Answer:
Ben is 20 years old.
Step-by-step explanation:
Ben: x + 5
Kelsey: x
x + 5 + x = 3x - 10
2x + 5 = 3x - 10
-1x = -15
x = 15
Kelsey is 15 years old, Ben is 20 years old.
Answer:
So what should we figure out?
Step-by-step explanation:
Answer:
8 x 10^5
Step-by-step explanation:
Answer:
11v^2 - 8v + 1
Step-by-step explanation:
(4v^2 - 5v - 1) + (7v^2 - 3v + 2)
open brackets
4v^2 - 5v - 1 + 7v^2 - 3v + 2
place like terms together (remember signs remain same )
4v^2 + 7v^2 - 5v - 3v + 2 - 1
add or subtract like terms
11v^2 - 8v + 1
Answer:
c= 61m
Step-by-step explanation:
using Pythagoras theorem, sin33°=a/c
sin33°=33/c
using tables, sin33°=0.5446
substituting,
0.5446=33/c
cross multiply
0.5446*c=33
divide both sides by 0.5446
c=33/0.5446
c=60.5949321
c=61m (to the nearest whole number)