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3 years ago

7. Rosa Collects data on what students at her school like to eat at the movie

Mathematics

1 answer:

Margaret [11]3 years ago

7 0

Answer:

Her data are partially shown in the table. Of the students she asks, 60% of those

who like to eat popcorn also like to eat candy. Complete the table to show the

number of student in each category.

Step-by-st

Rosa Collects data on what students at her school like to eat at the movie

theater. She asks a random sample of 120 students two questions. Do you liko

eat popcorn at the movie theatre? Do you like to eat candy at the movie theatre?

Her data are partially shown in the table. Of the students she asks, 60% of those

who like to eat popcorn also like to eat candy. Complete the table to show the

number of student in each category.

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Find the distance between the two points in simplest radical form.

Jlenok [28]

Answer:

$d=\sqrt{58}\approx7.6$

Step-by-step explanation:

To find the distance between any two points, we can use the distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2$

Our first point, A, is at (1, 1) and our second point, B, is at (-2, 8).

Let's let A(1, 1) be (x₁, y₁) and B(-2, 8) be (x₂, y₂). Substitute this into the distance formula:

$d=\sqrt{(-2-1)^2+(8-1)^2$

Subtract:

$d=\sqrt{(-3)^2+(7)^2$

Square:

$d=\sqrt{9+49}$

Add:

$d=\sqrt{58}$

This cannot be simplified.

So, the distance between the two points is √58 or about 7.6 units.

And we're done!

So... where's my cookie :)?

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3 years ago

To obtain the area of a sector, what fraction is multiplied by the area of a circle (A = πr2)?

romanna [79]

Let r be a radius of a given circle and α be an angle, that corresponds to a sector.

The circle area is $A=\pi r^2$ and denote the sector area as $A_1$ .
Then $\dfrac{A_1}{A}= \dfrac{\alpha}{2\pi}$ (the ratio between area is the same as the ratio between coresponding angles).

$A_1=\dfrac{\alpha}{2\pi} \cdot A=\dfrac{\alpha}{2\pi} \cdot \pi r^2= \dfrac{r^2\alpha}{2}$ .

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3 years ago

Ab-0.5bab−0.5ba, b, minus, 0, point, 5, b when a=1a=1a, equals, 1 and b=5b=5

barxatty [35]

Answer:

2.5

Step-by-step explanation:

Put the values in place of the corresponding variables and do the arithmetic:

ab - 0.5b = (1)(5) -0.5(5) = 5 - 2.5 = 2.5

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Serggg [28]

Answer:

250

Step-by-step explanation:

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In the figure below, angle y and angle x form vertical angles. Angle x forms a straight line with the 50° angle and the 40° angl

Nataly [62]

Step-by-step explanation:

sorry but u should provide with a diagram for better understanding of ur question

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3 years ago