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2 years ago

This Venn diagram shows the pizza topping preferences for 9 students

Mathematics

2 answers:

egoroff_w [7]2 years ago

8 0

Answer:

Step-by-step explanation:

There are 6 students who like pepperoni or olives

joe katie noah maria zack or julia

there were 9 students serveyed

P (aor b) = 6/9 = 2/3

VashaNatasha [74]2 years ago

4 0

Answer:

$\frac{2}{3}$

Step-by-step explanation:

Given: Total number of the students are nine. Since there are 6 in total students who likes pepperoni and olives. Therefore,

P(A or B)= $\frac{Number of students that likes pepperoni and olives}{Total number of students}$

= $\frac{6}{9}$

= $\frac{2}{3}$

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Ellen thinks that if a line has no slope, then it never touches the y-axis. Which line proves that her statement is incorrect?

Jlenok [28]

Answer: y+0

As y=0 represent x-axis whose slope is 0 and intersects y-axis at the origin.

Step-by-step explanation:

6 0

2 years ago

A band director uses a coordinate plane to plan as how for a football game. During a show, the drummers will march along the lin

LenaWriter [7]

Answer:

The equation in slope-intercept form for the path of the trumpet players is $y=\frac{x}{5}+\frac{12}{5}$ .

Step-by-step explanation:

Consider the provided information.

The drummers will march along the line y=-5x-8.

The trumpets players will march along a perpendicular line that passes through (-2,2).

The slope of line y=-5x-8 is: m₁ = -5.

The slope of perpendicular lines are: $m_1\times m_2=-1$

$-5\times m_2=-1$

$m_2=\frac{1}{5}$

Hence, the slope of the line should be 1/5.

The line passes through (-2,2).

Now use point slope form to find the equation of line.

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

Substitute m=1/5, x₁=-2 and y₁ = 2 in above formula.

$y-2=\frac{1}{5}(x+2)$

$y-2=\frac{x}{5}+\frac{2}{5}$

$y=\frac{x}{5}+\frac{2}{5}+2$

$y=\frac{x}{5}+\frac{12}{5}$

Hence, the equation in slope-intercept form for the path of the trumpet players is $y=\frac{x}{5}+\frac{12}{5}$ .

4 0

2 years ago

How many possible outcomes, including both main effects and interaction effects, are possible for a factorial design with three

KIM [24]

Your answer will be 8

7 0

2 years ago

NEED HELP ASAP!!!!!!!!!!

OLga [1]

Answer:

Question 1)

The graph of $y=\dfrac{2}{x}$ is attached to the answer.

The graph of such a functio lies in first and third quandrant such that the graph tends to 0 when x→∞ or when x→-∞ and graph tends to ∞ when x→0.

We can also show the values of this equation on a table:

 x-values  y-values

1/2 4

1 2

2 1

3 2/3

Question 2)

The graph of the equation $y=x^{2}+2x-3$ is attached to the answer.

we will get a upward parabola with this equation whose vetex is: (-1,-4).

The ordered pair on the graph could be shown with the help of a table:

x-values  y-values

-1 -4

0 -3

-3 0

1 0

8 0

2 years ago

In a survey of adults in a certain country conducted during a period of economic uncertainty, % thought that wages paid to wor

Ghella [55]

Answer:

Hello your question has some missing parts below is the complete question

In a survey of 2065 adults in a certain country conducted during a period of economic uncertainty, 63% thought that wages paid to workers in industry were too low. The margin of error was 4 percentage points with 95% confidence. For parts (a) through (d) below, which represent a reasonable interpretation of the survey results? For those that are not reasonable, explain the flaw.

part a:(We are 95 % confident 63 % of adults in the country during the period of economic uncertainty felt wages paid to workers in industry were too low.)

part b: We are 91 % to 99 % confident 63 % of adults in the country during the period of economic uncertainty felt wages paid to workers in industry were too low.

part c: We are 95 % confident the proportion of adults in the country during the period of economic uncertainty who believed wages paid to workers in industry were too low was between 0.59 and 0.67. Is the interpretation reasonable?

part d: In 95 % of samples of adults in the country during the period of economic uncertainty, the proportion who believed wages paid to workers in industry were too low is between 0.59 and 0.67. Is the interpretation reasonable?

Answer : For part A :

The interpretation is flawed. No interval has been provided about the population proportion.

part B :

The interpretation is flawed. The interpretation indicates that the level of confidence is varying.

Part C

The interpretation is reasonable.

Part D

The interpretation is flawed. The interpretation suggests that this interval sets the standard for all the other intervals, which is not true.

Step-by-step explanation:

Given data: Population = 2065 ,

probability = 63% = 0.6,

margin of error = 4% = 0.04

confidence interval (95%) = ( 0.59,0.67 )

For part A :

The interpretation is flawed. No interval has been provided about the population proportion. this is because the confidence interval is not mentioned

part B :

The interpretation is flawed. The interpretation indicates that the level of confidence is varying. this is because the confidence interval is a fixed value

Part C

The interpretation is reasonable.

this is because the confident level given is fixed

Part D

The interpretation is flawed. The interpretation suggests that this interval sets the standard for all the other intervals, which is not true.

3 0

2 years ago