3 years ago

Plz help…………………………..

Mathematics

1 answer:

Lelu [443]3 years ago

4 0

I think it’s b I’m not sure

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{2x+2y=2,2(x+y)=10}A. single solution B. no solution C. infinite solutions

mixer [17]

To find the number of solutions of a system of linear equations you need to identify the slope (m) in each equation:

$y=mx+b$

-If the slope is the same in both lines the system has no solution

-If the slope is different in the lines the system has one solution

-If the equation are the same (incluided the value of b) the system has infinitely many solutions

You have the next equations:

$\begin{gathered} 2x+2y=2 \\ 2(x+y)=10 \end{gathered}$

Write the equations in slope-intercept form y=mx+b (solve for y).

First equation:

$\begin{gathered} 2y=-2x+2 \\ y=-\frac{2}{2}x+\frac{2}{2} \\ \\ y=-x+1 \end{gathered}$

Second equation:

$\begin{gathered} 2x+2y=10 \\ 2y=-2x+10 \\ y=-\frac{2}{2}x+\frac{10}{2} \\ \\ y=-x+5 \end{gathered}$ As the equations have the same slope m = -1, the system has no solution (the line doesn't cross each other)

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2 years ago

On tuesday katy ran a mile in 8.34 minutes. she ran another mile in 7.89 minutes on wendsday. what was the total time for both m

Triss [41]

Hope this helps you :)

3 0

3 years ago

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Please view attached image about angles (50 pts and brainliest)

Genrish500 [490]

Answer:

The value of X is 126. The angle of JML is 42

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3 years ago

Pls help me thsi is due in 20 mis !!! look at the picture <3

const2013 [10]

Answer:

C,D

Step-by-step explanation:

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3 years ago

Amy works for 36 hours per week for 10 weeks during the summer, making $\$3000$. If she works for 30 weeks during the school yea

Zinaida [17]

Answer:

12 hours per week

Step-by-step explanation:

1. Find how many hours she worked to make $3,000 (36x10=360 hours)

2. divide 360 hours by 30 weeks

she would need to work 12 hours per week to make $3,000

6 0

3 years ago