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MArishka [77]
3 years ago
15

Can some one help me with this

Mathematics
1 answer:
Goryan [66]3 years ago
7 0
No, y does not vary directly with x. When y varies with x, it means that y and x always have the same ratio. Simplified, the first ratio is 1:5 and the second and third ratios simplified are 1:6. Therefore, y does not vary with x.
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Rama09 [41]

Answer:

210.82

Step-by-step explanation:

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Alexandra [31]

Answer:

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Step-by-step explanation:

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3 years ago
Question 6
Firdavs [7]
So hmmmmm, notice... the boat went up in 3hrs, came back to the starting point in 2hrs, it went up 108km, it came back, well, from 108km to distance 0, so the distance on the way back is just the same 108km

now... let's say the stream has a speed rate of "r", and the boat has a still water speed rate of "b"

bear in mind that, when the boat is going UP, is not really going "b" fast, because the stream's "r" rate is going against it, and thus subtracting "r" from "b", so is really going " b - r " fast

when the boat is going down, is not going "b" fast either, because, again the stream's rate "r" is adding to it, because is going with the current, so is really going " b + r " fast

now, recall your d =rt, distance = rate * time

\bf \begin{array}{lccclll}
&distance&rate&time\\
&-----&-----&-----\\
upstream&108&b-r&3\\
downstream&108&b+r&2
\end{array}\\\\
-------------------------------\\\\
\begin{cases}
108=3(b-r)\implies \frac{108}{3}=b-r\\
\qquad 36=b-r\implies 36+r=\boxed{b}\\\\
108=2(b+r)\implies 54=b+r\\
\qquad 54=\boxed{36+r}+r
\end{cases}

solve for "r"

what's b?  well, 36+ r = b
7 0
3 years ago
Question 4(Multiple Choice Worth 1 points) (06.07 LC) Which expression is equal to 3x? Ox+ 3 Ox+ x + x O x + x2 0 2x + 1 ting​
Firdavs [7]

Answer:

the answer is :.......

x+x+x

6 0
3 years ago
What is the sum of  6/13 and 1/8. why is the sum greater then 1/2
spayn [35]
The lcm is 104
so
48/104+13/104
=61/104
since it is converted to decimal form
61/104=.59

its greater than 1/2 because 1/2 is only .5
8 0
3 years ago
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