All categories

3 years ago

Most americans use 7 trees a year in products that are made from trees? How old is a person who has used 65 tree

Mathematics

1 answer:

irinina [24]3 years ago

3 0

Answer:

So Age of the person is 9.286 years who used 65 trees

Step-by-step explanation:

Given :

Trees used per year = 7 trees / year

Person Used = 65 trees in life

To Find:

Age of person=?

Solution:

We are given with the no of trees used by a person in his lifetime i.e. 65

Now we also see that most american use 7 trees/year

Now

Age of the person = Total trees used / Trees used per year

Putting in the values

we get

Age of the person = 65 / 7

= 9.286 years

So Age of the person is 9.286 years

You might be interested in

Dominic spent 2 3/4 hours on art project. Rachel worked 1 1/3 times as long. How many hours did Rachel work for?

N76 [4]

3 and 2/3 hours.

Multiply the number of hours Dominic spent by the scale factor.

3 0

3 years ago

Read 2 more answers

In a survey of adults who follow more than one sport, 30% listed football as their favorite sport. You survey 15 adults who foll

maxonik [38]

Answer: 0.5

Step-by-step explanation:

Binomial probability formula :-

$P(x)=^nC_x\ p^x(q)^{n-x}$ , where P(x) is the probability of getting success in x trials , n is the total trials and p is the probability of getting success in each trial.

Given : The probability that the adults follow more than one game = 0.30

Then , q= 1-p = 1-0.30=0.70

The number of adults surveyed : n= 15

Let X be represents the adults who follow more than one sport.

Then , the probability that fewer than 4 of them will say that football is their favorite sport,

$P(X\leq4)=P(x=0)+P(x=1)+P(x=2)+P(x=3)+P(x=4)\\\\=^{15}C_{0}\ (0.30)^0(0.70)^{15}+^{15}C_{1}\ (0.30)^1(0.70)^{14}+^{15}C_{2}\ (0.30)^2(0.70)^{13}+^{15}C_{3}\ (0.30)^3(0.70)^{12}+^{15}C_{4}\ (0.30)^4(0.70)^{11}\\\\=(0.30)^0(0.70)^{15}+15(0.30)^1(0.70)^{14}+105(0.30)^2(0.70)^{13}+455(0.30)^3(0.70)^{12}+1365(0.30)^4(0.70)^{11}\\\\=0.515491059227\approx0.5$

Hence, the probability rounded to the nearest tenth that fewer than 4 of them will say that football is their favorite sport =0.5

4 0

3 years ago

If you know the names of the remaining nine students in the spelling bee, what is the probability of randomly selecting an orde

rjkz [21]

The probability of getting the correct order in the spelling bee is 1 chance in 362,880.

This is a permutation problem. Our goals is to find the total number of ways that the 9 students can be ordered.

For the first spot there are 9 choices, then 8 choices, then 7 choices....

We need to evaluate:
9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 362,880

Another way to write this is: 9!

8 0

3 years ago

there is a group of 10 people ordering pizza, each person gets 4 slices, there are 6 slices in each pizza, how much pizza should

Sloan [31]

Answer:

Step-by-step explanation:

60-40=20

5 0

3 years ago

Help,,,,,,,,,, please

alexandr402 [8]

Answer:

Statement and reason in below

Step-by-step explanation:

6 0

3 years ago