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Lelechka [254]
3 years ago
11

What is 0.6(r 0.2)=1.8

Mathematics
2 answers:
Sveta_85 [38]3 years ago
6 0
Isolate the variable by dividing each side by factors that don"t contain the variable.
r=15
Dahasolnce [82]3 years ago
5 0
0.12r=1.8
Divide both sides by 0.12
r = 15
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Which equation best represents a trend line for the scatter plot?
kvasek [131]
Y = (-3/7)x + 4

Looking at the graph, you can see the trend line plotted. And conveniently, there are a couple of points on the trend line that are indicated. Those points being (0,4) and (7,1). The equation of a line in slope intercept form is:y = ax+b

Looking at the points available, the point (0,4) already gives us the y intercept since x is equal to 0. So our equation becomes:
y = ax + 4

Now we need to determine a which is the slope. The slope is the change in y divided by the change in x. So let's do that
(1-4)/(7-0) = -3/7

And now our equation becomes:
y = (-3/7)x + 4

And given formatting issues, the first option available is the correct one.
3 0
3 years ago
Read 2 more answers
Albert walks 4/5 of a mile in 5/12 of an hour. what was the average speed miles er hour?
NISA [10]

Answer:

3mph

Step-by-step explanation:

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6 0
3 years ago
HELP PLEASE HELP!!!!!!!
Ket [755]
If we are to write this equation in slope-intercept form, it will be in y = mx + b, where m is the slope of the line and b is the y intercept.  We need then to find the slope of the line using 2 points on the line and filling in the slope formula to find the slope.  One of the points we can use is (0, 3) which is also the y intercept.  The y-intercept is found where x = 0.  Where x = 0, y = 3.  So b = 3.  Now for the slope we will use (0,3) and (4,4):  m= \frac{4-3}{4-0} = \frac{1}{4}.  Using that m value and that b value we have the equation y= \frac{1}{4}x+3.  There you go!
3 0
3 years ago
What is eight tenths -five tenths?
kondor19780726 [428]
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6 0
3 years ago
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Harman [31]

The solution would be like this for this specific problem:

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Volume of a cone = 1/3 * pi * r^2 * h 

Total Height = 47

Height of the cone = 12

Height of the cylinder = 35

If the top half is filled with sand, then:

volume (sand) = pi * 4^2 * 36

volume (cone) =  1/3 * pi * 4^2 * 12

Total volume = 1960.353816 cubic millimeters

353816 / (10 * pi) = 62.4 seconds.

It will take 62.4 seconds until all of the sand has dripped to the bottom of the hourglass.

7 0
3 years ago
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