Ask question

Ask question

All categories

3 years ago

9

Kelly is selling magazine subscriptions as part of a school fundraiser during the first 72 days of the fundraiser kelly sold 56

subscriptions you kill me how many subscriptions with kelly sale in 216 day period

1 answer:

Anettt [7]3 years ago

3 0

Kelly sells 52 subscriptions every 72 days, therefore,

216 / 72 = 3.

52 * 3 = 156

Kelly sells 156 subscriptions every 216 days

You might be interested in

Do all number lines show only whole number

Lera25 [3.4K]

Answer:

no

Step-by-step explanation:

no because some numbers could be negative and most number lines also contain 0. whole numbers are positive, non decimal/fractional, real numbers

8 0

3 years ago

Calculate the arithmetic sequence in which a9=17 and the common difference is d=-2.1

jek_recluse [69]

Answer:

$S_{31}=71.3$

Step-by-step explanation:

The nth term of an arithmetic sequence is given by the formula,

$U_n=a_1+(n-1)d$

We were given that the 9th term is $17$ .

$\Rightarrow 17=a_1+(9-1)(-2.1)$

$\Rightarrow 17=a_1+(8)\times(-2.1)$

$\Rightarrow 17=a_1-\frac{84}{5}$

$\Rightarrow 17+\frac{84}{5}=a_1$

$\Rightarrow a_1=\frac{169}{5}$

The sum of the first n-terms is given by the formula,

$S_n=\frac{n}{2}(2a_1+(n-1)d)$

To find $S_{31}$ , we substitute $n=31$ , $a_1=\frac{169}{5}$ and $d=-2.1$ .

$\Rightarrow S_{31}=\frac{31}{2}(2(\frac{169}{5}+(31-1)(-2.1))$

$\Rightarrow S_{31}=\frac{31}{2}(2(\frac{169}{5}+(30)(-2.1))$

$\Rightarrow S_{31}=\frac{31}{2}(\frac{23}{5})$

$\Rightarrow S_{31}=\frac{713}{10}$

$\Rightarrow S_{31}=71.3$

The correct answer is D

8 0

3 years ago

Read 2 more answers

AN ice cream factory makes 230 quarts of ie cream in 2 hours. how many quarts could be made in 12 hours?what was the rate per da

Lana71 [14]

it makes 2760 per 12 hours

4 0

3 years ago

Estimate the value of 196 divided by 0.4999

mixer [17]

Answer:

392.1

Step-by-step explanation: just divide and round

3 0

3 years ago

Read 2 more answers

Help I was absent when she taught this

DedPeter [7]

Answer:

b

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers