Graph the relation. Is the relation a function? Why or why not? {(-5, 6), (-2, 3), (3, 2), (6, 4)}

A uranium mining town reported population declines of 3.2%, 5.2%, and 4.7% for the three successive five-year periods 1985–89, 1

KATRIN_1 [288]

Answer:

Step-by-step explanation:

Heres the complete question:

A uranium mining town reported population declines of 3.2%, 5.2%, and 4.7% for the three successive five-year periods 1985–89, 1990–94, and 1995–99. If the population at the end of 1999 was 9,320:

How many people lived in the town at the beginning of 1985? (Round your answer to the nearest whole number.)

solution:

Let the population of the town at the beginning of 1985 be P. Then, given that in the first five-year period the population declined by 3.2%, i.e., 0.032, the population of the town at the end of 1989 would be

(1 – 0.032)P = 0.968P.

Again, given that in the second five-year period the population declined by 5.2%, i.e., 0.052, the population of the town at the end of 1994 would be

(1 – 0.052)(0.968P) = 0.948 x 0.968P = 0.917664P.

Finally, given that in the third five-year period the population declined by 4.7%, i.e., 0.047, the population of the town at the end of 1999 would be

(1 – 0.047)(0.917664P) = 0.874533792P.

We are given, 0.874533792P = 9320 or

P = 9320/0.874533792 = 10657.11.

Thus, 10657 people lived in the town at the beginning of 1985

3 0

4 years ago

Can someone show the steps to factor 15x^x y^2 – 3x^3 y+75x^4

umka21 [38]

Step 1- Find the Greatest common factor (GCF)
GCF = 3
Step 2- Factor out the GCF (Write the GCF first. Then, in parentheses, divide each term by the GCF.)
3(15x^xy^2/3 + -3x^3y/3 + 75x^4/3)
Step 3- Simplify each term in the parentheses
3(5x^xy^2 - x^3y + 25x^4)

5 0

3 years ago

A survey of students in the junior class at Avery's high school provided the following information:

Oduvanchick [21]

Avery can explain to her school principal that 85% of juniors think there is a lot of homework because several indicators have increased.

<h3>What is an indicator?</h3>

An indicator is a datum that is taken as a reference to analyze the evolution or change of a fact over time. In this case, the indicators would be:

Weekly hours used to do homework
Number of students with work for after school.

According to the information, it can be inferred that 85% of Junior students consider that there is an increase in homework because there were the following changes compared to last year:

Increase in hours spent on after school homework, last year the average was 5 hours, this year it is 8 hours.
Increase in the number of students with after school jobs, last year it was 135 students, this year it is 215 students.

From the foregoing, it can be inferred that the number of homework has increased in Junior students and that is why now 85% of them consider that homework has increased.

Learn more about indicator in: brainly.com/question/20264817

#SPJ1

5 0

2 years ago

A poll is given, showing 60% are in favor of a new building project.

nikdorinn [45]

Answer:

+70%

Step-by-step explanation:

as more than 7 people wants the building so the probability is 70%

hope it helps you

please mark me as brainlist

6 0

3 years ago

1. If AABC SADEF, DE=17, EF =13, DF =9, and BC = 2x-5, then which of the following is the correct

bulgar [2K]

Answer:

$x=9$

Step-by-step explanation:

<u><em>The correct question is</em></u>

If Triangle ABC is congruent with triangle DEF, DE=17, EF =13, DF =9, and BC = 2x-5, then which of the following is the correct value of x?

we know that

If two triangles are congruent, then their corresponding sides and their corresponding angles, are congruent

In this problem

The corresponding sides are

AB and DE

AC and DF

BC and EF

The corresponding angles are

∠A and ∠D

∠B and ∠E

∠C and ∠F

so

AB≅DE

AC≅DF

BC≅EF

and

∠A≅∠D

∠B≅∠E

∠C≅∠F

<em>Find the value of x</em>

BC≅EF

substitute the given values

$2x-5=13$

Solve for x

$2x=13+5$

$2x=18$

$x=9$

4 0

4 years ago