Answer:
the second one(20)
Step-by-step explanation:
If you pretend 20 is x, you solve the equation by pluging in x (20) into the equation and it gives you 70, 70 is what the big part is and 70+20 is 90, which is the size of a 90degree side.
4(20)-10
80-10
70
70+20=90
Need part b
Have a nice day
Answer:
1.) a= √50
2.) a = (10√3)/3
3.) a = 6
4.) a =√5
5.) a = (3√2)/2
6.) a =2
7.) a=12
8.) a= 3√3
9.) a= 6√2
10.) a= 2√3
11.) a= 2√2
12.) a=8
Step-by-step explanation:
30-60-90 triangles
hypotenuse = 2(short leg)
short leg = 1/2(hypotenuse)
long leg = short leg(√3)
short leg = long leg/√3
45-45-90 triangles
hypotneuse = leg(√2)
Multiply first, then add. 12 times 7 = 84. Then add 8. 84 + 8 = 92.
If 648 equals 54%, then 1200 equals 100%.
