Step-by-step explanation:
Sally mass = 70 kilograms
Dave mass = 170 pounds ≈ 77 kilograms
Sally's mass as a percentage of Dave's mass = (70/77)x100
Sally's mass as a percentage of Dave's mass ≈ 91 %
x = both 25 and 20 + up witch is 45
Answer:
15
Step-by-step explanation:
Opposite sides in a parallelogram are equal.
2x - 5 = x + 10
Subtract x and add 5 on both sides.
2x - x = 10 + 5
Combine like terms.
x = 15
