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Anuta_ua [19.1K]
3 years ago
11

Which subtraction expression does the number line model show ​

Mathematics
1 answer:
loris [4]3 years ago
3 0

Answer:

13-+4

Step-by-step explanation:

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Ind 59:
Mila [183]

Answer:

It takes them 1.875 hours.

Step-by-step explanation:

Here, the job is cleaning the house.

Mom does 1 job in 3 hours.

In 1 hour, mom does 1/3 of the job.

Dad does 1 job in 5 hours.

In 1 hour, dad does 1/5 of the job.

Mom and dad working together do the job in x hours.

In 1 hour, mom and dad together do 1/x of the job.

1/3 + 1/5 = 1/x

5/15 + 3/15 = 1/x

8/15 = 1/x

8x = 15

x = 15/8 = 1.875

Answer: It takes them 1.875 hours.

3 0
3 years ago
A total of 200 10-year-old children of similar intellectual abilities participated in a noise experiment in their classrooms. Th
Vladimir79 [104]

Answer:

The dependent variable for this experiment is the ability of students with similar intellectual abilities to recall the meaning of a symbol in a textbook one week after the start of the experiment which depends on the presence or absence of noise outside the classroom.

Step-by-step explanation:

In an experiment, the independent variable is the one whose value, form or outcome is not determined by any other variable in the experiment.

The dependent variable is the one whose value, form or outcome is determined by one or more other variable(s) in the experiment.

This experiment tests the abilities of students with similar intellectual abilities to recall the meaning of a symbol in a textbook one week after the start of the experiment.

This ability was made to depend on whether there was noise or no noise outside their classrooms.

Since, this variable to be measured is determined by another variable in the experiment, it is evident that this is the dependent variable for this experiment.

Hope this Helps!!!

6 0
3 years ago
What is the volume of the sphere? Use 3.14 for and round to the nearest whole number.
Elis [28]

cutei mo boy Chad bleehhh

6 0
2 years ago
Pueden responder rápido por favor? tengo hasta las 10 :v
Marina CMI [18]

Answer:

what are u saying I asked my Spanish teacher and she said...

Step-by-step explanation:

its D idn why hm any way have a great day if u can understand what I'm saying :D

8 0
3 years ago
. Use the number line to illustrate the difference: -3-(-7)​
Oxana [17]

omhhhhhhfffffffyyyyuuuuu

8 0
3 years ago
Read 2 more answers
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