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2 years ago

12

a librarian is interested in how many books an average visitor checks out. she keeps a tally of how many books are checked out b

y each visitor as she scans them. what type of sample is this?

1 answer:

defon2 years ago

6 0

The answer is convenience sample

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What's the answer to this??

Vitek1552 [10]

(2x^3 + 8x )/(4x^5)
= {2x (x^2 + 4)}/ (2x)(2x^4)
= (x^2 +4)/(2x^4)

4 0

2 years ago

How do you classify a angle?

Semmy [17]

Acute angle: measure between 0 degrees and 90 degrees
Right angle: measure is 90 degreas
Obtuse angle: measure between 90 degrees and 180 degrees
Straight angle: measure is 180 degrees

7 0

3 years ago

Read 2 more answers

Which is the same as dividing a number by 10?

Sati [7]

Answer:

A: Move the decimal one place to the left

Step-by-step explanation:

Examples:

20 / 10 = 2

2 / 10 = 0.2

0.2 / 10 = 0.02

0.02 / 10 = 0.002

7 0

2 years ago

Read 2 more answers

Mario is constructing a square dart board. It will consist of a smaller square centered in a larger square. The smaller square m

Ivan

Answer:

6 inches.

Step-by-step explanation:

Let a represent side length of larger square.

We know that area of square is square of its side length, so area of the larger square will be $a^2$ .

The area of smaller square would be $4^2$ .

We will use proportions to solve our given problem.

$\frac{\text{Area of smaller square}}{\text{Area of larger square}}=\frac{4}{9}$

$\frac{4^2}{a^2}=\frac{4}{9}$

$\frac{16}{a^2}=\frac{4}{9}$

Cross multiply:

$4*a^2=16*9$

$\frac{4*a^2}{4}=\frac{16*9}{4}$

$a^2=36$

Take square root:

$a=\pm\sqrt{36}$

$a=\pm 6$

Since the length cannot be negative, therefore, the side length of larger square is 6 inches.

8 0

2 years ago

Another easy middle school question

nekit [7.7K]

Answer:

D

Step-by-step explanation:

Slope-intercept form is [ y = mx + b ] where m = slope and b = y-intercept. We are already given the slope and y-intercept so m = 2 and b = -4.

y = 2x - 4

Best of Luck!

6 0

3 years ago