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3 years ago

Determine whether the situation calls for a survey, an observational study, or an experiment.

Mathematics

1 answer:

antoniya [11.8K]3 years ago

4 0

Answer:

The answer is "experiment."

Explanation:

When it comes to finding out whether a new reading program can increase reading comprehension, an experiment is important. This procedure is being used in order to validate a hypothesis, particularly in a research study. In the situation above, you have to validate whether a new reading program can increase the reading comprehension or not.

The experiment consists of the independent, dependent and controlled variables. The independent variables are the ones being changed by the researcher, while the dependent variables tell whether the changes in the independent variable is significant. The controlled variables are the ones that are constant.

The dependent variable above is the reading comprehension, while the new reading program is the independent variable. Examples of controlled variables are the ages of the participants. The age directly affects the reading comprehension, thus it has to be considered.

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The area of a square table is 225/81 square meters. find the length of a side of the table

navik [9.2K]

9514 1404 393

Answer:

5/3 meters

Step-by-step explanation:

The area is the square of the side length, so the side length is the square root of the area.

s = √(225/81) = 15/9 = 5/3 . . . meters

The length of a side of the table is 5/3 meters.

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3 years ago

Match each value to what it represents. 25 = 32 1. 32 power 2. 5 exponent 3. 2 base

poizon [28]

Answer:

The power is 32 because that is what 2 to th 5 is , 2 is the base as its the number being multiplied 5 times which leaves 2 as the exponent.

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2 years ago

Jamaal read 1/11 of a book in 2/5 of an hour. At this rate, how long will it take him to read the entire book?

kodGreya [7K]

He reads 1/11 book in 2/5 hour.

A whole book is 11/11 of a book.

Multiply by 11.

He reads 11/11 book in 11 * 2/5 hour.

He reads 1 book in 22/5 hour.

22/5 hour = 4.4 hour = 4 hours and 24 minutes

8 0

3 years ago

Read 2 more answers

Claire purchases a new dress for the prom. The dress is priced $160, but it is on sale for 30% off. Claire’s aunt works at the s

djverab [1.8K]

Answer:

$Total = \$103.20$

Step-by-step explanation:

Given

$Amount =\$160$

$D_1 = 30\%$ --- first discount

$D_2 = 10\%$ --- second discount

$Sales\ Tax = 7.5\%$

Required

Determine the amount paid

First, we add the total discount:

$D = D_1 + D_2$

$D = 30\% + 10\%$

$D = 40\%$

If she got a discount of 40%, then she paid 60% (i.e. 100% - 40%)

So:

$Amount = 60\% * \$160$

$Amount = \$96$

Calculate the sales tax

$Sales\ Tax = 7.5\% * \$96$

$Sales\ Tax = \$7.2$

$Total = \$96 + \$7.2$

$Total = \$103.20$

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3 years ago

A roundabout of a radius 7 yd laid with a carpet grass. find the area of the roundabout laid with carpet grass

Novay_Z [31]

Area of roundabout = 153.86 yd2

we are given,

radius = 7 yd

Area of circle = π $r^{2}$

= 3.14 × 7× 7

= 153.86 yd2

<h3>What is the area of circle?</h3>

The area of a circle is the space occupied by the circle in a two-dimensional plane. Alternatively, the space occupied within the boundary/circumference of a circle is called the area of the circle. The formula for the area of a circle is A = πr2, where r is the radius of the circle. The unit of area is the square unit,

To learn more about area of circle from the given link

brainly.com/question/14068861

#SPJ4

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1 year ago