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yanalaym [24]
3 years ago
14

IM DESPERATE! PLEASE PLEASE PLEASE PLEASE HELP!!!

Mathematics
1 answer:
Maslowich3 years ago
6 0

Answer:

1. Obtuse angle

2. Acute angle

3. Right angle

4. Right angle

5. Right angle

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The waiting times on hold for a call to a customer service department are observed to have the following probability distributio
Elina [12.6K]

Answer:

b. 9.2 minutes

Step-by-step explanation:

To find the expected waiting time for a random call from the sampie given by using the formula:

\sum (f(X)) = \dfrac{\sum f (x) \times x}{\sum x}

number of calls (x)           waiting time f(x) in minutes         f(x) *(x)

0                                                     0                                         0            

2                                                     3                                         6

4                                                     10                                       40

6                                                     15                                       90  

8                                                     10                                       80

10                                                     6                                       60  

\sum x = 30                                                                          \sum f(x) *x = 276

Therefore:

\sum (f(X)) = \dfrac{276}{30}

\sum (f(X)) = 9.2

5 0
3 years ago
More than 2,500 people attended the convention
Advocard [28]
What convention had more than 2,500 people attending?
3 0
4 years ago
Read 2 more answers
I don’t understand how to solve this graph.<br> (Y=MX+B)
Alla [95]

Answer:

The equation of line shown in the graph is \mathbf{y=-\frac{1}{2}x -1}

Step-by-step explanation:

We need to find equation of the line shown in graph.

The equation of line will be in slope-intercept form y=mx+b where m is slope and b is y-intercept.

We need to find slope and y-intercept.

Finding y-intercept

Looking at the graph, we can find y-intercept when x =0, the value of y is known as y-intercept.

So, when x =0, y=-1

So, y-intercept is -1

Finding Slope

Now, for finding slope, consider 2 points on graph

(0,-1) and (-2,0)

Slope can be found using formula: Slope=\frac{y_2-y_1}{x_2-x_1}

We have x_1=0, y_1=-1, x_2=-2, y_2=0

Putting values and finding slope:

Slope=\frac{y_2-y_1}{x_2-x_1}\\Slope=\frac{0-(-1)}{-2-0} \\Slope=\frac{0+1}{-2-0} \\Slope=\frac{1}{-2} \\Slope=-\frac{1}{2}

So, slope is m=-\frac{1}{2}

Equation of line

Now, equation of line having slope m=-\frac{1}{2} and y-intercept b = -1 is

y=mx+b\\y=-\frac{1}{2}x -1

So, equation of line shown in the graph is \mathbf{y=-\frac{1}{2}x -1}

5 0
3 years ago
John and some friends went to a sushi restaurant and ordered some sushi. He bought 2 Ahi Tuna, 1 California Roll, and 1 Eel Roll
Andrew [12]

Answer:

Let "a" represent amount of ahi tuna, "c" represent California rolls, and "e" represent eel rolls.

John: 2a+c+e=26.20

Sally: 3c = 17.85

5 0
3 years ago
A market researcher obtains a list of all streets in a town. She randomly samples 10 street names from the list, and then admini
inessss [21]

Answer: Simple random sampling

Step-by-step explanation:

Given: A market researcher obtains a list of all streets in a town. She randomly samples 10 street names from the list, and then administers survey questions to every family living on those 10 streets.

Since she randomly samples street names , therefore the type of sampling is simple random sampling.

  • A simple random sample is a sample that is a subset of the population the researcher surveyed selected in a way such that all the individuals in the population has an equal chance to be selected.

5 0
3 years ago
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