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
EastWind [94]
3 years ago
13

Micah can fill a box with books in 15 minutes. While Micah fills the box, Sydney takes the books out puts them on a shelf. With

Sydney taking books out of the box, it takes 20 minutes for Micah to fill the box.
Which of the following can be used to determine the amount of time it takes for Sydney to empty the box if Micah is not adding books?

a. 1 over 15 minus 1 over 20 equals 1 over x
b. 1 over 20 minus 1 over x equals 1 over 15
c. 1 over 15 minus 1 over x equals 1 over 20
d. 1 over 15 minus 1 over x equals x over 20
Mathematics
1 answer:
vova2212 [387]3 years ago
4 0
Micah's velocity = 1 box / 15 minutes = 1/15 box/minute

Sidney's velocity = 1/x

Micah's velocity - Sidney's velocity = 1 box / 20 minutes = 1/20 box/mitue


1/15 - 1/x = 1/20

1/x = 1/15 - 1/20

Answer: option a. 1/15 - 1/20 = 1/x

You might be interested in
Equations for m equals three times n devided by the difference of 4p and 5 n
MrRa [10]
Numerator of the equation is 3*nDenominator is 4*p - 5*n The equation is m = 3n/(4p-5n) 

Numerator = 3*n
Denominator = 4*p - 5*n
Equation = [m = 3n/(4p-5n)]
4 0
4 years ago
40lb<br> is what percent of 75lb
Travka [436]

Answer:

53/100

Step-by-step explanation:

40/75=53/100

7 0
4 years ago
Read 2 more answers
Evaluate the function at x = –2. A. y = –4 B. y = 0 C. y = 2 D. y = 3
lys-0071 [83]
From the graph, identify the x=-2 point on x axis,
(is it 2 units to left of origin.)

now, imagine a vertical line through it.
This vertical line intersects the given line at which point?
The y co-ordinate of this point is your answer.

From the given graph,
the vertical line intersects at (-2,3)
so y= 3 it is :)
4 0
3 years ago
Read 2 more answers
Sue has 18 sweets .Tony also has 18 sweets.Sue gives x sweets to Tony.Sue then eats 5 of her sweets.Tony then eats half of his s
leva [86]

Answer:

SUE: (18-x)-5

TONY: (18+x) / \frac{1}{2}

Sue has 18 sweets

Tony also has 18 sweets

Sue gives x sweets to Tony

Sue then eats 5 of her sweets

Tony then eats half of his sweets

(18-x)-5=(18+x)/ 1/2

x= -7.6

7 0
3 years ago
Ten times a number increased by four is no more that twenty-five.
Darina [25.2K]
10(n)+4<25
             -


< with a line under it means less than or equal to ( in this case 25)
4 0
3 years ago
Other questions:
  • For f(x)=5x-2 and g(x)=2x+1,find(f+g(x)
    14·1 answer
  • What is 3-3 x 6+2=?????????????????????????????????
    5·2 answers
  • Evaluate -2 x 2y , if x = -3 and y = -1. -12 -18 18 12
    5·1 answer
  • What is the correct percent of a quiz score of 26 points out of 60
    8·2 answers
  • What are the solutions of the equation 2x² = 18? Use a graph of the related function.
    12·1 answer
  • How many times bigger is 3x10^8 then 6x10^7​? Plz put an explanation
    14·1 answer
  • Can someone please help me with math.
    6·1 answer
  • DUM89 THIS QUESTION IS FOR YOU
    11·2 answers
  • Help i have ten mins
    12·2 answers
  • Calvin can’t decide if he should use 6 or 12 as the common denominator for adding 1/2 + 3/3. Which should he choose and why?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!