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3 years ago

How much solutions does this equation have?

Mathematics

1 answer:

Evgesh-ka [11]3 years ago

8 0

Answer:

All solutions or infinite.

Step-by-step explanation:

Turn 2y = -4x + 6 into standard form - divide by 2

Y = -2x + 3

2x + y = 3

Substitute the y equation in for y.

2x - 2x + 3 = 3

The x variables cancel out.

3 = 3

Which is true so it means all solutions.

Hope this helps.

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Which of the following transformation would not preserve congruence

Mars2501 [29]

I personally think it's C, but it could also be E, so.. idk for sure, sorry
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~{Dunsforhands}

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3 years ago

What is the answer to -12=x+8divided by -3

AysviL [449]

$- 12 = x + \frac{8}{ - 3}$

$- 12 - ( \frac{8}{ - 3} ) = x$

$- 12 - \frac{8}{3} = x$

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$\frac{ - 36 - 8}{3} = x$

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2 years ago

The distance between Johannesburg and Cape town is 1682km. If it took the bus 19:28 min to arrive at its destination calculate t

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Answer:

the average velocity is 86 km/h for the trip

Step-by-step explanation:

from the definition of average velocity

average velocity = distance covered / time required = 1682 km /(19 h + 28 min/60 min/h) = 86 km/h

therefore the average velocity is 86 km/h for the trip

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3 years ago

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kotykmax [81]

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2 years ago

A newspaper and three hot chocolates cost $7. Two newspapers and two hot chocolates cost $6. How much does one hot chocolate cos

pochemuha

Answer:

the cost of one hot chocolate is $2.

Step-by-step explanation:

Let x be the hot chocolate cost and y be the newspaper cost.

Given:

A newspaper and three hot chocolates cost $7

So, the equation is

$3x+y=7$ --------(1)

Two newspapers and two hot chocolates cost $6

So, the second equation is.

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

Find one hot chocolate cost?

Solve equation 1 for y.

$3x+y=7$

$y=7-3x$

Put y value in equation 2

$2x+2(7-3x)=6$

$2x+14-6x=6$

$14-4x=6$

$-4x=6-14$

$-4x=-8$

negative sign is cancelled both side.

$x=\frac{8}{4}$

$x=2$

Therefore, the cost of one hot chocolate is $2.

3 0

2 years ago