We know that a = b and c = 30
Since b + 30 = 90, we know b = 60.
That means a = 60
a = 60
b = 60
c = 30
This is really hard but i think it is about 33 cents per pound of banannas
Answer:
Elizabeth spent 17.5 hours and her sister spent 12.5 hours.
Step-by-step explanation:
Let x be the number of hours that Elizabeth shoveled and y be the number of hours that her sister shoveled.
Number of hours they shoveled = 30
So, x + y = 30 or
y = 30 - x
Jenna charged $12 per sidewalk.
So, her total earnings = 12x
Her sister charged $11 per sidewalk.
So, her total earnings = 11y.
Their total income = $347.50.
So, 12x + 11y = 347.5
Substitute y = 30 - x,
12x + 11(30 - x) = 347.5
12x + 330 - 11x = 347.5
x + 330 = 347.5
x = 347.5 - 330
x = 17.5 and
y = 30 - x = 30 - 17.5 = 12.5.
Hence, Elizabeth spent 17.5 hours and her sister spent 12.5 hours.
On this problem the answer will be 2X-3y= -12
Answer:
the dimensions of the drawing scale are
60 units by 20 units
Step-by-step explanation:
Given:
A game room has a floor that is 75 feet by 20 feet
A scale drawing of the floor on grid paper uses a scale of 4 units:5 feet
The length of the drawing scale is
Let actual Length feet.
actual width feet.
Drawing
Put the actual length in above equation.
Drawing
Drawing
Drawing
The drawing length is 60 units.
For drawing width
Drawing
Put the actual width in above equation.
Drawing
Drawing
Drawing
The drawing width is 16 units.
Therefore, the dimensions of the drawing scale are
60 units by 16 units