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3 years ago

-x- y=-4 -2x+y=-5 How do you it for solving eliminating

Mathematics

1 answer:

Ludmilka [50]3 years ago

7 0

Answer:

x = 3, y = 1

(3,1)

Step-by-step explanation:

Elimination is a method of solving systems where we add or subtract the two equations to "eliminate" one of the variables.

Take a look at our system. We have a -y and a +y. If we added those together, they would cancel!

-x- y=-4

-2x+y=-5 +

--------------

-3x + 0y = -9

It worked! No more y. Solve for x!

-3x = -9

x = 3

Plug x back in to get y.

-x - y = -4

-3 - y = -4

-y = -1

y = 1

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For this exercise we have the following data:

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1 year ago

6b^2+8b-10=0 please show how to do work

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Determine # of solutions using discrimination
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3 years ago

Read 2 more answers

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Harlamova29_29 [7]

Answer:

approximately 3.2 minutes

Step-by-step explanation:

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3 years ago

Bianca took a job that paid $150 the first week. She was guaranteed a raise of 6% each week. How much money will she make in all

ivann1987 [24]

Answer:

$225.54 (hope it help)

Step-by-step explanation:

for 2nd week

$150 for the first week and a raise of 6% each week

which means 150+6%

6% of 150 is 9 (150x0.06)

150+9=159

and it repeats

for 3rd week

6% of 159 is 9.54 (159x0.06)

159+9.54=168.54

for 4th week

6% of 168.54 is 10.1124 (168.54x0.06)

168.54+10.1124=178.652

for 5th week

6% of 178.652 is 10.71912 (178.652x0.06)

178.652+10.71912=189.37112

an easier to do it is to just do 178.652 + 6% on your calculater

and I'll skip all the way to the 8th since you know the formula

212.777390432+6%=225.544033858

225.544033858≈225.54

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3 years ago

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Rama09 [41]

Answer:

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Step-by-step explanation:

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3 years ago