Answer:
7.065
Step-by-step explanation:
-
=
Multiply both sides by 8 to get t out of the fraction
t -
=
Simplify the numerators
t -
=
Divide the fractions
t - 6 = 4
Add 6 to both sides
t = 10
28 *4/7 = 16 in Mr Chang’s class
[sin(180-a) x cos(90-a) - 1]/cos(-a)
= [sin(a) x sin(a) - 1]/(-cos(a))
= [sin^2(a) -1]/(-cos(a))
= [-cos^2(a)]/(-cos(a))
= cos(a)
formula used
sin(180-a) = sin(a)
cos(90-a) = sin(a)
cos(-a) = -cos(a)
sin^2(a) + cos^2(a) = 1
all of these are easily proved by the unit circle. you might find someone to explain this. it will be very handy.
Answer:
The cost of the racquet is 
Step-by-step explanation:
Let
x-----> the cost of the racquet
we know that
The racquet represent the 100%
so
using proportion
