Answer:
X=7 ST=11 RT=17
Step-by-step explanation:
RT=RS+ST. RS= 2(7)-8. ST=11
X+10=2x-8+11. =14-8=6. RT= x+10
X+10=2x+3. RS=6. 7+10=17
10=x+3. RT=17
X=7
9
21^2-19^2=80
sqaure root of 80 to the nearest 10th is
the answer here is number 4
D. 80 miles
1 × y = 20 × 4
y = 80
