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Papessa [141]
2 years ago
6

Janet surveyed a class or students she recorded the number of hours that each student volunteered this line plot shows the resul

ts of the survey

Mathematics
1 answer:
maks197457 [2]2 years ago
7 0

Answer:

Part A: 20 students

Part B: 4 hours

Step-by-step explanation:

Part A:

To find the number of students surveyed, we count the number of x there are in the graph.

students = 1 + 2 + 3 + 5 + 1 + 1 + 3 + 2 + 2 = 20

Part B:

To find the mean, we need to find the total number of hours volunteered first.

hours = 1x0 + 2x1 + 3x3 + 5x3 + 1x4 + 1x5 + 3x6 + 2x7 + 2x8 = 80

Now, we can find the mean. We divide the total number of hours volunteered by the number of students.

Mean = 80 ÷ 20 = 4

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Zielflug [23.3K]
Pizza flat price is 12.99
each topping is 0.75

cost=pizza+toppings
toppings=number of topings (n) times cost per toping (0.75)
toppings=0.75n
so

cost=12.99+0.75n or
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7 0
1 year ago
Read 2 more answers
Ampicillin 250 mg IM every 12 hours is ordered. After reconstitution, there's 125 mg/mL. How many mL would you give?
Vanyuwa [196]

Answer:

Correct choice is C. 2 mL.

Step-by-step explanation:

Given that Ampicillin 250 mg IM every 12 hours is ordered. After reconstitution, there's 125 mg/mL. Now we need to find about how many mL would you give.

Let number of ml needed = x.

Since ratio of mg per mL will be fixed so we get equation:

\frac{mL}{mg}=\frac{x}{250}=\frac{1}{125}

\frac{x}{250}=\frac{1}{125}

x=\frac{1}{125} \times 250

x=\frac{250}{125}

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Hence correct choice is C. 2 mL.

4 0
2 years ago
Write an equation that represents a horizontal translation 10 units left of the graph of g(x) = |x|
Vika [28.1K]
Answer:  h(x) = |x+10|

---------------------------------------------------------

Explanation:

To shift the graph 10 units to the left, we replace x with x+10. What's really going on is that the xy axis shifts 10 units to the right (because x is now x+10; eg, x = 2 ---> x+10 = 2+10 = 12) so it appears that the graph is moving to the left. The general rule is h(x) = g(x+10). 

So,
g(x) = |x|
g(x+10) = |x+10| ... every x has been replaced with x+10
h(x) = g(x+10)
h(x) = |x+10|

We can use a graphing tool like GeoGebra to visually confirm we have the right answer (see attached). Note how a point like (0,0) on the green graph moves to (-10,0) on the red graph. 

7 0
1 year ago
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Nuetrik [128]

Answer:

41

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add all numbers together then divide by how many numbers there are

4 0
2 years ago
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the speed of two insects equal the same speed when rounded to the nearest whole number; dragonfly:6.974 ;horsefly:3.934 ;bumbleb
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Am presuming you are looking for the two insects.

In rounding up to nearest whole number, you look at the number before the decimal point, if the number after that is 5 or more, you add up one extra to the digit before the decimal point.

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When you round up honeybee 2.548 to the nearest whole number you have 3.

The two insects are bumblebee and honeybee.

No other two are equal when rounded up to the nearest whole number.
8 0
1 year ago
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