MeowLover17
  • MeowLover17
Celina had a rectangular tablecloth with dimensions x feet and 3 feet. She put lace along 4 feet of the edge of the tablecloth. An expression is shown below: (2x + 6) - 4 Part A: What does the expression represent? (4 points) Part B: What does 2x + 6 represent? (3 points) Part C: What does 2x represent? (3 points)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
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Z4K4R1Y4
  • Z4K4R1Y4
if you caculating the perimeter of the cloth what would you write?
MeowLover17
  • MeowLover17
Im not sure.
Z4K4R1Y4
  • Z4K4R1Y4
|dw:1432939869827:dw| you would write: x + x +3 + 3

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MeowLover17
  • MeowLover17
Yes, so (2x+6) represents the entire perimeter?
Z4K4R1Y4
  • Z4K4R1Y4
yes
MeowLover17
  • MeowLover17
So does (2x+6)-4 represent the area or...?
Z4K4R1Y4
  • Z4K4R1Y4
no. (2x + 6) is the entire perimeter...but 4 ft have lace on them.
Z4K4R1Y4
  • Z4K4R1Y4
so what would (2x +6) - 4 be?
MeowLover17
  • MeowLover17
I'm not sure, but i'd have to guess, its the perimeter minus the lace. im not sure what it is otherwise.
MeowLover17
  • MeowLover17
Is there a more detailed way of describing the expression?
Z4K4R1Y4
  • Z4K4R1Y4
you're right. it means that's the length of the perimeter that doesn't have lace.
MeowLover17
  • MeowLover17
Okay i see now, So for part A i'd put Part A: The expression (2x+6)-4 represents the part of the perimeter without the lace. Part B: (2x+6) Represents the entire perimeter, x+x being two sides, and 3+3 each being another two sides. Part C: 2x just represents the parallel sides of the rectangle. Also known as the sides opposite to each other, and would basically give its length once x is plugged in.
Z4K4R1Y4
  • Z4K4R1Y4
couldn't have put it better myself!!
MeowLover17
  • MeowLover17
Thanks for your help, do you think you can help me with a few more?
Z4K4R1Y4
  • Z4K4R1Y4
i can try
MeowLover17
  • MeowLover17
Okay here i go, Veronica teaches French in groups of four students. She rents a room for $200 per month. She charges $45 per hour per student. Veronica teaches seven groups of students, and her net earnings per month are $6,100. Part A: If each student learns French for the same number of hours, write an equation that can be used to calculate the number of hours each student learns French in a month. (5 points) Part B: How many hours did each student learn French each month? Show your work and justify each step of your work. (5 points)
MeowLover17
  • MeowLover17
@Z4K4R1Y4 you still there?
Z4K4R1Y4
  • Z4K4R1Y4
yh
Z4K4R1Y4
  • Z4K4R1Y4
Sorry, i can't help with this one.
anonymous
  • anonymous
28*45*h=6100+200 28 represents the students 45 represents the cost per hour. h represents the # of hours
MeowLover17
  • MeowLover17
Its fine thanks for your help on the other one.
Z4K4R1Y4
  • Z4K4R1Y4
np
Z4K4R1Y4
  • Z4K4R1Y4
looks like you got help :)
MeowLover17
  • MeowLover17
@LegendarySadist What do i use that for?
anonymous
  • anonymous
It is the answer for Part A and the formula you would use to solve Part B
MeowLover17
  • MeowLover17
Okay, so i just solve for h, in 28*48h=6,100+200?
anonymous
  • anonymous
Honestly I'm not too sure about the "+200" part since I'm not very well acquainted with what "net earning" is referring to. You may or may not need the +200
MeowLover17
  • MeowLover17
i get 28*48h=6,300 --> 225 divded by 48 recieving 4.6875
MeowLover17
  • MeowLover17
Is that the answer for part b?
anonymous
  • anonymous
ok, I confirmed the +200, so yeah that should be the answer.
MeowLover17
  • MeowLover17
but wait would the equation look like this (7)(4)(48)x+200=6,100?
MeowLover17
  • MeowLover17
instead of the +200 being on the other side
anonymous
  • anonymous
Wait, wait
MeowLover17
  • MeowLover17
oh nevermind i think you are right
anonymous
  • anonymous
I just noticed you made a typo and put 28*48 instead of 28*45
MeowLover17
  • MeowLover17
oops
MeowLover17
  • MeowLover17
so lemme try this again
MeowLover17
  • MeowLover17
28*45*h=6100+200 28 represents the students 45 represents the cost per hour. h represents the # of hours 1260h=6,300 h=5
MeowLover17
  • MeowLover17
Thanks i believe that is correct!
anonymous
  • anonymous
Yeah, that looks right to me. Glad i caught that =)
MeowLover17
  • MeowLover17
Yea thanks, do you you think you have time for a few more?
anonymous
  • anonymous
I could help with one or two, but no more than that
MeowLover17
  • MeowLover17
Okay sounds good
anonymous
  • anonymous
Although it mostly depends on how quickly we can get through them
MeowLover17
  • MeowLover17
Sam is observing the velocity of a car at different times. After two hours, the velocity of the car is 54 km/h. After four hours, the velocity of the car is 58 km/h. Part A: Write an equation in two variables in the standard form that can be used to describe the velocity of the car at different times. Show your work and define the variables used. (5 points) Part B: How can you graph the equation obtained in Part A for the first six hours? (5 points)
MeowLover17
  • MeowLover17
They should be rather fast
MeowLover17
  • MeowLover17
That is the next question
anonymous
  • anonymous
Sorry for the delay, but i suppose it would be y=2x+50 wouldn't it? Or just 2x+50
MeowLover17
  • MeowLover17
Im not so sure.
anonymous
  • anonymous
Well it satisfies both of them. For x of 2, you would get 54 and an x of 4 would get you 58
MeowLover17
  • MeowLover17
Okay but isnt that in slope intercept form
MeowLover17
  • MeowLover17
So X represents the amount of Hours, and Y represents different times???
anonymous
  • anonymous
Slope intercept form is y=mx+b with m being the slope and b being the y-intercept. We have y=2x+52 with 2 being the m and 52 being the b
MeowLover17
  • MeowLover17
How can we put that in standard form??
anonymous
  • anonymous
Oh, didn't notice that =(
MeowLover17
  • MeowLover17
does it being in slope intercept form change our entire equation? or can we just switch it to standard? also what do the X and Y variables represent
anonymous
  • anonymous
I'd think it would just be -2x+y=50
anonymous
  • anonymous
But honestly I'm not sure
MeowLover17
  • MeowLover17
Okay and x represents the velocity while y represents time? in other words we could do -2v+t=50???
anonymous
  • anonymous
Standard form is just so useless that i never use it and don't remember how to convert.
MeowLover17
  • MeowLover17
Okay well how would i answer for part A: and B:????
anonymous
  • anonymous
Actually yeah, just graphed them and they both fit so -2v+t=50 would be it
MeowLover17
  • MeowLover17
For part A do i put Part A: -2v+t=50 If you input 2 for velocity or 4 both satisfy what is given in the primary equation. v represents the velocity, while t represents time. To solve for v just add it to the other side --> t=+2(2)+50 --> t=54, then you could switch out 4 for v receiving 58. Part B: To graph, just plug in 0 for t and then 6 for t...you get (0,50) and (6,62) Connect those 2 points and you have your graph for the first 6 hours
MeowLover17
  • MeowLover17
So would that be correct? or is my part a or b wrong.
anonymous
  • anonymous
Yeah, I'd say that looks good
MeowLover17
  • MeowLover17
Okay thanks do you think you have time for one more??
anonymous
  • anonymous
Yeah, I can do one more
anonymous
  • anonymous
Gonna be the last tho
MeowLover17
  • MeowLover17
Okay sounds great
MeowLover17
  • MeowLover17
here i go
MeowLover17
  • MeowLover17
The table below shows the outputs y for different inputs x: Input (x) 1 1 3 3 Output (y) 4 2 12 6 Part A: Does the table represent y as a function of x? Justify your answer. (5 points) Part B: The total cost f(x), in dollars, for renting a paddleboat for x hours is shown below: f(x) = 20 + 10x What is the value of f(120), and what does f(120) represent? (5 points)
MeowLover17
  • MeowLover17
I believe for Part a it would be Part A: No the GRAPH does NOT represent a function being there are more than one of the same x variable. But im not sure for part B
MeowLover17
  • MeowLover17
Sorry i meant the table not graph
anonymous
  • anonymous
Wait, the input of 1 has two outputs? Definitely not a function there.
MeowLover17
  • MeowLover17
Yea, but i dont understand part B.
anonymous
  • anonymous
Just put 120 for x so f(x)=20+10(120)
MeowLover17
  • MeowLover17
Okay and what does that represent???
anonymous
  • anonymous
The cost for renting it for 120 hours
MeowLover17
  • MeowLover17
Is that the last one you could help me on? if so your help was appreciated and still is lol.
anonymous
  • anonymous
Yeah, I got my own homework to do, I just came here for a little break (a.k.a. procrastination)
MeowLover17
  • MeowLover17
Alright awesome thanks for helping. good luck with your homework.
anonymous
  • anonymous
No problem and good luck to you as well =)

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