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3 years ago

Study the stem-and-leaf plot. How many cars get between 30 and 50 miles per gallon? 55 POINTS

Mathematics

2 answers:

Serhud [2]3 years ago

4 0

There are 8 cars which gives between 30 to 50 miles per gallon.

Step-by-step explanation:

Stem-and-leaf plot are one of the most classical form of plotting.
The left hand side of vertical line is stem and right is leaf.
unit digit is leaf and tenths digit is stem.
0-9,10-19,20-29,30-39,40-49,50-59,60-69 is range.
Plotting is done by the number which comes between the range.
Example between 10-19 there are two points 19 and 19.
They use discrete variable not continuous.
The are easy to understand because discrete is counting numbers.

grin007 [14]3 years ago

3 0

Answer:

7 cars

Step-by-step explanation:

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3 years ago

9x + 11 = 110<br> what is x ?

slavikrds [6]

Answer:

x = 11, lucky you, this stuff is easy

Step-by-step explanation:

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3 years ago

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A line with a slope of -2/5 that passes through the point (-10,8)

slamgirl [31]

Step-by-step explanation:

$m = - \frac{2}{3} \\ ( - 10 ,\: 8) = (x_1,y_1)$

$y-y_1=m(x-x_1)$

Plug in the values into the equation

$y - 8 = - \frac{2}{3} (x - ( - 10)) \\ y - 8 = - \frac{2}{3}( x + 10) \\$

$y - 8 = - \frac{2}{3} x - \frac{20}{ 3 } \\ y = - \frac{2}{3} x - \frac{20}{3} + 8 \\$

$y = - \frac{2}{3} x + \frac{4}{3}$

To solve for x-intercept , Arrange the values in

$ax + by + c = 0$

$- \frac{2}{3} x - y + \frac{4}{3} = 0$

To find x-intercept .let y = 0 in the above equation

$- \frac{2}{3} x - y + \frac{4}{3} = 0 \\ - \frac{2}{3} x - 0 + \frac{4}{3} = 0 \\$

$- \frac{2}{3} x + \frac{4}{3} = 0 \\ - \frac{2}{3} x = - \frac{4}{3}$

Solve for x ;

$x = 2$

To find y intercept , let x = 0

and solve for y .

I hope it helps <3

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3 years ago

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