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Cloud [144]
3 years ago
12

Traveling at an average rateaverage rate of between 40 and 50 miles per hour for 4 to 7 hours select the best estimate for the d

istance traveled. 150miles 315 miles 340miles415miles
Mathematics
1 answer:
zmey [24]3 years ago
8 0

Answer:

Step-by-step explanation:

40 X 4 = 7 X50

160miles = 350miles

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Pat created a scatter plot and drew a line of best fit, as shown.
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<h3>Answer:  Choice D</h3><h3>y = (-1/5)x + 7</h3>

======================================

Work Shown:

We will only focus on the two points that are on the regression line.

Those two points are (10,5) and (15,4)

Let (x1,y1) = (10,5) and (x2,y2) = (15,4)

Find the slope of the line through (x1,y1) = (10,5) and (x2,y2) = (15,4)

m = (y2 - y1)/(x2 - x1)

m = (4 - 5)/(15 - 10)

m = -1/5

m = -0.2

Plug m = -0.2, and  (x1,y1) = (10,5) into the point slope formula. Solve for y

y - y1 = m(x - x1)

y - 5 = -0.2(x - 10)

y - 5 = -0.2*x - 0.2*(-10) ... distribute

y - 5 = -0.2*x + 2

y - 5+5 = -0.2*x + 2 + 5 ... add 5 to both sides

y = -0.2*x + 7

y = (-1/5)*x + 7 .... convert -0.2 to -1/5

The equation y = (-1/5)x + 7 is in the form y = mx+b with m = -1/5 = -0.2 as the slope and b = 7 as the y intercept. The y intercept is where the graph crosses the vertical y axis. More specifically, the location of the y intercept in this case is at the point (0,7).

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3 years ago
How do you Graph y= x + 4
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put x=0 then y=4

put y=0 then x=-4

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take a scale and construct a line joining these two points.

you will get the required graph.

hope it helps.

please follow if you like.

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Is 7(w)=(7×2)w commutative property or associative property?
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I don't think those two expressions would even be equal unless w = 0. You can't just add in a 2 from nowhere.
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3 years ago
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