Answer:
10 ft
Step-by-step explanation:
Square root of 100 = 10
Write an equation system based on the problem
"Agatha is five times older than her son, Bob" could be written as:
a = 5b.......(first equation)
"Three years ago, she was nine times older" could be written as:
a - 3 = 9(b - 3)......(second equation)
Solve the equation system
To find the value of b, substitute 5b as a to the second equation
a - 3 = 9(b - 3)
5b - 3 = 9(b - 3)
5b - 3 = 9b - 27
5b - 9b = -27 + 3
-4b = -24
b = -24/-4
b = 6
Her son, Bob, is 6 years old
To find Agatha's age, substitute the value of b to the first equation
a = 5b
a = 5 × 6
a = 30
Agatha is 30 years old
Answer:
I think 3.
Step-by-step explanation:
3*4=12 near 10
Answer:
D
Step-by-step explanation:
please i want brainliest
If it’s just 40 in total for the whole session , $40 + (30 x (number of students) = ?
But if it’s 40 per student as well then (40 x 30) x (number of students) = ?
