Answer:Robert's minimum age is 11 years.
Step-by-step explanation:
Let x represent George's age.
Let y represent Edward's age.
Let z represent Robert's age.
George is twice as old as Edward. It means that
x = 2y
Edward's age exceeds Robert's age by 4 years. It means that
z = y - 4
If the sum of the three ages is at least 56 years, it means that
x + y + z ≥ 56 - - - - - - - - - - 1
Substituting x = 2y and z = y - 4 into equation 1, it becomes
2y + y + y - 4 ≥ 56
4y - 4 ≥ 56
4y ≥ 56 + 4
y ≥ 60/4
y ≥ 15
z = y - 4 = 15 - 4
z ≥ 11
Step-by-step explanation:
Total area of merged figure = area of vertical rectangle + area of horizontal rectangle.
Answer:
5
Step-by-step explanation:
the median means the number in the middle so the number in the middle would be 5
Answer:
7.50 x = 35 Answer is around 4.6 hours
Step-by-step explanation:
Divide 35 by 7.50 to find the number of hours.
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