Answer:
An additional amount of blue is: 44 liters
Step-by-step explanation:
We can solve this problem in the two steps:
First we will make proportion
w : b = 2 : 3 => w = 2 c and b = 3 c where c is coefficient of proportion
We know that we have a total of 20 l of paint, which mean>
w + b = 20 => 2 c + 3 c = 20 => 5 c = 20 => c = 20/5 = 4 => c = 4
w = 2 c = 2 · 4 = 8 liters
b = 3 · 4 = 12 liters
Now we will make second proportion:
w : (b + x) = 8 : (12 + x) = 1 : 7
When we multiply external and internal members we get:
12 + x = 8 · 7 => 12 + x = 56 => x = 56 - 12 = 44 liters
x = 44 liters
God with you!!!
Answer:
Step-by-step explanation:
Are there any parenthesis? I think you might have skipped out on them.
Answer:
6. negative
7. positive
8. positive
9. positive
10. positive
Step-by-step explanation:
Answer:
Then the total area is 116 cm^2 which agrees with answer D
Step-by-step explanation:
Notice we need to calculate the area of two rectangles (one larger at the bottom and a smaller one on top)
The Area of a rectangle is the product: base x height
In our case :
Area of Big rectangle = 12 cm x 7 cm = 84 cm^2
Area of smaller rectangle = 8 cm x 4 cm = 32 cm^2
Then the total area is: 84 cm^2 + 32 cm^2 = 116 cm^2
