Answer:
x=10
Step-by-step explanation:
these are similar triangles
8 12
------ = -----------
x+4 2x+1
using cross products
8* (2x+1) = 12(x+4)
distribute
16x + 8 = 12x+48
subtract 12x from each side
16x-12x +8 = 12x-12x+48
4x+8 = 48
subtract 8 from each side
4x+8-8 = 48-8
4x = 40
divide by 4
4x/4 = 40/x
x =10
A. 65/100 x 90/100
b. 58.5%
c. 65% for someone with brown hair and 10% for someone who is left handed. (If you’re talking about both then 6.5%)
The answer is in the snip
Alright, so we know that 1 inch is 16 feet on the model. The model that we have is 11.5 inches in length.
To figure this out, simply multiply 11.5 by 16, which equals 184.
This gives us a ratio of 11.5 : 184, which is the same as 1 : 16. You can also write proportions as fractions, so 11.5 / 184 and 1/16 are the same, both equaling 0.0625.
The final answer is 184 ft
