MATHEMATICS COLLEGE

What is the distance between-13 and 13 on a number line

Answers

Answer 1

Answer:

Answer:

26 units

Step-by-step explanation:

The distance is found by subtracting the numbers

13- -13

13 + 13

We know that -13 to 0 is 13 units

0 to 13 is 13 units

13 + 13 is 26 units

Answer 2

Answer:

26 that is the answer to your question

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How to display the work for this problem.
-2x-3=8
-2x+4y=22
Answer (-7,2)

Answers

Assuming that this particular type of question is a system of equations one. More specifically linear equations, you would simply substitute one of the equations into the other one. Then upon doing so, plug in the x and y coordinates for the point into the x and y variables of the equation and then see if it is a solution, by checking if the left hand side of the equation equals that of the right hand side of the equation.

The process of using the same or similar experimental units for all treatments is called:______ a. blocking.
b. partitioning.
c. factoring.
d. replicating.

Answers

Answer:

replicating

Step-by-step explanation:

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 at the same time how long will it take them to complete the project

Answers

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:

$(1)/(x) =(1)/(90) +(1)/(120)\n(1)/(x) =(4)/(360) +(3)/(360)\n(1)/(x) =(7)/(360) \nx=(360)/(7) \nx=51.43\,\,min$

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

EXAMPLE: If the function f(x) = 2x==x+4 is restricted to a domain interval of
-4 sxs 4, is the domain over the interval continuous or discrete,
and what is the range of the function?

Answers

The range of the given function in interval notation is $2\le y\le6$ .

The given function is $f(x)=(1)/(2)x+4$ and the domain interval is $-4\le x\le4$ .

The domain and range are defined for a relation and they are the sets of all the x-coordinates and all the y-coordinates of ordered pairs respectively.

Substitute x=4 in the given function, we get

$f(4)=(1)/(2)*4+4$