A teacher interested in determining the effect of a new computer program on
learning to read conducted a study. One hundred students were randomly assigned
to one of two groups. The first group used the computer program while the second
group did not. Both groups were tested to determine how much their reading levels
improved. The results for the two groups were compared. What kind of study is this?
(2 points)
1) This is an experiment because a treatment was applied to a group.
2)
This is an experiment because students were able to choose which group to
join.
3) This is a survey because students were randomly assigned to groups.
4) This is a survey because a treatment was applied to both groups,

Answer:

20

Step-by-step explanation:

Well consecutive numbers mean that the 3 numbers will follow each other in smallest to largest.

Example : 6, 7, 8 or 6,34,87

Non-Example : 7, 9, 6

As long as the number is greater than the one before it they are consecutive.

Following this rule I have come up with the numbers :

10, 12, 20

These three numbers are consecutive and equal to 42.

Now to find the largest number in this set just look at the greatest value which would be 20.

I don't have an entire explanation for this as I just did it in my head but I do hope it is correct.

I hope this helps! :)

Answer:

$240

Step-by-step explanation:

I = prt

I = (2,400) (0.04) (2.5)  

note: I changed 4% to a decimal and 30 months to 2.5 years

I = 96 (2.5)

I = 240   <-- The interest

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The simple interest accumulated on a principal of $ 2,400.00  at a rate of 4% per year for 2.5 years (30 months) is $240.00.

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* Last time I did interest was in 6th grade and I don't remember much. So I am very sorry if my answer is wrong *

Answer:

42

Step-by-step explanation:

14(3)

Answer:

42

Step-by-step explanation:

first, substitute 3 for y in 14y. 14y means you are multiplying 14 and y, so when you plug in 3 for y, you're multiplying 14 and 3! :)

simplify by multiplying 14 · 3.

so, when y = 3, 14y = 42.

you can check the answer by solving for y in 14y = 42.

divide both sides of the equation by 14.

after dividing, you're left with y = 3. that means 14y does indeed equal 42 when y = 3! :)

i hope this helps! have a great rest of your day <3

Answer:

44

Step-by-step explanation:

Answer:

y = 1.25x + 6

m = 1.25

b = 6

Step-by-step explanation:

Answer:

Multiplying factors whose products are multiples of 10 add to the number of zeros when factors are multiplied as multiples of 10s.

Step-by-step explanation:

Let the first five multiples of ten be

10*1= 10

10*2= 20

10*3=30

10*4=40

10*5= 50

Suppose we chose 20 and 50.

Now multiplying 20 with 50 we get

20*50= 1000

IF we count the total number of zeros in the factors ( 20 and 50) they are 2.

But the number of zeros in the product (1000) are 3.

This is because when we multiply 2 with 5 we get 10 which adds to the existing number of zeros ( i.e 2) and we get a total of 3 zeros.

And multiplying 10 with 50 we get

10*50= 500

IF we count the total number of zeros in the factors ( 10 and 50) they are 2.

But the number of zeros in the product (500) are also 2.

This is because when we multiply 1 with 5 we get 5 which does not add to the existing number of zeros ( i.e 2) and the total number of zeros remain the same.

Similarly multiplying 20 with 30 we get

20*30= 600

IF we count the total number of zeros in the factors ( 20 and 30) they are 2.

But the number of zeros in the product (600) are also 2.

This is because when we multiply 2 with 3 we get 6 which does not have a zero and the total  number of zeros remain the same as in the factors.

So we see that multiplying factors whose products are multiples of 10 add to the number of zeros when factors are multiplied as multiples of 10s.

Answer: See explanation

Step-by-step explanation:

I think your question isn't well written and that 234 was meant to be 2.34 and 112 was meant to be 1.12

Let the amount spent on tomatoes be x.

The information given in the question can then be used to form an equation as thus:

Apples + Peaches + Tomatoes = $9.63

(2.34 × $1.32) + (1.12 × $1.20) + x = $9.63

$3.0888 + $1.344 + x = $9.63

x = $9.63 - ($3.0888 + $1.344)

x = $9.63 - $4.4328

x = $5.1972

The amount spent on tomatoes will be $5.1972

Answer:

The answer is 4.2 I did this question already

Step-by-step explanation: You multiply 2 3/4 and 1.32 and then add that to the product of the 1 1/2 peaches for 1.20 per pound, then subtract the answer from 9.63 to get the solution for x.

Answer:

1.28

Step-by-step explanation:

x = 1.28

Answer:

-20

Step-by-step explanation:

(y - 6) / (-3-4) = -2

(y-6)/7=-2

y-6=-2*7

y=-14-6 =-20

Answer:6

Step-by-step explanation:

The total number of blocks is 42 and the number of rows is 7. So the equation would be 42 ÷ 7. So, 42 ÷ 7 = 6. There are 6 blocks in each row

Answer:

first box - 2.10

second box - 2.14

Answer:

2.10 & 2.14

Step-by-step explanation:

its basic adding by 2 yk

Answer:

The answer is 60 dollars, that's what I got

Answer:

39 cars/hour

Step-by-step explanation:

We are trying to find the rate of cars/hour. So we need to divide the amount of cars by the amount of hours.

273/7 = 39

The wash detailed cars at a rate of 39 cars per hour.

Answer:

he can afford 5 lines

Step-by-step explanation:

work here if needed

170 - 120 is 55

55 / 10 = 5.5 or 5

Answer:

a

Step-by-step explanation:

Answer:  A  

Step-by-step explanation: this is too easy  

Answer:

12/20

Step-by-step explanation:

Cos is adjacent/hypotenuse. 12 is adjacent to angle C and 20 is the hypotenuse. 12/20 is the cosine of C.

Answer:

−24x−18

Step-by-step explanation:

−6(4x+3)

=(−6)(4x+3)

=(−6)(4x)+(−6)(3)

=−24x−18

Answer:

-24x + -18

Step-by-step explanation:

-6 x 4 = -24

-6 x 3 = -18

making the expression -6(4x + 3) into

-24 + -18

hope this helped!

Answer:

C) y=x+3

Step-by-step explanation:

I did it and got it right

Answer:

The independent variable is the number of bushels of corn with the dependent variable being the cost per bushel.

Step-by-step explanation:

The dependent variable depends on the independent variable. The cost per bushel depends on the availability of bushels.

Answer:

18 cm^2

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

8 is the correct answer.

Answer:

8

Step-by-step explanation:

Answer:

$ 36.25

Step-by-step explanation:

1.25 x 9 = 11.25 + 25.00 = $ 36.25

Answer:

Step-by-step explanation: The commission will be a total of $11.25.

the commission would cost $11.25

Answer:

I'm not sure sorry if I'm wrong but I think the answers would be 3,4,5

Answer:

A = 974

Step-by-step explanation:

The formula for surface area of a rectangular prism is A=2(wl+hl+hw)

so yeah enjoy freedom for the rest of the day

Answer:

974 inches2

Step-by-step explanation:

Surface Area = 2×(11×8 + 11×21 + 8×21) = 974 inches2