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vaieri [72.5K]
3 years ago
12

Math To Do, i-Pizzdy

Mathematics
1 answer:
sveta [45]3 years ago
8 0

Answer:

3/4ths of a mile

Step-by-step explanation:

Just devide 3 by 4 because there are 4 people and 3 miles

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If the 10th of the 10 consecutive numbers is 10, what is their sum?
liq [111]
Represent these consecutive numbers (assuming that they are all integers):

x
x+1
x+2
x+3
x+4
x+5
and so on
x+8
x+9 is the tenth number.  x+9 = 10, so x = 9.

Think of it this way:  there are 10 consecutive numbers, and the last one is 10.

Working backwards, we get the sequence 10, 9, ... 3, 2, 1.

The sum of such an arith sequence is equal to the count of the numbers times the average of the first and last terms:

sum here = 10(1+10)/2 = 5(11) = 55          (answer)
7 0
3 years ago
A student in a wildlife biology class wants to determine the abundance of a rodent species in a local nature preserve, divided i
LekaFEV [45]

Answer:

c. Cluster sampling

Step-by-step explanation:

Taking into account that the exercise researcher is looking with limited resources to study a population that is divided, her best option is cluster sampling, which is a method applicable to this type of population, we could select in each group randomly her sample, the observational study is discarded because she does not have much availability of time or resources, nor would the stratified study be useful because she should select subgroups and create them to take samples and this would take more time and resources and sampling systematic is not adequate because it must have all the individuals and after having the list select the sample, but as we know, it is a process that will study the number of individuals so this option is not feasible.

5 0
3 years ago
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What is the area of this triangle ?!
fomenos

Answer:

35.

Step-by-step explanation:

To find the area, multiply the length and the width.

A = L x W

7 x 5 = 35

6 0
3 years ago
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kelly subscribes to a service called mysongs for downloading music she pays a $7 fee each month to download an unlimited numbers
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subtract the fee from the total to get the amount actually spent on songs

23.80-7 = 16.80

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8 0
3 years ago
10 POINTS!! PLEASE HELP Identify which functions have complex roots by selecting the function names on the provided coordinate p
dusya [7]
It's the graphs that don't touch the x-axis have complex roots. Roots are the points where the parabola touches the x-axis. A,C and E all cross/touch the x-axis so they have real roots.


non-real or complex root parabolas are: B, D, F
7 0
3 years ago
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