3 years ago

Question 1 and 2 have the same question help please!!

Mathematics

1 answer:

Hatshy [7]3 years ago

8 0

Answer:

1st Circle

Radius = 9

Diameter = 18

Circumference = 2 × $\pi$ × r = 2 × 3.14 × 9 = 56.52

2nd Circle

Radius = 14

Diameter = 28

Circumference = 2 × $\pi$ × r = 2 × 3.14 × 14 = 87.92

You might be interested in

Which fraction is the largest 5/7 7/10 10/13 show how u worked out the answer

Ronch [10]

Answer:

$3.1/13$

Step-by-step explanation:

$1.5/7 =0.214286$

$2.7/10=0.27$

$3.1/13 =0.238462$

5 0

3 years ago

The sum of the first n terms of an arithmetic sequence is n/2(4n + 20).

lesantik [10]

Answer:

(a).

$S_{n} = \frac{n}{2} (4n + 20) \\ \\S _{n - 1} = \frac{(n - 1)}{2} (4n - 4 + 20) \\ \\ S _{n - 1} = \frac{(n - 1)}{2} (4n + 16) \\ \\S _{n - 1} = \frac{(n - 1)(4n + 16)}{2} \\ \\ { \boxed{S _{n - 1} = {2 {n}^{2} + 6n - 8}}} \\$

(b).

from general equation:

$S _{n - 1} = \frac{(n - 1)}{2} (4n + 16)$

first term is 4n

common difference:

$16 = \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d = \frac{16}{n - 2}$

8 0

3 years ago

11.

Naya [18.7K]

7600 is the most it can hold and the least ig gonna be 1

8 0

2 years ago

PLSSSS HELP WILL GIVE BRAINLIEST<br> ILL FRIEND U<br> ILL GIVE 5 STARS AND A THANKS

Andrei [34K]

Answer:

12 / (-15) goes in the first box.

12 / 15 goes into the second box

15 / -12 goes into the third box

and 15 / 12 goes into the fourth box

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

A brownie recipe calls 1 2/3 cups of nuts. Ethan wants to use only half of this amount.

7nadin3 [17]

c. 5/6 cups

Step-by-step explanation:

1 2/3 = 5/3

5/3= 1.666

1.66÷2= 0.833

When we divide. the number should equal 0.833

8/3= 2.66 nope

10/3= 3.33 nope

5/6= 0.833 yes

6/5= 1.2 nope

3 0

2 years ago