Answer:
The original price of the shoes is $68.
Answer:
x = 10
Step-by-step explanation:
28/20 = 1.4
4x+2/3x = 1.4
4x+2/3x = 14/10
40x+20 = 42x
40x-42x = -20
-2x = -20
-x = -20/2
-x = -10
x = 10
Answer:
644 cm^2
Step-by-step explanation:
10*7*2+12*7*2+12*10=140+168+120=428
10*12-3*3=111
428+111=539
8*3*4+3*3=96+9=105
539+105=644
Answer:
Step 4
Step-by-step explanation:
Step 4 was incorrect
- Square root both sides must take 16 under root as well but it is missed
- It should have 4 instead of 16
Answer:
a. 10.2 in²/in
10.02 in²/in
b. 10 in²/in
Step-by-step explanation:
The area of a square is given by the following function:
The average rate of change between two points a and b is:
a. For x = 5 and 5.2:
For x = 5 and 5.02
b. The instantaneous rate of change in area with respect to x is given by:
For x = 5