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IRINA_888 [86]
3 years ago
8

10 Points shown in my point board Helppppp

Mathematics
2 answers:
Daniel [21]3 years ago
7 0
The best answer is "We can expect 135 of the grandparents to spend less than 2 hours a day online" because about 54% of all people said they spend >2 hours online everyday, and 54% of 250 is 135. 

Hope this helps!
disa [49]3 years ago
5 0
Let's turn the percentages into numbers to make things easier. To find a percentage, multiply by the percentage/100, e.g. 25 percent multiply by 0.25:

250*0.54 = 135

As it happens, this is one of the answers: exactly 135 of the grandparents spend less than 2 hours online.
The principle is the same for all of the other percentages.
54% of 250 is an exact number, however if a question comes up where you get a decimal answer, that is when you would select about, for example if it solved to 135.5, you cannot have .5 of a person so the answer would be about, since either 135 or 136 individuals could have watched less than two hours (the only time this should come up in the case of people, however, is if they rounded the percentage).
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The altitude of mt. makalu is 8485meters,find its heights in centimeter​
ad-work [718]

Answer:

the answer is 848500 centimetres

Step-by-step explanation:

we have to multiply the value by 100.

hope it helps.

5 0
3 years ago
Read 2 more answers
A presidential candidate plans to begin her campaign by visiting the capitals in 4 of 42 states. What is the probability that sh
marissa [1.9K]

Answer:

P (She selects the route of four specific capitals) = \frac{1}{2686320}=(3.7226)10^{-7}

D. No,it is not practical to list all of the different possible routes because the number of possible permutations is very large.

Step-by-step explanation:

Let's start assuming that each route is equally likely to be chosen.

Assuming this, we can calculate P(A) where the event A is ''She selects the route of four specific capitals'' doing the following :

P(A) = Favourable cases in which the route of four specific capitals is selected / Total number of ways in 4 of 42 states

The favourable cases in which the route of four specific capitals is selected is equal to 1 .

For the denominator we need the permutation number of 4 in 42.

The permutation number is defined as :

nPr=\frac{n!}{(n-r)!}

42P4=\frac{42!}{(42-4)!}=\frac{42!}{38!}=2686320

The probability of event A is : \frac{1}{2686320}=(3.7226)10^{-7}

Finally for the other question : The option D is the correct because the number of possible permutations is 2686320 and is very large to be listed.

7 0
3 years ago
Is my answer correct ??
Tpy6a [65]

The largest triangle and the triangle whose hypotenuse is x are similar. So:

(21 + 4)/x = x/4

Cross multiply:

x^2 = 100

x = 10

Your answer is incorrect. It should be 10, not 20.

5 0
3 years ago
Read 2 more answers
What is 9/10 of 50 in simplest form
ankoles [38]
50 /10 = 5

5 * 9 = 45

45 is 9/10 of 50
8 0
4 years ago
What is the value of 9.6 dived by 1.2
elena-14-01-66 [18.8K]

Answer:

8

Step-by-step explanation:

1.2 * 8 = 9.6

4 0
3 years ago
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