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3 years ago

The chart below contains the results of a survey in which students were asked about their cell phone plan.

Mathematics

2 answers:

nata0808 [166]3 years ago

8 0

Answer:

16% To get the answer all you have to do is add.

nekit [7.7K]3 years ago

3 0

Answer:

Option (C)

Step-by-step explanation:

Students having phone plans with texting = Students with plan of voice and texting + Students with plan of voice, texting and data

= 12 + 4

= 16

Total number of students with different plans = 20 + 14 + 12 + 4

= 50

Percentage of students using phone plans with texting

= $\frac{\text{Students using plans with texting}}{\text{Total number of students surveyed}}\times 100$

= $\frac{16}{50}\times 100$

= 32%

Therefore, Option (C) will be the answer.

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MATH............................................................

stira [4]

Answer:

For A its 10 Feet because if each unit is 5 feet and there are 2 units then its 10 feet and then B is 35 because seven units means 5 x 7 then 35feet is the answer

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The sequence$$1,2,1,2,2,1,2,2,2,1,2,2,2,2,1,2,2,2,2,2,1,2,\dots$$consists of $1$'s separated by blocks of $2$'s with $n$ $2$'s i

kicyunya [14]

Consider the lengths of consecutive 1-2 blocks.

block 1 - 1, 2 - length 2

block 2 - 1, 2, 2 - length 3

block 3 - 1, 2, 2, 2 - length 4

block 4 - 1, 2, 2, 2, 2 - length 5

and so on.

Recall the formula for the sum of consecutive positive integers,

$\displaystyle \sum_{i=1}^j i = 1 + 2 + 3 + \cdots + j = \frac{j(j+1)}2 \implies \sum_{i=2}^j = \frac{j(j+1) - 2}2$

Now,

$1234 = \dfrac{j(j+1)-2}2 \implies 2470 = j(j+1) \implies j\approx49.2016$

which means that the 1234th term in the sequence occurs somewhere about 1/5 of the way through the 49th 1-2 block.

In the first 48 blocks, the sequence contains 48 copies of 1 and 1 + 2 + 3 + ... + 47 copies of 2, hence they make up a total of

$\displaystyle \sum_{i=1}^48 1 + \sum_{i=1}^{48} i = 48+\frac{48(48+1)}2 = 1224$

numbers, and their sum is

$\displaystyle \sum_{i=1}^{48} 1 + \sum_{i=1}^{48} 2i = 48 + 48(48+1) = 48\times50 = 2400$

This leaves us with the contribution of the first 10 terms in the 49th block, which consist of one 1 and nine 2s with a sum of $1+9\times2=19$ .

So, the sum of the first 1234 terms in the sequence is 2419.

8 0

2 years ago

SOMEONE PLEASE HELPPP!!!

erastova [34]

Answer: 6 hours

Step-by-step explanation:

You would first start by making 1 3/5 into a mixed fraction. Getting 8/5. Then you’d divide that by 3/4 and get 6/5. Which then you’d multiply it by 5 and get 6 hours.

6 0

3 years ago

Find the derivative of y= 1 / x

givi [52]

Answer:

dy/dx = -1/ $x^{2}$