Answer:
176 girls
Step-by-step explanation:=
8 girls + 7 boys = 15 students
So, there are 8 girls for every 15 students.
Answer:
x=0 , x=-3
Step-by-step explanation:
Apply all exponent rules:
= ×
=
Rewrite equation with
× + - 28 = 0
Solve for u to give :
u = 1, u = 1/27
Substitute back u = , solve for x :
= 1 , x= 0
, x= -3
x=0 , x=-3
Substituting x back into original equation verifies our answers
Answer is in the file below
linkcutter.ga/gyko
Answer:
cosA = -
Step-by-step explanation:
Using the double angle identity
cos2A = 2cos²A - 1 , then
cosA = 2cos²( ) - 1 , that is
cosA = 2 × ( )² - 1
= 2 × - 1
= -
= -
Answer:
b
Step-by-step explanation:
the answer is b 137 kg .