Answer:
C and D
Step-by-step explanation:
1
The arc length is calculated as
arc = circumference of circle × fraction of circle
= 2πr ×
= 2π × 10 × = = cm → C
-----------------------------------------------------
2
The area (A) of a sector is calculated as
A = area of circle × fraction of circle
= πr² ×
= π × 10² × = = cm² → D
Answer: $556.50
Step-by-step explanation: 6% of 525 is 31.5 so 525 + 31.5 = 556.50$
Answer:
a. shown below
b. 9x+14
Step-by-step explanation:
a. (on the bottom)
b. (3x+7)(3x+2)
multiply the terms:
9x+14
thats the area
Answer:
linear
Step-by-step explanation:
The easiest (if not the only) way to solve this, is to check whether the slope at each point stays constant, or not. And in general, see how the rate rate of change evolves. In other words:
- 6.5 / 5 = 1.3
- 13 / 10 = 1.3
- 19.5 / 15 = 1.3
- 26 / 20 = 1.3
- 32.5 / 25 = 1.3
- 39 / 30 = 1.3
As you can see " in every step to the right, the function goes up by 1.3 " --> constant
So, the function is linear
We'll say that months = n.
Make a set of the DVD's sold:
In month 1, Aaron sold 20 DVDs. There is no data for month 0.
There is a constant increase of 30 DVDs every month. We can make an equation out of this to fit this data set:
a represents the DVDs made.
We need to subtract 10 in this equation, as the starting point is 20, and the increase of 30 is different from the increase from n = 0 to n = 1.
We are looking for the amount of DVDs Aaron sold on the 13th month. Plug 13 into the equation:
The predicted number of DVDs Aaron will sell on the 13th month is
380.