Answer:
The expressions for the payment made to Mary are,
(Monday) 90 = 15m + b
(Tuesday) 62 = 8m + b
where m and b are the fee per student and the base fee, respectively. Solving for m and b, the values are 4 and 30.
The equation that represents Mary's earning is
y = 4x + 30
For 20 students,
y = 4(20) + 30 = 110
For Lisa's earnings,
y = 8x + 15
Substituting 20,
y =8(20) + 15 = 175
Thus, Lisa would earn more than Mary by $65.
(Btw this is not my work, I got it from someone else on brainly and wanted to help lol)
Answer:
5/8 is it simplified
Step-by-step explanation:
Answer:
Did you copy this down correctly?
Step-by-step explanation:
b = .125 which is rational
a is irrational because the square root of a prime number is irrational.
If c = 225....
then adding 2 rational numbers = rational sum
But adding (or multiplying) an irrational number to a rational number = irrational number.
Answer:
Option 4
Step-by-step explanation:
Equating given length and width to the area :
- 8x(5x) = 490
- 40x² = 490
- x² = 490/40
- x² = 12.25
- x = 3.5
Finding the dimensions :
- length = 8x = 8(3.5) = 28 units
- width = 5x = 5(3.5) = 17.5 units
