Complementary angles add to 90 degrees. This means that 65 + x = 90, so x = 90 - 65 = 25.
Step-by-step explanation:
x = father's age now
y = son's age now
x = 2y + 10
x - 20 = 5(y - 20) = 5y - 100
using the first in the second equation :
2y + 10 - 20 = 5y - 100
-10 = 3y - 100
90 = 3y
y = 30
x = 2y + 10 = 2×30 + 10 = 60 + 10 = 70
the father is now 70 years old, the son now 30 years old.
Answer:
A, B, D
Step-by-step explanation:
Use the LCM to help...
Answer:
4 children
Step-by-step explanation:
Multiply the total amount of children by the percentage of children who voted to have tacos for lunch.
20% -> 0.2
20 * 0.2 = 4
