Answer: It already tells you what DE= 60
Step-by-step explanation:
Since F is the midpoint of DE that means DF=FE
So create equation
When DF and FE is added your answer should equal DE
So you write the equation to find x and once x is found substitute your answer for x
subtract 12 on both sides 36-12= 24
subtract 2x on both sides 4x-2x=2x
divide 2 into both sides 24/2=12 x=12
4x12=48+12=60 2x12=24+36=60
Answer: d. 39.3 inches
Step-by-step explanation:
Given the measurement of central angle ( ) and the measure of radius (15 inches), the lenght of the intercepted arc in the circle can be calculated with the formula:
Where r represents the radius of the circle and the central angle.
Substituting and
into the formula
:
Answer:
$700
Step-by-step explanation:
Given that:
Cost of desktop PC 10 years ago = $6000
Cost of desktop PC 2 years ago = $300
Linear model applies.
To find the rate of decrease per year, we need to find the slope.
One quantity is cost of PC here and second quantity here is number of years.
So, the answer is:
There is a decrease of <em>$700 </em>per year.
OR
Rate of decrease per year is <em>$700</em>.