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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

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Diana creates a graph for the amount of money she earns, y, for working x hours. The graph contains the points (34,408), (40,480
Leni [432]

Answer:

C, B

Step-by-step explanation:

     x        y

A 34     408

B 40     480

C 46     588

A= $12/hour

B= $12/hour

C= $12.78/hour

The difference between A and B is 72.  The difference between B and C is 108.

6 0
3 years ago
Read 2 more answers
J(1)²,
Natali [406]

The table when completed looks like this:

x   -2   -1   0   1   2

f(x) 4   2   1    2   4.

We plot these points on the graph: (-2, 4), (-1, 2), (0, 1), (1, 2), (2, 4).

<h3>What is a function?</h3>

A function exists as a relation between a dependent variable (f(x)) and an expression of an independent variable (x), utilized to define the value of a dependent variable from a provided value of an independent variable.

We have been given a function,

$f(x)=\left \{ {{(1/2)^{x},x\leq 0 } \atop {2^x > 0}} \right.

We have to estimate the value of f(x) when x = {-2, -1, 0, 1, 2}

If the values of x ≤ 0, take f(x) = (1/2)ˣ then

f(-2) = (1/2)⁻² = 2² = 4

f(-1) = (1/2)⁻¹ = 2¹ = 2

f(0) = (1/2)⁰ = 1

If the values of x > 0,  take f(x) = 2ˣ then

f(1) = 2¹ = 2

f(2) = 2² = 4

The table exists as follows

x   -2   -1   0   1   2

f(x) 4   2   1    2   4.

We plot these points on the graph: (-2, 4), (-1, 2), (0, 1), (1, 2), (2, 4).

To learn more about independent and dependent variable refer to:

brainly.com/question/11719274

#SPJ9

7 0
1 year ago
Read 2 more answers
In a play-school with 500 students, the number of boys is 20 more than five-sevenths of the number of girls. Let’s find the numb
Arisa [49]

Answer:

Ok, so we can express the boys as another letter. just express them as the letter B for boys.

Step-by-step explanation:

I really don't know why.

8 0
3 years ago
Which strategy should be used to correctly solve this problem?
hammer [34]
B, make a table of possible values

the best way to do it is actually not listed
to have max area with minimu perimiter, try to get the sides as close measure to each other as possible


I would pick B though

6 0
3 years ago
Selected-Response
maks197457 [2]

Answer: 6 pints

Step-by-step explanation:

32 times 3 in 96

so you must multiply 2 times 3

5 0
3 years ago
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