Answer:
Step-by-step explanation:
-15.4b + 13 = 9b-41.9
-15.4b-9b = -41.9 - 13
-24.4b= -54.9
divide both side by -24.4
-24.4b/-24.4 = -54.9/-24.4
minus divide by (-)
b= 2.25
Answer:
5X - 10
Step-by-step explanation:
Sarah had X
Then, Rachael had 4X
And, Addie had X - 10
Total dollar = X + 4X + X - 10
= 5X - 10
( pie over 2 - x)
Because we know that cos (pie over 2 ) =0 and sin (pie over 2) = 1
So we get
Sin (pie over 2 -x) =cos(x)
Answer:what lololololololololol
Answer:
I will do a step by step explanation to help you.
First, subtract 16 from 31 so you can simplify what you need to find. We will call the unknown number X. So 5x = 15
15/5 = 3 so X = 3
Lets plug in X
3 x 5 + 16 = 31
Makes sense!
Hope this helps
