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Phoenix [80]
3 years ago
11

If the circumference of a circle is 13 pi, what is the radius of the circle?

Mathematics
1 answer:
gavmur [86]3 years ago
7 0

Answer:

r ≈ 2.07

Step-by-step explanation:

Using the formula

C=2πr

Solving for r

r= C/2π = 13/2π ≈ 2.06901

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Sam made $210.00 last week. If he worked 35 hours, how much is he paid for one hour of work? Answer: dollars per hour.
timama [110]

Answer:

$6 Dollars Per Hour

Step-by-step explanation:

210/35=6

8 0
3 years ago
Sherman has two sequences . The first sequence is described by the explicit rule f(n) = 15n + 4 and the second sequence is descr
Viktor [21]

Answer:

Step-by-step explanation:

Given the explicit function as

f(n) = 15n+4

The first term of the sequence is at when n= 1

f(1) = 15(1)+4

f(1) = 19

a = 19

Common difference d = f(2)-f(1)

f(2) = 15(2)+4

f(2) = 34

d = 34-19

d = 15

Sum of nth term of an AP = n/2{2a+(n-1)d}

S20 = 20/2{2(19)+(20-1)15)

S20 = 10(38+19(15))

S20 = 10(38+285)

S20 = 10(323)

S20 = 3230.

Sum of the 20th term is 3230

For the explicit function

f(n) = 4n+15

f(1) = 4(1)+15

f(1) = 19

a = 19

Common difference d = f(2)-f(1)

f(2) = 4(2)+15

f(2) = 23

d = 23-19

d = 4

Sum of nth term of an AP = n/2{2a+(n-1)d}

S20 = 20/2{2(19)+(20-1)4)

S20 = 10(38+19(4))

S20 = 10(38+76)

S20 = 10(114)

S20 = 1140

Sum of the 20th terms is 1140

7 0
3 years ago
What is the area, in square units, of the polygon shown here?
WITCHER [35]
You just need to break it into parts. The first rectangle is the tall one. To find the area of this one, just multiply the tall side by the short side on top.

8 x 2 = 16

The second rectangle is the long one on the bottom. If the whole bottom side is 5 units, then you need to subtract 2 from that. 

3 x 1 = 3

16 + 3 = 19 units, so the area of the entire shape would be 19 units^2. Hope this helps! :)

~Ash
5 0
3 years ago
Read 2 more answers
Betty picks 4 random marbles from the bowl containing 3 white, 4 yellow, and 5 blue marbles
olasank [31]
There are 12 marbles in total in the bowl.
From this bowl, we will choose 4 marbles at random.
That's 12C4 or (12*11*10*9) or 11,880 ways

Out of this, what is the probability that there is exactly 1 blue marble.
There are 5 blue balls but only 1 is selected, 5C1 ways
The rest except blue calls are 7, but only 3 slots are left, 7C3 ways

The probably of exactly 1 blue of 4 marbles is then 5C1*7C3/12C4 = 1050/11,880 = 0.0884 or 8.84%

Hope this helps:) would appericate brainliest thanks

4 0
3 years ago
Read 2 more answers
There are 16 people. Each person is broken down into the colors they prefer, the shades they prefer, and the tertiary gradients
Yuki888 [10]

Answer:

There are 69120 total combinations.

Step-by-step explanation:

To find the total number of combinations, we multiply all these values. So

16 people

18 colors

12 shades

20 tertiary gradients.

How many combinations are there total?

16*18*12*20 = 69120

There are 69120 total combinations.

8 0
2 years ago
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