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3 years ago

The equation -x = y + 7 written in slope-intercept form is

2 answers:

8 0

I think that it's B, y = -x - 7 because first you'd subtract y to get it on the other side then add x and then you'd need to make the y positive so you would divide x + 7 by -1 and that would make it y = -x - 7.

Marianna [84]3 years ago

7 0

Answer:

Step-by-step explanation:

Start with -x = y + 7. Subtract 7 from both sides. Then y = -1x - 7. This is the equation in slope-intercept form.

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Solving systems of Equations Word Problems - CLASSWORK

dem82 [27]

Answer:

Part A) For the number of hours less than 5 hours it make more sense to rent a scooter from Rosie's

Part B) For the number of hours greater than 5 hours it make more sense to rent a scooter from Sam's

Part C) Yes, for the number of hours equal to 5 the cost of Sam'scooters is equal to the cost of Rosie's scooters

Part D) The cost is $90

Step-by-step explanation:

Let

x-------> the number of hours (independent variable)

y-----> the total cost of rent scooters (dependent variable)

we know that

Sam's scooters

$y=8x+30$

Rosie's scooters

$y=10x+20$

using a graphing tool

see the attached figure

A. when does it make more sense to rent a scooter from Rosie's? How do you know?

For the number of hours less than 5 hours it make more sense to rent a scooter from Rosie's (see the attached figure) because the cost in less than Sam' scooters

B. when does it make more sense to rent a scooter from Sam's? How do you know?

For the number of hours greater than 5 hours it make more sense to rent a scooter from Sam's (see the attached figure) because the cost in less than Rosie' scooters

C. Is there ever a time where it wouldn't matter which store to choose?

Yes, for the number of hours equal to 5 the cost of Sam'scooters is equal to the cost of Rosie's scooters. The cost is $70 (see the graph)

D. If you were renting a scooter from Rosie's, how much would you pay if you were planning on renting for 7 hours?

Rosie's scooters

$y=10x+20$

For x=7 hours

substitute

$y=10(7)+20=90$

The cost is $90

4 0

3 years ago

Whole numbers greater than 9 but less than 14

yaroslaw [1]

10, 11, 12, and 13 :)

6 0

3 years ago

A supporting goods store sells 2 fishing reels and 5 fishing rods for $243. Later, they still 8 fishing reels and 6 fishing rods

Gwar [14]

To answer this, you can set up a system of equations. Solve for one of the variables and substitute this new equation into the 2nd equation.

2x + 5y = 243 - I'll solve this one for x.
8x + 6y = 538

2x + 5y = 243
2x = 243 - 5y
2 2
x = 121.5 - 2.5y ; substitute this in for x in the second equation

8x + 6y = 538
8 (121.5 - 2.5y) + 6y = 538
972 - 20y + 6y = 538
972 - 14y = 538
-972 -972
-14y = -434
-14 -14
y = 31

The cost of a rod (y) is $31. 

x = 121.5 - 2.5y
x = 121.5 - 2.5 x 31
x = 44

The cost of a reel(x) is $44.

5 0

3 years ago

Read 2 more answers

Nima can mow 18 yards in 6 days. Which strategy can be used to determine how many yards Nima can mow in 20 days?

alekssr [168]

6×3=18 this is the closets to twenty.
18×3=54
3×2=6
54+6=60

Nima can mow 60 yards in twenty days.

4 0

3 years ago

Read 2 more answers

Y=-5y=−5 Evaluate this expression: 3y+6=3y+6=

Crazy boy [7]

Answer: 3y+6