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4 years ago

This histogram shows the numbers of people who volunteered for community service and the number of hours they worked.

Mathematics

1 answer:

Inga [223]4 years ago

4 0

The correct answer is :85

You can find this out because you would count by fives so : 5, 10, 15, 20, 25 so there are 25 volunteers in the 11-15 hours worked so you would add that to the 21-25 also known as 10 hours worked you also have to add 16-20 also known as 50 so add all that and you get 50 + 25 + 10 = 85

So it's 85
I hope this helped! =)

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Sergio039 [100]

Answer:

width =5.5ft

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Step-by-step explanation:

w=x

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area=w*L

99 = x(2x+7)

$99=2x^{2} +7x$

$2x^{2} +7x-99=0$

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2x(x+9)-11(x+9)=0

(2x-11)(x+9)=0

2x-11=0

2x=11

x=11/2

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Step-by-step explanation:

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HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Mademuasel [1]

9514 1404 393

Answer:

see attached

Step-by-step explanation:

The attachment lists points on each graph.

a) The equation for a horizontal line is ...

y = constant

Here, the output value is always 5, so that is the constant in the equation:

y = 5

b) The graph is a straight line through the origin, so the equation is that of a proportion:

y = kx . . . . . for some constant of proportionality k

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k = y/x = 2/(-4) = -1/2

The equation of the line is ...

y = -1/2x

c) The graph has a rise of 3 units for each run of 1 unit, so the slope is ...

m = rise/run = 3/1 = 3

The y-intercept (where the line crosses the y-axis) is b = -2. Then the slope-intercept form of the equation is ...

y = mx + b . . . . . for slope m and y-intercept b

y = 3x - 2

_____

You can check that the equation is satisfied by each of the points listed. For example, ...

a) in = -4, out = y = 5 . . . matches table

b) in = 2, out = y = -1/2(2) = -1 . . . matches table

c) in = 1, out = y = 3(1) -2 = 1 . . . matches table

(You can check the other table values.)

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