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Ksju [112]
2 years ago
8

-3x-5y=-7 -4x+5y=14 solve by elimination

Mathematics
1 answer:
Ymorist [56]2 years ago
3 0

Answer:

es 3/54 eso da My brother

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Solve solve solve solve
Alex17521 [72]

Answer:

64pi

Step-by-step explanation:

area= pi * r^2

7 0
3 years ago
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4k-(3+3k)&gt;2<br>solving inequalities, help please
nikdorinn [45]
4k-3-3k>2
1k-3>2
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6 0
3 years ago
(1st pic) What is the equation of the line shown in this graph?
vredina [299]

Answer:

For figure 1: The equation of a line is y=1

For figure 2: The equation of a line is y=(-4)x+1

For figure 3:The equation of a line is y=\frac{-5}{2}x+5

Step-by-step explanation:

The equation of line slope-intercept form is given by y=mx+c

Where m is the slope of the line and c is the y-intercept.

For figure 1:

Here, Line is parallel to x-axis

Hence, Slope m=0

Also, Line passing to y axis at (0,1)

Y-intercept is c=1

Therefore,

The equation of line is

y=0x+1

y=1

For figure 2:

Figure show a line passing through point (1,-3) and (-1,5)

The slope of the line is given by m=\frac{Y2-Y1}{X2-X1}

Using given points to find out the slope of a line

m=\frac{Y2-Y1}{X2-X1}

m=\frac{5-(-3)}{(-1)-1}

m=\frac{8}{-2}

m=(-4)

Also, Line is intersecting y-axis at (0,1)

Hence, c=1

We can write the equation of line as

y=mx+c

y=(-4)x+1

Thus, The correct option is D). y=(-4)x+1

For figure 3:

From the figure, a line is passing through points (-2,0) and (0,5)

The slope of the line is given by m=\frac{Y2-Y1}{X2-X1}

Using given points to find out the slope of a line

m=\frac{Y2-Y1}{X2-X1}

m=\frac{5-0}{0-(-2)}

m=\frac{-5}{2}

Also, Line is intersecting y-axis at (0,5)

Hence, c=5

We can write the equation of line as

y=mx+c

y=\frac{-5}{2}x+5

4 0
3 years ago
One copy of a new book by Amanda's favorite author cost $9.45. If a total of 2,740 copies of the book were sold on the first day
Arisa [49]
Without taking out the cost that would be given to the author and publisher it would be $25,893, you just multiply 9.45 by 2,740
4 0
2 years ago
6th grade math help me please :))
olga55 [171]

Answer:

1: 7     2: 3

Step-by-step explanation:

4 0
3 years ago
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