8 more red circles because if you have 9 red circles and 3 blue ones the ratio would be 9:3 and if you simplify that down to 3:1 that’s the answer. So you would need to add 8 more red circles
Answer: 410 square km
Step-by-step explanation:
The area of each of the triangles with their base on the 10 km side is 
, so their combined area is 
.
The area of each of the triangles with their base on the 12 km side is 
, so their combined area is 
.
The area of the bottom rectangular face is 
.
So, the total surface area is 
Answer:
I think 37.5
Step-by-step explanation:
I think 37.5 because 40% of x=75 is 30, and 50% of 75 is 37.5, I suppose!
SORRY IF WRONG ;c
(Edit) wAIT tHE AaNSWER HAS TO BE A PERCENTAGE?
Well then idk
Let's simplify step-by-step.
2(x+7)+3(x+1)
Distribute:
=(2)(x)+(2)(7)+(3)(x)+(3)(1)
=2x+14+3x+3
Combine Like Terms:
=2x+14+3x+3
=(2x+3x)+(14+3)
=5x+17
your answer is 5x+17
Answer: 15
(2)/[(2)/(15)]= 2*15/2= 15
