 25
w(u(8))=
(8)^2+9= 64+9= 73
w(73)= sqrt 73
(b)
The 50 degree angle and angle b are vertical angles, which means they are congruent.
The 50 degree angle and angle c are a linear pair, which means that they are supplementary/add up to 180 degrees.
Angles a and c are vertical angles, which means they are congruent.
a = 130
b = 50
c = 130
(c)
The 90 degree angle and angle b are vertical angles, which means they are congruent.
The 50 degree angle and angle c are vertical angles, which means they are congruent.
The 50 degree angle, 90 degree angle, and angle d all form a line, which means that they are supplementary and add up to 180.
Angle d and angle a are vertical angles, which means they are congruent.
a = 40
b = 90
c = 50
d = 40
(e)
The measure of a circle is 360 degrees. These three angles form a circle, so therefore if we add them all up, they will equal 360 degrees.
3a + 4a + 5a = 360
12a = 360
a = 30
(f)
The measure of a circle is 360 degrees. These four angles form a circle, so therefore if we add them all up, they will equal 360 degrees.
3a + 4a + 5a + 6a = 360
18a = 360
a = 20
Hope this helps!! :)
Just add the fractions like 1/4 hours is 15 minutes, 1 3/8 is 11/8 that is 1 hour and 12,5 minutes then 1/2 hours is 30 minutes adding all together gives 1 hour and 57,5 minutes
