Answer:
Actual Perimeter = 100 km
Actual Area = 625 km²
Step-by-step explanation:
A scale drawing of a square has a side length of 5 millimeters.
The drawing has a scale of 1 mm : 5 km (which represents 1 mm is equal to 5 km)
We need to find the actual measurement of 5 mm square on scale.
1 mm = 5 km
5 mm = 5 × 5 km
= 25 km
The actual length of the side of square is 25 km
Now, we find the perimeter and area of the square.
= 4 × 25
= 100 km
= 25 × 25
= 625 km²
Hence, The actual perimeter is 100 km and area of the square is 625 km²
B. y=6x-48
C. y=-12x-42
D. y=-12x-54
How much does a bottle of water cost?
How much does a gallon of milk cost?
Answer:
Cost of a snack size bag of chips = $0.8
Cost of a water bottle = $1.6
Cost of a gallon of milk = $3.4
Step-by-step explanation:
Let the cost of water bottle = $a
Cost of 1 gallon milk = $b
and cost of 1 bag of chips = $c
So, cost of 4 gallons of milk, 6 bottles of water and 5 bags of chips = $(4b + 6a + 5c)
4b + 6a + 5c = 27.2 -----(1)
Cost of one water bottle = 2 × cost of one bag of chips
a = 2c -----(2)
A gallon of milk = cost of water bottle + $1.80
b = a + 1.8
From equation (2)
b = 2c + 1.8 -----(3)
Now we substitute these values from equations (2) and (3) in equation (1)
4(2c + 1.8) + 6(2c) + 5c = 27.2
8c + 7.2 + 12c + 5c = 27.2
25c = 27.2 - 7.2
c =
c = $0.8
From equation (2)
a = 2×0.8
a = $1.6
From equation (3)
b = 2(0.8) + 1.8
b = 1.6 + 1.8
b = $3.4
Therefore, cost of a snack size bag of chips = $0.8
Cost of a water bottle = $1.6
Cost of a gallon of milk = $3.4
4 5/8 - 1 1/8=____