Answer:
To see if multiple ratios are proportional, you can write them as fractions, reduce them and compare them. If the reduced scores are all the same, you have a proportion.
205
Step-by-step explanation:
Exact form: √ 29
Decimal form: 5.38516480
20.7
cos 51 = 13/x
x = 13/cos 51
= 20.7
4(x+3)=2(4x+8+2x+3)
4x+12=8x+16+4x+6
-8x=10
x=-5/4
x+3=7/4
