Answer:
The terms are x, -4, 3 and -5x.
The like terms are x and -5x, as well as -4 and 3.
Step-by-step explanation:
Like terms are terms that have the same variables and powers.
Factor the equation:
(x-7)(x+4)
Solve for X:
X-7=0 x+4=0
X=7 x=-4
A zero is when the function crosses the x-axis which is solved by setting the function equal to zero.
Answer:
29.4 minutes represents the 60th percentile
Step-by-step explanation:
Given : The times for running a 5K for a local charity event are Normally distributed, with a mean time of 28 minutes and standard deviation of 5.4 minutes.
To Find : Which time represents the 60th percentile?
19.6 minutes
26.6 minutes
29.4 minutes
36.4 minutes
Solution:
time represents the 60th percentile
Means 60 % data = 0.6 below this
from z table , z score for this = 0.253
z score = ( Value - Mean ) / SD
=> 0.253 = ( Value - 28 ) /5.4
=> 1.3662 = Value - 28
=> Value = 29.3662
=> Value = 29.4
29.4 minutes represents the 60th percentile
Answer:
-11.5
Step-by-step explanation:
4(x + 12) = 2
Distribute
4x + 48 = 2
Subtract 48 from both sides
4x = -46
Divide both sides by 4
x = -11.5