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3 years ago

3x+3y=10 -9x-9y=-30

1 answer:

4 0

There is no solution for this answer

solve problems by elimination
eqn1) 3x+3y=10
eqn2) -9x-9y=-30

1st multiply eqn 1 by 3
= 9x+9y=30

now add the 2 equations
eqn1) 9x+9y=30
eqn2) -9x-9y=-30

x term: eqn1+eqn2 = (9x-9x) =0x

y term: eqn1+eqn2 = (9y-9y) =0y

coefficient term: 30-30=0

new eqn = 0x +0y = 0

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3 years ago

Line AB contains points A (8, −4) and B (1, −5). The slope of line AB is....

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Answer:

$The\ slope\ of\ the\ line\ AB\ is \frac{1}{7} .$

Step-by-step explanation:

Formula for slope

$m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}$

As the Line AB contains points A (8, −4) and B (1, −5).

Put points value in the above

$m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}$

$m = \frac{- 5- (-4)}{1 - 8}$

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7 0

3 years ago

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Consider △RST and △RYX.

astra-53 [7]

Answer:

B. StartFraction R Y Over R S EndFraction = StartFraction R X Over R T EndFraction = StartFraction X Y Over T S EndFraction

i.e $\frac{RY}{RS}$ = $\frac{RX}{RT}$ = $\frac{XY}{TS}$

Step-by-step explanation:

Two or more shape or figures are similar when their sides and angles can be compared appropriately.

In the given figure, ΔRXY is within ΔRST. Since the two triangles are similar, then their length of sides can be compared in the form of required ratios.

So that by comparison,

$\frac{RY}{RS}$ = $\frac{RX}{RT}$ = $\frac{XY}{TS}$

Therefore, the correct option to the question is B.

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2 years ago

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Step-by-step explanation:

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