3 years ago

Which of the following is equivalent to 3x - 4y = 6?

Mathematics

1 answer:

Oliga [24]3 years ago

6 0

Answer:

the answer is option D

y =(3/4)x - (3/2)

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A triangle on a coordinate plane is translated according to the rule 6, 4(x,y). Which is another way to write this rule?

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3 years ago

Which symbol would make the number sentence true 8/11 ? 0.73

Nikitich [7]

Answer:

0.73 is greater than 8/11 so the answer is B

Step-by-step explanation:

if you make 8/11 into a decimal its 0.727273 which is less than 0.73

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3 years ago

Two passenger train, A and B, 450 km apart, star to move toward each other at the same time and meet after 2hours.

likoan [24]

Let $v$ be the speed of train A, and let's set the origin in the initial position of train A. The equations of motion are

$\begin{cases}s_A(t) = vt\\s_B(t) = -\dfrac{8}{7}vt+450\end{cases}$

where $s_A,\ s_B$ are the positions of trains A and B respectively, and t is the time in hours.

The two trains meet if and only if $s_A=s_B$ , and we know that this happens after two hours, i.e. at $t=2$

$\begin{cases}s_A(2) = 2v\\s_B(2) = -\dfrac{16}{7}v+450\end{cases}\implies 2v = -\dfrac{16}{7}v+450$

Solving this equation for v we have

$2v = -\dfrac{16}{7}v+450 \iff \dfrac{30}{7}v=450 \iff v=\dfrac{450\cdot 7}{30} = 105$

So, train A is travelling at 105 km/h. This implies that train B travels at

$105\cdot \dfrac{8}{7} = 15\cdot 8=120 \text{ km/h}$

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3 years ago

Which ordered pair is a solution of the equation shown?<br><br> 25 points

Dahasolnce [82]

Answer:

4y-2 / 3

Step-by-step explanation:

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2 years ago

Read 2 more answers

Easy problem nice about of points

bezimeni [28]

Answer:

Step-by-step explanation: i am not sure

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3 years ago