Answer:
or 
Step-by-step explanation:
Given


Required
Find y

Substitute 


Collect like terms


Split the surd


Rationalize


Take LCM and add


or solve as:


Distance = rate*time, or
distance = (average speed)* time, so
average speed = distance/ time.
average speed = 205 mi / (3/12) h = 205 mi/ (1/4)h = 205*4 mi/h=
= 820 mi/h
It is looks to high for speed of the truck,
probably time should be 3.12 h,
then
average speed = 205 mi / (3.12) h ≈ 65.71 mi/h.
That looks close to real life.
Answer:
-14x+6
Step-by-step explanation:
-3(4x-2)= -2x = -14x+6
-3(4x -2) -2
-12x+6 -2x
1a. <
1b. <
1c. >
2a. >
2b. <
2c. >
3a. <
3b. <
3c. >
Answer:
x=5
Step-by-step explanation:
To find x, you need to divide 7 by the coefficient which is 1.4. 7/1.4=5