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2 years ago

10

Y = 5x +7 y = 2x + 4 systems of equations

2 answers:

ratelena [41]2 years ago

7 0

I think the answer is 1

alexandr402 [8]2 years ago

3 0

X=1/5y+(-7)/5

hope this helps!

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What is the slope of 2x-1=-3y

torisob [31]

I think its -1 i not very smart so it probably wrong

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2 years ago

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The ordered pair (22, -45) is located in which quadrant of a coordinate plane?

Sergeu [11.5K]

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where is the graph

Step-by-step explanation:

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2 years ago

. You invest £4000 in a fund which earns 11% compound return per year. How much would the fund be worth after 10 years, given th

zmey [24]

Answer: $5,678.85

Step-by-step explanation:

First find out how much the fund was worth after 5 years.

Compound interest formula:

= Investment * (1 + rate) ^ years

= 4,000 * ( 1 + 11%)⁵

= £6,740.23

Half was removed:

= 6,740.23/2

= £3,370.12

Then compound this for the remaining 5 years:

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2 years ago

You are looking at comparable houses with the same asking prices in neighboring towns. The mill rate in the first town is 20 mil

zalisa [80]

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2 years ago

Find the equation of the line that passes through the point of intersection of x + 2y = 9 and 4x -2y = -4 and the point of inter

Rudik [331]

Answer:

$y=-6x+10$

Step-by-step explanation:

The point of intersection of

$x+2y=9...eqn1$

and

$4x-2y=-4...eqn2$

is the solution of the two equations.

We add equation (1) and equation(2) to get,

$x+4x+2y-2y=9+-4$

$\Rightarrow 5x=5$

$\Rightarrow x=1$

We put $x=1$ into equation (1) to get,

$1+2y=9$

$\Rightarrow 2y=9-1$

$\Rightarrow 2y=8$

$\Rightarrow y=4$

Therefore the line passes through the point, $(1,4)$ .

The line also passes through the point of intersection of

$3x-4y=14...eqn(3)$

and

$3x+7y=-8...eqn(4)$

We subtract equation (3) from equation (4) to obtain,

$3x-3x+7y--4y=-8-14$

$\Rightarrow 11y=-22$

$\Rightarrow y=-2$

We substitute this value into equation (4) to get,

$3x+7(-2)=-8$

$3x-14=-8$

$3x=-8+14$

$3x=6$

$x=2$

The line also passes through

$(2,-2)$

The slope of the line is

$slope=\frac{4--2}{1-2} =\frac{6}{-1}=-6$

The equation of the line is

$y+2=-6(x-2)$

$y+2=-6x+12$

$y=-6x+10$ is the required equation

4 0

3 years ago