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RUDIKE [14]
4 years ago
12

Every morning Sasha exercises for 20 minutes. She exercises k minutes every evening. Next week she will double her exercise time

at night. Write an algebraic expression to show how long Sasha will exercise each day next week.
Mathematics
1 answer:
lapo4ka [179]4 years ago
8 0
If k=20 minutes
Each day Sasha will exercise 2 times more. 2 times more than k is 2k.
So first week Sasha will exercise k+2k+3k+4k+5k+6k=20+40+60+80+100+120=440 minutes
The formula to show how long Sasha will exercise each day next week is:
440 + 20*x
where 440 is initial exercise time, and x is number of day in next week.
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The average body temperature of all healthy adults is 98.6 F. A doctor takes a random sample of 100 healthy adults and records t
Yuliya22 [10]

Answer:

Explained below.

Step-by-step explanation:

A parameter is a valuable element of statistical analysis. It denotes the characteristics that are used to define a given population. It is used to define a particular attribute of the population. For instance, population mean, population standard deviation, population proportion and so on.

  • The parameter of interest is the average body temperature of all healthy adults, <em>μ</em> = 98.6°F.

While making a statistical conclusion about the population under study, the parameter value is unknown. This is because it would not be possible to gather data from every single member of the population. So a sample is selected from the population to derive a conclusion about the parameter.

A statistic is the value of the characteristics that are computed using this sample. For instance, sample mean, sample standard deviation, sample proportion and so on.

  • The statistic is the average body temperature of 100 randoly selected healthy adults, \bar x=98.2^{o}F.
4 0
3 years ago
Can you give me an equation that equals to 31
lys-0071 [83]
There are m any examples of equations that equal 31. Here are a few:
17 + 14
30 + 1
60 - 29

I like this one though (its 2 step)

(15 x 2) + 1

Hope this helped :)
7 0
4 years ago
Read 2 more answers
The numbers on two consecutively numbered gym lockers have a sum of 125. What are the locker numbers?
frosja888 [35]

Answer:

62 and 63

Step-by-step explanation:

n + n + 1 = 125

2n + 1 = 125

2n = 124

n=62

6 0
3 years ago
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In parallelogram HJKL if JM=19 find ML.
zalisa [80]

Answer:

19

Step-by-step explanation:

in any parallelogram the diagonals bisect each other evenly. that means if JM = 19, ML is also 19. hope this helps

4 0
3 years ago
a term salinity refers to the amount of salt in water. the salinity of earths oceans is about 525 grams of dissolved salt for ev
Leona [35]

Answer:

<u>0.035 grams</u>

Step-by-step explanation:

<u>Grams of salt per gram of ocean water</u>

  • Divide the amount of salt by amount of water
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  • 525 g / 15000 g [∴1 kg = 1000 g]
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For every gram of ocean water, there is <u>0.035 grams</u> of salt dissolved in it.

5 0
2 years ago
Read 2 more answers
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