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3 years ago

Item 1 Solve the system of linear equations by graphing. 5x+5y=15 2x−2y=10

Mathematics

1 answer:

Marysya12 [62]3 years ago

6 0

After graphing both lines, we're able to tell the solution by looking at the point where the lines cross. In this case, it's at (4, -1). And so that is the solution set.

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I need help with this math

Anit [1.1K]

Answer:

x=9 y=-4

Step-by-step explanation:

1) to eliminate a variable make sure they are the same so you can cancel them out

lets eliminate x

-3 and -2 share a GCF of 6 so

2(-3x-4y=-11)

-6x-8y=-22

3(-2x-6y=6)

-6x-18y=18

-6x-8y=-22

-6x-18y=18

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

10y=-40

y=-4

2)substitute y as -4 in the second equation

-2x-6(-4)=6

-2x+24=6

-2x=-18

x=9

6 0

3 years ago

Read 2 more answers

A man is a musician. He charges $50 for each of the first-three hours. Which is $24.95 for each additional hour. Which expressio

RSB [31]

Cost=3+3
:p

you didn't post any options, so we can't say which is incorrect

6 0

3 years ago

The graph of a line has a slope of -3 and passes through the point (-6,-4).

prohojiy [21]

Answer:

(A) y+4=-3(x+6)

Step-by-step explanation:

The point-slope form of the equation of a line whose slope is m and passes through the point $(x_1, y_1)$ is: $y-y_1=m(x-x_1)$

Given the point: $(x_1, y_1)=(-6,-4)$

Slope, m=-3

$x_1=-6\\y_1=-4$

Substituting these values into: $y-y_1=m(x-x_1)$ , we obtain the point slope form of the equation:

$y-(-4)=-3(x-(-6))\\\\y+4=-3(x+6)$

The correct option is A.

6 0

3 years ago

HELPPPPPPPPPP!!!!!!!!!!

juin [17]

Answer:

The last one

Step-by-step explanation:

measure angle 2 and 6 to see if congruent

4 0

3 years ago

10. Which of the following situations represents a proportional relationship?....

tia_tia [17]

Answer:

G A pool fills at a rate of 90 gallons per hour

Step-by-step explanation:

i dont know

7 0

2 years ago