5(2x - 4) = 45
5(2x) - 5(4) = 45
10x - 20 = 45
10x = 45 + 20
10x = 65
x = 65/10
x = 13/ 2
Thus, x is equal to 13/2
Answer:
the slope it 3 (:
Step-by-step explanation:
for one on the x axis it goes up three on the y axis
Y = mx + b
Where m is the slope and b is the y-intercept
As you can already see it passes through the origin so b (the y-intercept) is (x, 0)
And the slope were it’s rise/run so it goes up 2.5 units and to the right 1 unit so it’s 2.5/1 = 2.5
m = 2.5
Remark
Writing down the givens for these questions is almost a command. You must know which equation of the big 4 to use. The givens + what you want to find will determine the equation.
Givens
vi = 30.7 km/hr = 30.7 km/hr *[1000m/1km]*[1hr/3600sec] = 8.52m/sec
vf = 120 km/hr = 120 km/hr * [1000 m/1 km]*[1h/3600 sec] = 33.3 m/s
t = 4.9 seconds
d = ???
Formula
d = (vi + vf)*t/2
Solve
d = ( 33.3+8.52 )*4.9/2
d = (41.85333)*4.9/2
d = 205.02/2
d = 102.51 m<<<Answer
Answer:
x<-3
Step-by-step explanation:
4+8x<-20
4+8x-4<-20-4
8x<-24
8x/8 < -24/8
x<-3
