Answer:
91
Step-by-step explanation:
Rewrite the sides as ratios
s/28=78/24, solve for s
s/28=39/12
s=39/12*28
s=91
The inverse is found by interchanging x and y
f(x) = y
Multiply both sides by y + 1
x*(y + 1) = 2y - 3 Remove the brackets on the left
xy + x = 2y - 3 Subtract xy on both sides
x = 2y - xy - 3 Add 3 to both sides
x + 3 = 2y - xy Factor out y on the right. Use the inverse distributive law
x + 3 = y*(2 - x) Divide both sides by 2 - x
Answer:
um D
Step-by-step explanation:
∠P = 40°; ∠S = 140° answer
Step-by-step explanation:
Answer:
Daughter is 25, mother is 58
Step-by-step explanation:
Let m = age of mother now
Let d = age of daughter now
m - 14 = 4(d - 14)
m = 2(d + 4)
m - 14 = 4d - 56
m = 2d + 8
subtracting them gets
14 = -2d + 64
2d = 50.
d = 25
m = 58