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3 years ago

10

Nico wanted to determine the number of students in his school who buy school lunch.he walked around the cafeteria one lunch peri

od looking to see whether every fifth person in the cafeteria purchased lunch or brought their own.which method did he use to collect his data

1 answer:

pashok25 [27]3 years ago

4 0

Answer:

Observational study

Step-by-step explanation:

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Fill in the three answer below for the area of the composite shape

AfilCa [17]

Answer:

A) 3 x 6 = 18 in^2

B) 11 x 8 x 0.5 = 44 in^2

C) 18 + 44 = 62 in^2

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3 years ago

Solve for -(3x-2)= -4(x+1)-4

Mazyrski [523]

-(3x - 2) = -4(x + 1) - 4

-3x + 2 = -4x - 4 - 4

-3x + 4x = -4 -4 - 2

x = -10 answer

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3 years ago

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The quesiton is in the picture

Kay [80]

Answer:

The three equivalent options are: $\frac{1}{6}x+47$ , $\frac{5}{3}x+35-\frac{3}{2}x+12$ , and $5(\frac{1}{3} x+(5)(7)-(3)(\frac{1}{2}x)+(3)(4)$

Step-by-step explanation:

Expand $5(\frac{1}{3}x+7)-3(\frac{1}{2}x-4)$ to get $\frac{5}{3}x+35-\frac{3}{2}x+12$ .

Simplifying this gets you $\frac{1}{6}x+47$ .

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4 years ago

Line AB and CD have the following points: A(2, 4), B(9, 8), C(-1, 2), and D(3, -5). Are the lines parallel, perpendicular, or ne

inysia [295]

We are given coordinates of A, B, C and D :

A(2, 4), B(9, 8), C(-1, 2), and D(3, -5).

Now, we need to find the slopes of AB and CD.

Slope of AB is :

$\mathrm{Slope\:between\:two\:points}:\quad \mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(2,\:4\right),\:\left(x_2,\:y_2\right)=\left(9,\:8\right)$

$m=\frac{8-4}{9-2}$

$m=\frac{4}{7}$ .

Slope of CD is:

$m=\frac{-5-2}{3-\left(-1\right)}$

$m=-\frac{7}{4}$ .

<em>Slope of CD is negative reciprocal of slope of slope of AB. </em>

<h3>Therefore, lines AB are CD are perpendicular.</h3>

6 0

3 years ago

Read 2 more answers

The distance from the Earth to the moon is about 239,000 miles. Rewrite the distance in scientific notation.

egoroff_w [7]

Answer:

2.39 x 10^5 miles

Step-by-step explanation:

Although it is not usually written, there is always a .0 at the end of a number unless there is a specific decimal that was given.

So, the number here is 239,000.0 and if you count the number of spaces that the decimal needs to move in order to be in the correct spot for scientific notation (which is always after the first number), there is 5 spaces.

Therefore the answer is 2.39 x 10^5 miles.

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2 years ago