Answer:
well tbh, x will always just equal 1 unless it's next to another number.
Step-by-step explanation:
so the answer is x= 2 btw idk just in case ig
3 ( - x + 2x + 1) = x -1 ( add 1 and 2x together)
3 ( x + 1 ) = x- 1. ( -x and + 2x are like terms)
get rid of parentheses. 3x + 3 = x - 1
moved variable (x) to the left hand side and change its sign. 3x - x + 3 = -1 / 3x - x = 1 - 3
2x - 1 - 3
2x = - 4
x= -2
First, we find the time spent accelerating:
s = ut + 1/2 at²; u = 0
10 = 1/2 5t²
t = 2 seconds
Velocity at point B:
v = u + at; u = 0, a = 5 m/s², t = 2 s
v = (5)(2) = 10 m/s
Now, the same velocity is at C so we find the time decelerating to 0 in CD
v = u + at, v = 0, u = 10 m/s, a = -4 m/s²
0 = 10 - 4t
t = 2.5 seconds
Total time = time(AB) + time(BC) + time(CD)
20 = 2 + time(BC) + 2.5
time(BC) = 15.5 seconds
Distance = velocity x time
BC = 10 x 15.5
= 155 m
Answer:
3.5cm
Step-by-step explanation:
Vol=πr²h
Transposing for h,=vol÷πr²
where r=22/2=11cm and taking π=3.142
h=1331/(3.142×(11)²)=3.5cm
Answer:
Step-by-step explanation:-30x-15y+6
15.
You'd get this by multiplying the -10 by 3 then adding it to both sides. Then divide by 5.
