Answer:
A) 42.7 units
Step-by-step explanation:
Here we have to use formula to find the circumference of a circle.
Circumference of a circle = 2*π*r
The value of π = 3.14
Given: The radius of the circle = 6.8
Now plug in the given value and value of π in the formula.
The circumference of the circle = 2*3.14*6.8
C = 6.28*6.8
C = 42.7
Answer: A) 42.7 units
Thank you.
Answer:
Step-by-step explanation:
A combination is an arrangement where the order is not important. Mathematically, a combination is the number of different groups of "" elements that can be formed from an initial group of "" elements. It's calculated with the following formula:
Where:
In this case:
Therefore the number of ways that the disc jockey selction can be done is:
Answer:
B
Step-by-step explanation:
Two friends + Bud = 3 people
7/10 = 70%, or less than a full cake
D is more than a full cake so this cannot be the answer.
C is 3/4 which 75% for <em>each</em> person, but there is only 70% to begin with so this is impossible.
B is 1/4 for each person also known as 25% for each person. 25% × 3 people = 75% which is slightly over how much cake Bud has (70%).
A is 1/2 for each person, but there isn't enough cake to go around to give each person a half piece.
The soundest solution would be B. Since the problem calls for estimations, B gives about 25% to each person, totaling to 75% after 3 people. Although we only have 70%, we are only estimating. A 5% difference is a good estimate.
Answer:
Step-by-step explanation:
1.
(-2,0) (0,-7) y2-y1
-----------------
x2-x1
-7-0= -7
0- (-2)= 2 ------>>> -7/2 =m or slope
2.
y= -7/2x+b to find b u plug in one pair of coordinates for example (-2,0)
and use inverse properties to find b
0 = -7/2(-2) + b
14/2 = 7
0= 7+b
-7 -7
-----------
-7=b
3.
y=-7/2x-7