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irga5000 [103]
3 years ago
11

Use the matrix tool to solve the system of equations 5x+2y=1 and -x-y=-2

Mathematics
1 answer:
Aleks [24]3 years ago
6 0

Answer:

Step-by-step explanation:

1.5x+2y=1\\2.-x-y=-2\\2.2(-x-y=-2)\\5x+2y=1\\-2x-2y=-4      +\\3x=3\\x=1\\Substitute               into                    number one\\5+2y=1\\y=-2

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What is the equation in point-slope form of a line that passes through the points (−4, −1) and (5, 7) ?
ch4aika [34]

Answer:

y+1=8/9(x+4)

Step-by-step explanation:

Tell me if you want one!

5 0
2 years ago
Find the percent of decrease from 310 to 140. Round to the nearest tenth of a percent if necessary.
JulijaS [17]
54.8% I think I'm not sure
4 0
3 years ago
A store manager wants to determine how much to pay her employees. The number of hours the employees work is x, and the hourly wa
Ivanshal [37]

Answer:

<em>The employees will work for 1 hour, will earn $5 per hour and will be paid $5</em>

Step-by-step explanation:

<u>System of Equations</u>

The number of hours the employees work is x.

And the hourly wage that they are paid is y. The store manager is willing to pay the employees a wage given by the equation

10y-30x=20

The business owner states that the employees should be paid a wage given by the equation

6y+30x=60

Adding both equations we have:

16y = 80

Dividing by 16:

y = 80/16 = 5

Substituting into the first equation:

10*5-30x=20

Operating and simplifying:

50-30x=20

50 - 20 = 30x

30x = 30

x = 30/30 = 1

Thus, the employees will work for 1 hour, will earn $5 per hour and will be paid $5

6 0
3 years ago
Please someone answer this!
Kaylis [27]

Answer: 108$

Step-by-step explanation:

5 0
3 years ago
Two punds of cheese cost 8.40. show the cost of 1,2,3,and 4 pumds of cheese. Is there a direct variation
larisa [96]

Answer: 1 = 4.20, 2 = 8.40 3 = 12.60 4 = 16.80

This is a direct variation.


Step-by-step explanation:


4 0
3 years ago
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