Answer:
75%
step-by-step explanation:
so if 7 were girls we would subtract to find the number of boys
28 - 7
21 boys
100% = 28
x% = 21
100%/x% = 28\21
x = 75
Answer:
A
Step-by-step explanation:
We require to find ∠ A
Subtract the sum of the given angles from 180
∠ A = 180° - (85 + 53)° = 180° - 138° = 42°
Using the Sine rule in Δ ABC, that is
= 
, that is
= ( cross- multiply )
AC × sin42° = 85 × sin85° ( divide both sides by sin42° )
AC = 
≈ 126.6
Answer:
Step-by-step explanation: first you have to add 5 and 5 which is 10 and then add 8 which = 18 or if its timesing its 5 times 5 = 25 and 25 times 8 = 200 hope it helps ( the answer is probably the adding one kk)
Answer:
1/36
Step-by-step explanation:
hope this helps:0
Answer: The inverse of the linear function f(x)=2x+1 is f^(-1) (x) = (1/2)x-1/2
Solution
f(x)=2x+1
y=f(x)
y=2x+1
Isolating x: Subtracting 1 both sides of the equation:
y-1=2x+1-1
y-1=2x
Multiplying both sides of the equation by 1/2:
(1/2)(y-1)=(1/2)2x
(1/2)y-1/2=x
x=(1/2)y-1/2
Changing "x" by "f^(-1) (x)" and "y" by "x":
f^(-1) (x) = (1/2)x-1/2
