180-40=140
140/2=70
angle RST=70
Answer:
Step-by-step explanation:
Use the nth tern equation of the AP
We have
- and
Find the value of d
- 25 = - 2 + (10 - 1)d
- 25 + 2 = 9d
- 27 = 9d
- d = 27/9
- d = 3
Correct choice is a)
Answer:
16
Step-by-step explanation:
Step 1: Write out expression
a²
a = -4
Step 2: Substitute
(-4)²
Step 3: Evaluate
16
228 divide by 6 = 38
38 miles per hour