36.64-21=15.64
15.64-6.14=9.5
The answer is she made $9.50 worth in local calls last month
Answer:
you have y so i will guess u mean x your answer for x will be
Step-by-step explanation:
since 33 is ur first number and 11 evenly goes into 33 it will be
Y 34
Y= ----- SUBTRACTED BY -------
33 11
<h2>
Y EQUALS Y OVER 33 MINOUS 34OVER 11</h2>
Multiply $1.50 and 60%, which will give you 0.9. now multiply $1.50 and 0.9 and that'll give you$1.35. lastly, add $1.50 and $1.35 and that'll give you the answer which is $2.85.
Answer:
x = pi, 3pi, 5pi etc
x = -pi, -3pi, -5pi etc
Step-by-step explanation:
cos^2 x + 2 cos x + 1 = 0
replace cos x with m
m^2 + 2m +1 = 0
solve by factoring (this is a^2 +2ab+b^2 = (a+b)^2 where a =m and b=1)
(m+1)^2=0
take the square root of each side
m+1 =0
m=-1
now replace m with cos x
cos x = -1
take arccos of each side
arccos cos x = arccos (-1)
x = pi, 3pi, 5pi etc
