4 years ago

Solve the system of linear equations. Use linear combination aka elimination method.

Mathematics

1 answer:

Margaret [11]4 years ago

5 0

2x+-3y=22 I think. I learned this last year but I don't know

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Weegy solve the system of equations 2x+3y=40 and -2x+2y=20

butalik [34]

Who's Weggy?

2x + 3y = 40

-2x + 2y = 20

These are set up so we can just add them for the solution:

5y = 60

y = 12

2y-20=2x

x=y-10=2

Answer: x=2, y=12

7 0

4 years ago

Write the following inequality in slope-intercept form -6x+2y is greater than on equal to 42

andreyandreev [35.5K]

Answer:

$\large\boxed{y\geq3x+21}$

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

$-6x+2y\geq42\qquad\text{add}\ 6x\ \text{to both sides}\\\\2y\geq6x+42\qquad\text{divide both sides by 2}\\\\y\geq3x+21$

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4 years ago

What is (0,3) given a slope of -2, in slope intercept form

kirill [66]

Answer:

y=-2x + 3

Step-by-step explanation:

8 0

4 years ago

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yKpoI14uk [10]

Answer:

-6 is the same as Subtracting 6, C.

Hope this helps!

Step-by-step explanation:

For example,

5 - 6

5 is positive, +5

and 6 is negative, -6

8 0

3 years ago

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Please please help me

MakcuM [25]

Answer:

a)7 cakes=£5.6

b)£2=4 drinks

c)£7.7

Step-by-step explanation:

a)5cakes=£4

1 cake=4/5=£0.8

7 cakes=£5.6

b)1 cake=3/6=£0.5

£2=4 drinks

c)(0.8×4)+(0.5×7)=£7.7

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3 years ago

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