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mestny [16]
2 years ago
11

MATH HELP NEEDED PLEASE

Mathematics
1 answer:
Semmy [17]2 years ago
6 0

Answer:

Picture no working.

Step-by-step explanation:

Are no the answer :)

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Elapsed time 50 minutes.ending time 9:05 am find starting time
never [62]

Answer:

8:15 am

Step-by-step explanation:

Count back from 9:05 50 minutes. I did it in parts.

First, I went back 5 minutes:

9:05 am 50 minutes elapsed

9:00 am 45 minutes elapsed

Then I went back the rest of the 45 minutes

9:00 am 45 minutes elapsed

8:15 am 0 minutes elapsed

8 0
3 years ago
Read 2 more answers
From previous polls, it is believed that 66% of likely voters prefer the incumbent. A new poll of 500 likely voters will be cond
Vladimir79 [104]

Answer:

The mean and standard deviation of the number preferring the incumbent is mean = 330, standard deviation = 10.59.

Step-by-step explanation:

We are given that From previous polls, it is believed that 66% of likely voters prefer the incumbent.

A new poll of 500 likely voters will be conducted. In the new poll the proportion favoring the incumbent has not changed.

Let p = probability of voters preferring the incumbent = 66%

n = number of voters polled = 500

<u>So, the mean of the number preferring the incumbent is given by;</u>

         Mean = n \times p = 500 \times 0.66

                                = 330 voters

<u>And, standard deviation of the number preferring the incumbent is given by;</u>

          Variance =  n \times p\times (1-p)  

                          =  500 \times 0.66 \times (1-0.66)

                          =  112.2

So, Standard deviation =  \sqrt{Variance}

                                       = \sqrt{112.2}  = 10.59

7 0
3 years ago
Perimeter of the figure?
vlabodo [156]

Answer:

32 cm

Step-by-step explanation:

As we could see if the image was a full rectangle with width is 7 cm and the length is 9 cm, the perimeter of it would be 32 cm.

8 0
3 years ago
Carmen deposits $2000 into an account that pays simple interest at a rate of 3% per year. how much interest will she be paid in
STatiana [176]
Sn=So(1+p/100*2)

2000*(1+3/100*2)=2000(1+3/50)=2000*53/50=40*53=2120$

My answer:2120$
8 0
3 years ago
$280 is what percent of $3500?
professor190 [17]

Divide then multiply by 100:

280 / 3500 = 0.08

0.08 x 100 = 8%

Answer: 8%

6 0
2 years ago
Read 2 more answers
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