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Nat2105 [25]
3 years ago
9

Problem type join results unknown

Mathematics
1 answer:
Allisa [31]3 years ago
8 0

<u>Not sure what you are asking for, but,</u>

<u>Here is an example of a JRU (Join Result Unknown)  word problem</u>:

There were _____ kids on the playground. ____ more kids came onto the playground. How many kids are on the playground?

<u>Here is an example of a JCU (Join Change Unknown)  word problem:</u>

There were ____ kids on the playground. Some more kids came on the playground. Now there are ____ kids on the playground. How many kids came on the playground?

<u> Here is an example of a JSU (Join Start Unknown)  word problem:</u>

Some kids were on the playground. ____ kids came on the playground. Now there are ____ kids on the playground. How many kids were on the playground at the beginning?



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The Department of Homeland Security wants to test a computer virus that it has developed to combat hackers. They plan to test ru
ra1l [238]

Answer:

Simple random sampling  

Observational study

Step-by-step explanation:

Since in the given situation it is mentioned that department wants to test the computer virus and have to run the virus on the random selected computers so here the simple random sampling would be done and based on the simple random sampling the observational study would be done

Therefore the above represent the answer

8 0
3 years ago
I have 2 lines are parallel you can be sure that what
Yakvenalex [24]

Answer:

You can be sure that they will never cross/touch/intersect.

3 0
4 years ago
Which of the following is not a solution to the equation −2x + 3y = 9.
lakkis [162]

Given that the equation -2x+3y=9

We need to determine the coordinate that is not a solution to the equation.

<u>Option A</u>: (0,3)

Substituting the coordinate (0,3) in the equation -2x+3y=9, we get;

-2(0)+3(3)=9

           0+9=9

                 9=9

Since, both sides of the equation are equal, then the coordinate (0,3) is a solution to the equation.

Hence, Option A is not the correct answer.

<u>Option B</u>: (1,-3)

Substituting the coordinate (1,-3) in the equation  -2x+3y=9, we get;

-2(1)+3(-3)=9

           -2-9=9

               -11\neq 9

Since, both sides of the equation are not equal, then the coordinate (1,-3) is not a solution to the equation.

Hence, Option B is the correct answer.

<u>Option C</u>: (-3,1)

Substituting the coordinate (-3,1) in the equation  -2x+3y=9, we get;

-2(-3)+3(1)=9

              6+3=9

                    9=9

Since, both sides of the equation are equal, then the coordinate (-3,1) is a solution to the equation.

Hence, Option C is the correct answer.

Therefore, the coordinate (1,-3) is not a solution to the equation -2x+3y=9

3 0
4 years ago
A 64-cm strip is cut into eight equal pieces . What is the length in mm of one piece
Klio2033 [76]
64/8= 8cm strips

8cm converted to mm= 80 mm

Hope this helps!
8 0
4 years ago
What is the absolute value of –27? <br><br> A.<br> –27<br><br> B.<br> 27
Serga [27]
Absolute value makes it positive
answe is 27
the answer is B

6 0
3 years ago
Read 2 more answers
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