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just olya [345]
3 years ago
10

Find the x intercepts and the y intercepts of the line 9x-7y=-12

Mathematics
2 answers:
irakobra [83]3 years ago
7 0
X= 12 and y=12
Explanation: To get the variables alone, you multiply each by 0. That would leave you with x-y=12. So the x is 12 and the y is 12. Hope this helped!
WARRIOR [948]3 years ago
7 0
9x - 7y = -12

-7y = -9x - 12

7y = 9x + 12

y = 9/7x + 12/7

0 = 9/7x + 12/7

9/7x = 12/7

x = (12/7) / (9/7)

x= 1.333...

y intercept = 1.714285... (12/7)

x intecept = 1.333... (4/3)

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3 years ago
Which phrase represents this expression?
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7 0
3 years ago
A bus leaves a station traveling north at 70 kilometers per hour. Half an hour later a
Semenov [28]

Answer:

280 km

Step-by-step explanation:

Given that a bus, say b_1, leaves a station traveling north at speed of  70km/hour.

Half an hour later the second bus, say b_2,  leaves a station traveling north at speed of  70km/hour.

As, distance = speed x time,

so, the distance traveled by bus b_1 in 0.5 hours = 70 x 0.5 = 35 km.

Note that, both the buses are traveling in the same direction and when the second bus leaves the station, the first bus already covered a distance of 35 km.

Let the second bus took t hours to meet the first bus and both the buses meet at a distance of d km from the station.

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\Rightarroe t= \frac {d-35}{70}\cdots(i)

and the distance traveled by the second bus, d = 80t km

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Now, equation the equation (i) and (ii), we have

\frac {d-35}{70}=\frac {d}{80} \\\\\Rightarrow 8(d-35)=7d \\\\\Rightarrow 8d - 280 = 7d \\\\\Rightarrow 8d-7d=280 \\\\\Rightarrow d = 280 km

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7 0
2 years ago
9. Use the diagram below to answer #9-12. Given Triangle GHI with G(7, 0), H (-5, 5) and I (1, 9), find the midpoint of HI.
Allushta [10]
Midpoint formula : (x1 + x2) / 2, (y1 + y2) / 2
(-5,5)....x1 = -5 and y1 = 5
(1,9).....x2 = 1 and y2 = 9
now we sub
m = (-5 + 1) / 2, (5 + 9) / 2
m = -4/2, 14/2
m = (-2,7) <=== ur midpoint of HI

3 0
3 years ago
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