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Dmitry [639]
3 years ago
9

A ______ involves both an experimental group and a control group, which are alike except for the one viable that the experiment

is designed to test.
Mathematics
1 answer:
konstantin123 [22]3 years ago
7 0

Answer:

controlled experiment

Step-by-step explanation:

Controlled experiment is a type of experiment in which except for only one variable, everything is kept constant.

The common type of the controlled experiment compares the control group against the experimental group. All the variables are identical between two groups except factor which is being tested.

Big advantage of the controlled experiment is that one can eliminate much of uncertainty about the results.

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KAJE PIERS' basketball court is rectangular with a length of 8x feet and a width of (x + 3) feet.
spayn [35]

The perimeter and area of the basketball court is 18x + 6 and 8x² + 24x respectively.

<h3>perimeter of a rectangle</h3>

  • Length = 8x
  • Width = (x + 3)

Perimeter of basketball court = 2(length + width)

= 2(8x + x + 3)

= 2(9x + 3)

= 18x + 6

Perimeter of basketball court = 18x + 6

Area of basketball court = length × width

= 8x × (x + 3)

= 8x² + 24x

Area of basketball court = 8x² + 24x

Learn more about perimeter of rectangle:

brainly.com/question/24571594

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3 0
3 years ago
Problem Solving
Semenov [28]

Answer:

12:30PM

Step-by-step explanation:

Known information:

There are 4 classes.

Each class is 1 hour.

There are 10 minutes between classes, like a break.

Draw a diagram:

start-CLASS1, break, CLASS2, break, CLASS3, break, CLASS4-end

There are 3 breaks because there are no breaks before and after the first  and last classes.

Multiply the number of classes by the time length for class.

Multiply the number of breaks by the time length for breaks.

Add the two numbers together to get the total school time:

Classes: 4*1h = 4h

Breaks: 3*10min = 30min

4h + 30min = 4h 30min

Calculate 4h and 30min after 8:00 AM.

Add 4 hours and 30 minutes to 8.

.    8:00

<u>+   4:30</u>

.    12:30

In the AM/PM clock (not 24 hour clock) there are 12 hours. After 12:59, it becomes 1:00, not 13:00.

Since "12:30" is possible on the AM/PM, we do not need to fix it.

The AM/PM clock changes at 12:00.

This means that after 11:59PM it becomes 12:00AM.

After 11:59AM it becomes 12:00PM.  (Usually lunch)

Since 12:30 passed 11:59, the AM/PM sign changes.

The fourth class ends at 12:30PM.

3 0
3 years ago
Lines AC and ED intersect at point B. If the m∠ABD = 5x - 5 and the m∠EBC = 3x + 15, ∠ABD and ∠EBC are what kind of angles?
Paraphin [41]

If Lines AC and ED intersect at point B, then ∠ABD and ∠EBC are vertically opposite angles

The point where two lines meet is known as an angle.

If line Lines AC and ED intersect at point B, then ∠ABD and ∠EBC will be vertically opposite to each other (They will be equal).

To show that the are equal

Given the angles

m∠ABD = 5x - 5

m∠EBC = 3x + 15

m∠ABD = m∠EBC (vertical angles)

5x - 5 = 3x + 15

5x - 3x = 15 + 5

2x = 20

x = 10

Substitute x = 10 into m∠ABD and m∠EBC

m∠ABD = 5x - 5

m∠ABD = 5(10)-5

m∠ABD = 50 - 5

m∠ABD = 45

Get m∠EBC

m∠EBC = 3x+15

m∠EBC = 3(10)+15

m∠EBC  = 30+15

m∠EBC  = 45 degrees

We can see that both angles are equal. Hence we can also conclude that they are vertically opposite angles

Learn more here: brainly.com/question/23466343

3 0
3 years ago
What is the domain of the function graphed below?
Flura [38]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
Factor: 128 + 2d^3 <br><br> cubes lol
BARSIC [14]

The factorization if the given expression 128 + 2d³ is 2(64 + d³).

<h3>Factorization</h3>

128 + 2d³

There are two parameters in the expression;

  • 128
  • 2d³

The common factors between 128 and 2d³ is 2

So,

128 + 2d³

= 2(64 + d³)

Learn more about factorization:

brainly.com/question/25829061

#SPJ1

4 0
2 years ago
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