B none of the choices are correct
A square has four 90° angles. So:
15x-30=90 add 30 to both sides
15x=120 divide both sides by 15
x=8°
Answer:
The average rate of change is -0.034 which means that the decrease is -0.034 in the cost of per print per year
Step-by-step explanation:
Given that
Price of print in 2002 = p1 =$0.50
Price of print in 2013 = p2 =$0.13
y1 = 2002
y2 = 2013
The rate of change is given by the formula:

Here decrease is the change in price and run is the difference in years.
Mathematically, it can be written as:

Putting the values

Hence,
The average rate of change is -0.034 which means that the decrease is -0.034 in the cost of per print per year
calculate area of wall
20 x 1.5 = 30 square meters
now calculate area of 1 block
12 x 18 =216 square centimeters
convert cm to meters 1 cm^2 = 0.0001m^2
so 216 x 0.0001 = 0.0216 sq meter for 1 block
divide area of wall by area of block
30/0.0216 = 1388.88 so 1389 blocks are required.
Answer:
Unitary cost= $80
Step-by-step explanation:
Giving the following information:
Total manufacturing cost= $40,000
Number of units= 500
<u>To calculate the unitary cost, we need to use the following formula:</u>
Unitary cost= Total manufacturing cost / number of units
Unitary cost= 40,000 / 500
Unitary cost= $80