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vagabundo [1.1K]
3 years ago
8

25 Points! Please Help Me With This. Click On The Photo And Can You Please Help Me Answer #4 I Do Not Get What It Means. If You

Can Also Show Your Work Thanks!

Mathematics
2 answers:
lianna [129]3 years ago
6 0

Answer:

Step-by-step explanation:

It is a bit ambiguous. I'm assuming that what they want you to do is to substitute

y = 140

x = 4  

Into the two equations that went into making the answer of 4 come up

y = 30x + 20

y = 30*4 + 20

y = 120 + 20

y = 140 which is in agreement with your answer

==========

y = 15x + 80

y = 15*4 + 80

y = 60 + 80

y = 140

==============

Conclusion

both equations give the same answer. Both equations are correct.

barxatty [35]3 years ago
5 0

Answer:

So both equations are true

Step-by-step explanation:

#4 was asking you to substitute x = 4 into both equations to see if it's the solution of the equations.

Substitute x = 4

Ritz equation

y = 30x  + 20

y = 30(4) + 20

y = 120 + 20

y = 140

Smits equation:

y = 15x + 80

y = 15(4) + 80

y = 60 + 80

y = 140

Both companies charged same price  $140 for 4 days

So both equations are true

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Answer:

I am not sure but if p/8=0 then it is correct

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2 years ago
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Beth read a total of 12 books over 7 months.
givi [52]

She has been with her book club for 49 months.

Step-by-step explanation:

Books read = 12 books

Time period = 7 months

Therefore,

12 books = 7 months

1 book = \frac{7}{12}\ months    

Books read so far = 84 books

Total time period = x

84 books = x months

1 book = \frac{x}{84}\ months

Using both unit rates;

\frac{x}{84}=\frac{7}{12}\\x=\frac{7}{12}*84\\x=\frac{588}{12}\\x=49\ months

She has been with her book club for 49 months.

Keywords: Unit rates, multiplication

Learn more about multiplication at:

  • brainly.com/question/10699220
  • brainly.com/question/10703930

#LearnwithBrainly

8 0
3 years ago
The radius of a circle is 3 miles. What is the length of a 90° arc?
stealth61 [152]

Answer:

The length of the arc is 4.6375 miles

Step-by-step explanation:

Firstly, find the perimeter of the circle by doing 2*pi*r, you'll get about 18.55 miles.

2*pi*r ---> 2*pi*3 ---> 6*pi ---> ≈ 18.55 miles

Next, plug in x/360, where 360 is the total arc of a circle, and x is the arc you need.

x/360 ---> 90/360 ---> = 0.25

Lastly multiply the two numbers.

18.55 * 0.25 ---> 4.6375 miles is your answer.

<em>(you may need to round your answer if needed)</em>

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The equation is 10 + 2x= 56; 56 - 10= 46; 46 ÷ 2= 23,
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Zanzabum

Answer:

-3y (y^2+ 2y-2)

Step-by-step explanation:

i took the test and got this answer

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3 years ago
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