A teacher wanted to determine the effectiveness of two different learning tools—a computer program or a hands-on approach—for a particular concept she was preparing to teach. She will assign her students to one of the two methods to spend the whole class time to learn this concept.

Which of the following variables would be moderated due to random assignment?

A. the teacher
B. time spent in class
C. computer experience
D. the different learning tools

Answers

Answer 1

Answer:

D

Step-by-step explanation:


Related Questions

Can you help with 3,5,6 please Also can you explain how you did 5 please I dont understand well

Answers

Answer:

3) 46 5) 19.5 6) 31.2

Step-by-step explanation:

all the "y" numbers are the product of the "x" numbers being added or subtracted by something. In 5, y=x-1.5

Find the equation of the axis of symmetry of the following parabola algebraically.
y=-3x^2-6
y=−3x
2
−6

Answers

I have no idea sorry
Find the equation of the axis of symmetry of the following parabola algebraically.
y=-3x^2-6
y=−9x-6

plzzz help answer tyhese

Answers

The slope is m=2 in the first picture. Can be done by rise/run.

The second graph has an undefined slope. Using rise/run would get the run value = 0 and that'd make the slope undefined because the denominator cannot be 0.

First one the it’s undefined and the second one it’s m=1/2

which dot thing do i put?

Answers

Answer:

arrow to the right no filled in dot

Step-by-step explanation:

the (>) shows you which direction the thing is going

in this situation you just have to simplify the problem

4x+2=10

-2. -2

4x=8

x=2

x>2

Answer:

You would put it on 10 and use the arrow pointing the right with a open dot. (The dot should not be filled in and looks like a bubble.)

Step-by-step explanation:

33 is 90% of what number? Round to the tenths place.

Answers

Answer:

36.7

Step-by-step explanation:

Since 33 is 90% of a number, you can divide 33 by 9 to get 3 2/3. This 3 2/3 is 10% of the number, so multiply 3 2/3 by 10 to get 36 2/3. 36 2/3 rounded to the nearest tenth is 36.7, so there's your answer. Hope it helps!

What is the original cost of a skateboard that was discounted by 35% and now sells for $92.95?

Answers

The original price was $152.23.

Answer:

The answer should be $143

What is the value of V81
[tex] \sqrt{81} [/tex]

Answers

Answer: The value is 9

PLS HELP WILL GIVE BRAINLIEST

ignore the one i marked

Answers

Answer:

im almost postive the one you marked is correct

Step-by-step explanation:

Answer:

The second one

Step-by-step explanation:

When you elevate by 3 you get:

[tex]\sqrt[3]{g}^{3} = g[/tex]

Hope this helps, have a good day

SOMEBODY PLEASE HELP!! (view picture, math related$

Answers

Answer:

the answer is B

Step-by-step explanation:

A,B youll see the numbers go across

What is equivalent to -(-2)

Answers

2 is equivalent to -(-2)
2 is equivalent ok vthen

What is the slope? (1,7) (15,14)

Answers

Step-by-step explanation:

y2-y1/x2-x1

15-1/14-7

14/7

=2

On the first visit to the veterinarian's office, Cora's kitten weighed 550 grams. On the second visit, the kitten had gained 350 grams. On the third visit, the kitten had gained another 300 grams.
What is the percent increase since the first visit in the kitten’s weight rounded to the nearest percent?

Answers

Answer:

118%

Step-by-step explanation:

550 grams and 300+350 grams = 650 grams

650/550 grams x 100 = 118.18

So 118.18 % rounded is 118%

Hope this helps plz hit the crown :D

Answer:

The kitten has gained a 218% more weight since the first visit to the vet.

Step-by-step explanation:

In order to get the percentage the kitten has gained you have to add all the weight together and divide the first visit by the total weight.

TO find the total weight is found by adding all the weights together:

550 + 350 + 300 = 1200

now we divide 1200 by 550 to get a decimal which allows us to find the percentage:

1200 / 550 = 2.18181818182

now we multiply 0.45833333333 by 100 to turn the decimal to a percentage:

2.18181818182 * 100 = 218.181818182%

Now we round up to the nearest percentage which is:

218.181818182% = 218%

Solve: x^2-x-6=0
Show your wrok

Answers

Answer:x=-2

or

x=3The factors of which -6 which sum to -1 are -3 and +2(x-3) (x+2)=2Equate each factor to zero and solve for xx +2=0x=-2x-3=0x=3.

The Sweetest Jelly Company sells jellies in i pound jars. How many jars can
be filled from 24 pounds of jelly?

Answers

He can fill 6 jars with 24 pounds of jelly

An airplane travels 500 miles an hour.
How long will it take to travel 4.000 miles?

Answers

An airplane travels 500 miles an hour then it will take 8 hours to travel 4.000 miles.

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

An airplane travels 500 miles an hour. We need to find how long it will take to travel 4.000 miles.

We know that

Let t be the time taken by an airplane to travel 4000 miles.

An airplane traveled 500 miles = 1 hour

An airplane traveled in 1 mile = 1/ 500

An airplane traveled in 4000 miles = 4000/500              

                                                             = 8 hour

Thus, It will take the airplane 8 hours to travel 4,000 miles.

Learn more about a unitary method;

https://brainly.com/question/22056199

Whoever can answer the MOST with work show will ne marked brainliest.

Answers

Answer:

See the picture below

Step-by-step explanation:

help me you guys for brainlest

Answers

Answer:

20

Step-by-step explanation:

[tex]\frac{10^{2} }{5^{1}}[/tex]

[tex]\frac{100}{5}[/tex]

[tex]\frac{20}{1}[/tex]

[tex]20[/tex]

What is the value of g?
−5+7g=3g+9
A.) g=−1
B.) g = 1
C.) g=125
D.) g=312

Answers

Answer:

The answer is D

Step-by-step explanation:

Give the other person brainlest

Answer:

d

Step-by-step explanation:

i took the quiz

sports drinks- $1.75
pizza- $2.25

Answers

Answer:

7 drinks

Step-by-step explanation:

7x1.75=12.25

4 x 2.25= 9

added - 21.25

help me pls it's important

Answers

Answer:

50%?

Step-by-step explanation:

Answer:

55.5%

Step-by-step explanation:

Decrease is negative so It maybe - 55.5%

Please help asap- will give brainliest:
See the image attached and choose ONE

Answers

Yellow is the correct answer, I think.
if u have desmos it will help a lot and i think it would be blue

I need help on this question

Answers

Answer:

A

Step-by-step explanation:

whats 3(x + 2) = 21?
show work please !!​

Answers

Answer:

x=5

Step-by-step explanation:

[tex]3(x+2)=21[/tex]

[tex]3x+6=21[/tex]

[tex]3x+6-6=21-6\\\\3x=15\\\\\frac{3x}{3} = \frac{15}{3} \\\\x=5[/tex]

Answer:

x = 5

Step-by-step explanation:

You first have to multiply 3 by x and 2, and you would get 3x and 6. 3(x + 2)=3x +6

Then you have to move the 6 to the other side and it will become negative. 3x= -6 +21

Then you subtract 21-6 to get 15. 3x = 15

Then you are left with 3x = 15.

Divide 3 from both sides and you get x =5.

The angle of elevation of a cloud from a point 60m above a lake is 30" and the angle of
depression of the reflection of the cloud in the lake is 60° find the height of the cloud from
the surface of the lake.
(THIS QUESTION IS FROM INDIA PRE BOARD EXAM)​

Answers

Answer:

80 m

Step-by-step explanation:

Answer

answer

Answer

What is 20% less than 18.5?

Answers

Answer:

15.5

Step-by-step explanation:

Answer:

14.8

Step-by-step explanation:

20% less than 18.5 is  14.8

How would you find x?

Answers

Answer:

A

Step-by-step explanation:

x=7

REALLY URGENT!!!!! ANSWER FAST!!!!

Answers

Answer:

if am sure it's A

Step-by-step explanation:

An earthquake wave travels through 55 km of rock in 25 seconds . Which equation represents the relationship between t, the number of seconds, and d, the total distance the wave travels?

Answers

Answer:

2.2 m/s

Step-by-step explanation:

Step one

Given data

An earthquake wave travels through 55 km

hence distance = 55 km

time taken = 25 seconds

Required

the expression relating t and d

Step two:

we know that velocity is

Speed= distance/time

speed= 55/25

Speed= 2.2 m/s

Follow the directions to solve the system of equations by elimination. 8x + 7y = 39 4x – 14y = –68 Multiply the first equation to enable the elimination of the y-term. Add the equations to eliminate the y-terms. Solve the new equation for the x-value. Substitute the x-value back into either original equation to find the y-value. Check the solution. The solution to the system of equations is (, ).

Answers

Answer:

1/2,5

Step-by-step explanation:

Answer:

1/2     5

Step-by-step explanation:

just got it right on edge

What is the answer please hurry

Answers

Answer:

I dunno

Step-by-step explanation:

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