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Readme [11.4K]
3 years ago
9

53x458/12+758-8= +30=

Mathematics
2 answers:
vekshin13 years ago
7 0
2802.833 there u go
natta225 [31]3 years ago
3 0

Answer

2802.833

Step-by-step explanation:

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450 is 75% of what number?
nataly862011 [7]
It is 600
u could have just looked it up...
7 0
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}

5 0
3 years ago
⦁ Explain how you could use the construction tool or a compass and straightedge to create a line segment that is twice as long a
lara [203]

Answer:

u can be using it at perpendicular and place it's center on point A

hope that helps a bit-

5 0
3 years ago
How do you do it????
m_a_m_a [10]

Answer:find the slope

Step-by-step explanation:

I don't know if you know how to find the slope if not reply back. But that's what the equation wants you to do.

6 0
3 years ago
How can we write y + 8x = 50 in Slope Intercept form? What is the first step?
meriva

Answer:

subtract 8x from both sides

Step-by-step explanation:

this is the first step

6 0
3 years ago
Read 2 more answers
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