1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
grin007 [14]
3 years ago
13

Jenna can paint the shed in 2 hours. Juan can paint it in 1.5 hours. • Jenna says is they work together the job will take 1/2+1/

1.5=1^1/2 hours. • Juan says if they work together the job will take 2+1.5/2=1^3/4 hours. Determine if either Jenna or Juan is correct. Explain your reasoning with numbers and words.
Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
8 0

Answer:

There is a formula for this:

[Worker 1 Time * Worker 2 Time] / [Worker 1 Time + Worker 2 Time]

[2 * 1.5] / [2 + 1.5] = 3.0 / 3.5

= 0.8571428571 Hours =

51.43 minutes

Both Jenna and Juan are INCORRECT.

Step-by-step explanation:

Nostrana [21]3 years ago
7 0

Answer:

Step-by-step explanation:

1 job / 2 hours + 1 job / 1.5 hours = 1 job / x  When they work together.

1/2 + 1/1.5 = 1/x                Basic Equation. Change to decimal form

0.5 + 0.6666 = 1/x          Add like terms on the left

1.1666666 = 1/x              Multiply by x on both sides.

1.1666667 x = 1               Divide by 1.16666667

x = 1 / 1.166667               Do the division.

x = 0.8571428              

x = 6/7 of an hour.

This kind of question will <em>always</em> produce an answer that is less than the smallest number.

So the answer must be smaller than 2 hours or 1.5 hours.

You might be interested in
he half-life of a certain radioactive substance is 14 days. There are 6.6 grams of the substance present initially. Which equati
babunello [35]

Answer:

First one

Step-by-step explanation:

The first one  

y = 6.6 (1/2 ) ^n     where n = the number of half lives

                                42 days/ 14 days/halflife  = 3 halflives

5 0
2 years ago
Read 2 more answers
Suppose the movie theater you work at sells popcorn I'm three different sizes. A small cost $2, a medium cost $5, and a large co
VMariaS [17]

Let, number of small, medium and large popcorn sold are s, m and l respectively.

So, s + m + l = 250    ....1)

Also, l = 2s     ....2)

Total sum = $1726 = 2s + 5m + 10l     .....3)

Putting value of l from 2) to 1) is :

s + m + 2s = 250

m + 3s = 250    

m = 250 - 3s      ....4)

Putting value of m and l in terms of s in equation 3)

We get :

2s + 5( 250 - 3s ) + 20s = 1726

7s = 1726 - 1250

s = 68

l = 136

m = 250 -3(68) = 46

Now,

P_s=68\times 2 = \$136\\\\P_m = 46\times 5 = \$230\\\\P_l = 136\times 10 = \$1360

Hence, this is the required solution.

8 0
3 years ago
Help please Draw an obtuse angle (labeled BIG) Place a point P inside the angle. Now construct perpendiculars form the point to
Mice21 [21]

Answer:

The side closest to P is the side that is on the same side of the angle bisector as P.

Step-by-step explanation:

The angle bisector is the line containing all the points equidistant from the sides of the angle. Points on one side of the angle bisector are closer to the angle side that is on that side of the angle bisector.

___

The attached diagram shows the angle bisector as a dashed line. A couple of different locations for P are shown (P1 and P2). Apparently, we're concerned here with the distance from P along the perpendicular to each side of the angle. For P2 (on the left side of the angle bisector), it may be clear that the left perpendicular is shorter than the right one. Likewise, for P1, the right perpendicular will be shorter.

6 0
3 years ago
What is the percentage of 13/16
Fed [463]
13/16= 0.8125

Hope this helps!
7 0
3 years ago
Read 2 more answers
Given that (-6,2) is on the graph of f(x) find the corresponding point for the function f(1/4x).
Dafna1 [17]
Answer: (-24,2)

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

Work Shown:

The y coordinate stays the same. Only the x coordinate will change.

(1/4)*x = -6
x = -6*4
x = -24 is the new x coordinate
Plugging x = -24 into f((1/4)x) leads to f(-6) = 2

7 0
3 years ago
Other questions:
  • !!!!PLEASE HELPPPP ITS DUE SOON!!!!
    13·1 answer
  • What are the functions for g(x)?
    5·1 answer
  • 15 POINTS!!!1 HELPPP!!!!!!
    15·1 answer
  • Jamie has 7/10 of a pound of chicken to cook for dinner if she's going to split the chicken between three people how much chicke
    9·2 answers
  • How would you graph an inequality ?
    8·1 answer
  • Please help and thank you
    5·2 answers
  • -2.5y + 8y - 10.5y<br><br> 5.5<br> 0<br> -21<br> -5
    11·1 answer
  • HELP !!!!<br><br> Evaluate the expression for the given value of the variable <br><br> 60/m; m = 5
    11·1 answer
  • I need help please???​
    5·1 answer
  • Multiply.<br><br> (−7.3)(−0.08)<br><br> Enter your answer in the box.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!