2 years ago

What are the points of intersection of the lines below? 2x-y=10 y=-4x+2

Mathematics

1 answer:

Virty [35]2 years ago

7 0

The point of intersection is (2,-6).

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Solve 5x - 3y = 9 for y.

LenKa [72]

5x - 3y = 9
5x = 9 + 3y
5x - 9 = 3y
( 5x - 9 ) / 3 = y
y = ( 5 / 3x ) - ( 9 / 3 ) ( I just split the common denominator to individual parts )
y = 5 / 3x - 3

8 0

2 years ago

Find the sum of the zeros in the following equation: (2x-1)(x+8)(2x-4)(x-1)

lara [203]

Answer:

$-9\frac{1}{2}$

Step-by-step explanation:

$2x+1=0$

$2x=-1$

$x=-\frac{1}{2}$

$x+8=0$

$x=-8$

$2x-4=0$

$2x=4$

$x=2$

$x-1=0$

$x=1$

$1+2-8-\frac{1}{2}$

$=-1-8\frac{1}{2}$

$=-9\frac{1}{2}$

Sum of fractions $=-9\frac{1}{2}$

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3 years ago

Problems that equal 3r12

nevsk [136]

What does r mean. if r means multiply blank than 3*4 = 12

8 0

3 years ago

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Choose the best decimal to represent 53/7

Arlecino [84]

Are there choices?

ANSWER BELOW

The answer is 7.5714

53 divided by 7

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3 years ago

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The drain in your 45-gallon bathtub is partially clogged, but you need to take a shower. The showerhead had a flow rate of 2.25

Vladimir [108]

Answer:

25 minutes 42 seconds

Step-by-step explanation:

The tub will fill at the rate of ...

2.25 gal/min - 0.50 gal/min = 1.75 gal/min

It will take ...

45 gal/(1.75 gal/min) ≈ 25.714 min

for the tub to fill.

You can shower for about 25 minutes 42 seconds.

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3 years ago

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