HELP MEH PLS ps the answer is not 2.5
Triplets, Justin, Jason, and Jacob are working on a school project. Justin can complete the project by himself in 6 hours, Jason can complete the project by himself in 9 hours, and Jacob can complete the project by himself in 8 hours. How long would it take the triplets to complete the project if they work together?

=========================================================

Explanation:

Justin can do the full project by himself in 6 hours. This means his rate is 1/6 of a project per hour. In other words, in one hour, he gets 1/6 of the project done.

Jason can do the full project in 9 hours, so his rate is 1/9 of a project per hour, if he works alone.

Jacob's rate is 1/8 of a project per hour since he can get the job done in 8 hours if he works alone.

-----------

So we have these unit rates

The units for each rate is projects per hour.

The total rate is

1/6 + 1/9 + 1/8

12/72 + 8/72 + 9/72

(12+8+9)/72

29/27

If the three brothers work together, and no person slows down another, then the rate at which they work together is 29/72 projects per hour. In short, they get 29/72 of the project done in 1 hour.

Let x be the number of hours needed to get the project done if they work together. Multiplying this time value with the rate leads to the amount of the project done. We want the result to be 1 to indicate a full project is complete.

(rate)*(time) = amount done

(rate)*(time) = 1 full project

(29/72)*(x) = 1

x = 1*(72/29)

x = 72/29

x = 2.48275862068966

x = 2.483

It'll take about 2.483 hours to get the job done if they work together. Again this assumes that they don't get in each others way to slow each other down.

What is 15% of 40? 2 4 5 6

The movement of these rocks from rising sea levels is an example of
A. weathering
B. erosion

A German shepherd puppy weighed 25 pounds at 4 months old and 31 pounds at 5 months old. What is the percent increase or decrease of its weight?

1. If the increase in time causes a corresponding decrease in the price of a product. Identify the proportionality.
2. Identify the variation: “For the increase in speed, the time to cover a fixed distance reduces”.

19=4p-5 and r/2-8=16 two step equations

Help Please?:
Corrine and Aretha are having a 26-mile race. Corrine gave Aretha a head start by letting her begin 3.5 miles in front of the start line. Their distances past the start line as the race has progressed can be represented by linear functions and are shown in the table and graph below. How many minutes after the start of the race will Corinne catch Aretha?
A. 140 mins
B. 180 mins
C. 208 mins
D. 225 mins
Aretha's Rate of Change:
Input: +10
Output: +1.0
Corrine's Rate of Change:
Input: +10
Output: +1.25

Circle the fraction that is NOT in its simplest form.


1/4, 2/5, 3/8, 2/6

Pick 1 pls... im not trynna be mean but pls dont put an answer up here if u dont know

A bowl has 16 grapes, 7 cherries, and 9 strawberries. Write of the following represents cherries to grapes?

Im timed come quick.
Which phrase should be inserted on the line to correctly compare the two fractions? Use the models to help.

4/5 ____________ 16/20

4/5

A model has 4 shaded parts and 1 unshaded part.
16/20
A model has 16 shaded parts and 4 unshaded parts.
is greater than
cannot be compared to
is less than
is equal to

find the value of x. then find the measure of each labeled angle. (the shape has a right angle)

Pls help me I really need help urgent please. Detailed explanation answer to 9 and 10

WILL MARK BRAINELLIEST A sporting goods store manager was selling a ski set for a certain price. The manager offered the markdowns​ shown, making the​ one-day sale price of the ski set ​$327. Find the original selling price of the ski set. It was 20% off then an extra 30%

Need help with these math questions. Will give you the Brainliest

Need helpp fastt plss will give brainliest to who is correct plss helpp

The price of Stock A at 9 A.M. was $12.57. Since then, the price has been increasing at the rate of $ 0.11 each hour. At noon the price of Stock B was $. It begins to decrease at the rate of $ 13.32 each hour. If the two rates continue, in how many hours will the prices of the two stocks be the same?

Please answer quickly! will give brainliest!
a farmer has chickens and cows inside the fence. he counts 17 heads and 58 legs. how many animals were cows and how many were chickens?

each animal has a normal amount of legs

y = -3x + 1
What is the y-intercept?

One day less than 3 weeks?

Which inequality represents this relationship: Five plus three-fourths of a number is less than two times the number.

5x + 3/4 2x
5 - 3/4x < 2x
.

Which of these numbers is irrational?

Consider Figure A and Figure B on the coordinates grid.

To show that figure A and figure B are congruent, which series of transformation could be used?

please help i dont get it..

Determine the average rate of change from 0 to 3.

Which of the following sentences could not be used to represent the equation x - 5 = -10?

Five less than a number is negative ten.
If a number is decreased by five, the result is negative ten.
A number subtracted from five is equal to negative ten.
A number less five equals negative ten.

Hey can anyone help ASAP?!

Can someone help me with this. I don't know it and it is taking forever so can someone help me with it. Thank you

And also this is for 10 points :)

The serving size for toddler's daily vitamin C is 3/4 cup of orange juice. If there are 2 1/4 cups of orange juice, how many servings of vitamin C are there for a toddler?

What is 20% lower than 1.80

How many solutions does this equation have?

–6 + 4m = 6 + 10m

What is the approximate value of the upper quartile?