the estimated population of the world was 1.6 billion in 1900 and 4.0 billion in 1975 what is the percent of increase

Find the perimeter of the polygon with the given vertices<br><br>G(2,4), H(2,-3), J(-2,-3), K(-2,4)

IgorLugansk [536]

I graphed these vertices myself in the attached photo, and it turned out to be a rectangle; With the thought that you perhaps made a typo and meant rectangle instead of polygon I continued on and found the perimeter of the rectangle.

The formula for finding the perimeter of a rectangle is P = 2(l+w).

I counted the units of the long side (K & J) to get the length, which is 7.

Next, I counted the units between J & H to find the width which is 4. Now we're ready to use the formula.

First I will add the length plus the width, 7 + 4 = 11.

Then I will multiply 2 x 11 to get a product of 22.

P = 22. :D

8 0

3 years ago

Billie and toni are driving from chicago to phoenix. the first day they drove 420 miles. they want to drive at 65 miles per hour

Ronch [10]

Let x represents the numbers of hours that Billie and Toni are driving after first day and ‘Y’ represent the distance they have passed distance

Y=420+65

And, first day they traveled : 410 mi

2nd day they traveled =65.8=520 mi

3rd day they traveled =65.8=520

By the end of the third they traveled= 420+520=520

1460 mi

7 0

3 years ago

12. x + y = 4

34kurt

Answer:

$x = - \frac{2}{3} \: \: \: y = \frac{14}{3}$

Step-by-step explanation:

Since we know -7x=y we use the substitution method and plug it in the top equation.

$x + - 7x = 4$

$- 6x = 4$

$x = - \frac{4}{6}$

or x=-2/3

Then plug it back in the the bottom equation

$- 7( \frac { - 2}{3} ) = y$

y=14/3

3 0

3 years ago

¿cuales son las funciones de sunass, osinergmin y osiptel?

evablogger [386]

Answer:

la verdD no c

Step-by-step explanation:

pero tu pon lo q creas nadie es perfecto

5 0

2 years ago

sarah can complete a project in 90 minutes and her sister betty can complete it in 120 minutes if they both work on the project

alukav5142 [94]

Answer:

It will take them approximately 51.43 minutes to complete the project together

Step-by-step explanation:

This is what is called a "shared job" problem.

The best way to work on them is to start by finding the "portion" of the job done by each of the people in the unit of time.

So, for example, Sarah completes the project in 90 minutes, so in the unit of time (that is 1 minute) she completed 1/90 of the total project

Betty completes the project in 120 minutes, so in the unit of time (1 minute) she completes 1/120 of the total project.

We don't know how long it would take for them to complete the project when working together, so we call that time "x" (our unknown).

Now, when they work together completing the entire job in x minutes, in the unit of time they would have done 1/x of the total project.

In the unite of time, the fraction of the job done together (1/x) should equal the fraction of the job done by Sarah (1/90) plus the fraction of the job done by Betty. This in mathematical form becomes:

$\frac{1}{x} =\frac{1}{90} +\frac{1}{120}\\\frac{1}{x} =\frac{4}{360} +\frac{3}{360}\\\frac{1}{x} =\frac{7}{360} \\x=\frac{360}{7} \\x=51.43\,\,min$

So it will take them approximately 51.43 minutes to complete the project together.

8 0

3 years ago