A teacher would like to study how students' seating locations in the classroom affects their test scores. If he were
creating an experiment, which of the following are part of an appropriate experiment? SELECT ALL THAT APPLY.
A)He would choose a random sample of students from all of his classes to collect data,
B) He would track the test scores of certain students in their current seat locations, then move their seats and continue to track their
test scores
C) He would record students' test scores as well as their seat locations,
D) At the end of the study, he would conclude causation,
E) He would follow one student's test scores and keep her seat the same the entire semester

Answer:

After 10 days rocky and robin will log the same number of met miles which will be 60 miles.

Step-by-step explanation:

This is because by using y=mx+b and graphing the two equations you can find their intersection which is (10,60).

Given :

Number of hours studied daily , [tex]T=5\dfrac{2}{3}[/tex] .

Time given for science and mathematics is , [tex]t=2\dfrac{4}{2}[/tex] .

To Find :

How much time does she devote for other subjects .

Solution :

Let , time devote for other student is x .

So , Time left for other subject = Total time - Time taken by science and mathematics .

[tex]x=T-t\\\\x=5\dfrac{2}{3}-2\dfrac{4}{2}\\\\x=\dfrac{(5\times 3)+2}{3}- \dfrac{(2\times 2 )+4}{2}\\\\x=\dfrac{17}{3}-4\\\\x=\dfrac{17-(4\times 3)}{3}\\\\x=\dfrac{5}{3}=1\dfrac{2}{3}[/tex]

Therefore , time devote for other subject is [tex]1\dfrac{2}{3}[/tex] hours .

Hence , this is the required solution .

Answer:

-(33+110z)/10z

Step-by-step explanation:

(-7/2z +4)+(1/5z -15)

from BODMAS, solving the one in the bracket

First(-7/2z +4)+(1/5z -15)

Find the Lcm

[-7/2z +4] +[1/5z -15]

(7+8z)/2z +(1-75z)/5z

find the Lcm which is 10z

[5(-7+8z) + 2(1-75z)]/10z

[(-35+40z)+(2-150z)]10z

(-35+2+40z-150z)/10z

(-33-110z)/10z

-(33+110z)/10z

The sum of the expression {(-7/2z) + 4} + (1/5z) - 15} is - 6/5z - 11.

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

The sum of {(-7/2z) + 4} + (1/5z) - 15}.

= (-7/2z) + (1/5z) + 4 - 15.

= (-14 + 2)/10z - 11.

= - 12/10z - 11.                                    (LCM of 2z and 5z is 10z)

= - 6/5z - 11.

learn more about numerical expressions here :

https://brainly.com/question/29199574

#SPJ2

Answer:

Step-by-step explanation:

False. They may have some that are the same, but not all.

Answer:

the answer is false hope this helped :)

Answer:

He is incorrect.Because if they are irrational they are the opposite.

Step-by-step explanation:

Answer:

3 * 1.4 = 4.2

Answer:-3

Step-by-step explanation:

Answer:

-11/5

Step-by-step explanation:

-4/5 - 7/5 = (-4-7)/5 = -11/5

Given :

Mr. Rivera pours 2 cups of blue paint into a jar for each art station.

1 cup = 8 ounces.

1 gallon = 128 ounces.

To Find :

How many jars can  he fill with 1 gallon of blue paint.

Solution :

Since, a jar is filled with 2 cups.

1 jar = 2 × 8 = 16 ounces.

So, number of jars required to fill 1 gallon of blue paint is :

[tex]n=\dfrac{128}{16}\\\\n=8[/tex]

Therefore, 8 jars are required to fill 1 gallon of blue paint.

Hence, this is the required solution.

Answer:

option d is the rut answe

Answer:

250 messages

Step-by-step explanation:

Cost per message: $0.16

Maximum bill: $40

Maximum # of messages = $40/$0.16 = 250 messages

Hi there! :)

2t + 8 ≥ -4(t + 1)

Distribute the coefficient outside of the parenthesis:

2t + 8 ≥ -4(t) -4(1)

2t + 8 ≥ -4t - 4

Add 4t to both sides:

6t + 8 ≥ -4

Subtract 8 from both sides:

6t ≥ -12

Divide both sides by 6:

t ≥ -2.

Answer: t ≥  -2/3

Step-by-step explanation:

Answer: Each pizza costed $8.25

Step-by-step explanation:

You have to divide $41.25 / 5 to find the cost of each pizza

Answer:

I think it is - 1/2 by the way love ur profile picture and username

Answer:

14

Step-by-step explanation:

5-6=1

15-1=14

Answer:

263,267

Step-by-step explanation:

473/2 is 263.5 and so just add .5 to one and subtract .5 from the other

Answer:

x= 1.79

Step-by-step explanation:

x-0.63=1.16 add 0.63 to both sides

x= 1.79

Answer:

x =1.79

Step-by-step explanation:

x -0.63 = 1.16

Add .63 to each side

x -0.63+.63 = 1.16+.63

x =1.79

Answer: Directly proportional relationships they always pass through the origin (0,0). There are other linear relationships that dont pass through the origin.

Answer:

X = - 7/2 or -6

Step-by-step explanation:

2x^2 + 19x + 40 = -2

2x^2 +19x + 40+2 = 0

2x^2 + 12x +7x+42= 0

2x(x+6) 7(x+6) =0

(2x+7) (x+6) = 0

2x+7 = 0

2x = -7

2x÷2=-7÷2

X= -7÷2 and

X+6=0

X=-6

Answer:

1.4

Step-by-step explanation:

you need to multiply 1400 by 0.001 because 1 gram is the equivalent to 0.001 kilograms

Answer:

1.4

Step-by-step explanation:

Answer:

20 is 1/10 of 200

Step-by-step explanation:

20* 10 = 200

Answer:

the answer is 200/1

Answer:I believe it's 31,771

Step-by-step explanation: you first need to add 8,999 + 2,387 to get 11,386 then add 11,386 + 11,386 to get 22,772 and then add 8,999 to get 31,771.

Scott earns $31,771 altogether during those three months.

Arithmetic operations can also be specified by the addition, subtract, divide, and multiply built-in functions.

+ Addition operation: Adds values on either side of the operator.

For example 4 + 2 = 6

We have to determine that Scott earn altogether during those three months.

We have been given that in January, Scott earned $8,999.

In February, he earned $2,387 more than in January.

So we have to add the amount of January and 2,387, we get

⇒ 8,999 + 2,387 = 11,386

In March, Scott earned the same amount as in February.

So the amount of March = 11,386

Therefore, He earns altogether during those three months as

⇒ 8,999 + 11,386 + 11,386

Apply the Addition operation in the above expression,

⇒ 31,771

Hence, Scott earns $31,771 altogether during those three months.

Learn more about Arithmetic operations here:

brainly.com/question/25834626

#SPJ2

Hey there! I'm happy to help!

Let's call the length and width L and W respectively.

L=2W+8

2W+2L=124

We plug our value of L into the second equation and solve for W.

2W+2(2W+8)=124

We undo the parentheses with the distributive property.

2W+4W+16=124

Combine like terms.

6W+16=124

Subtract 16 from both sides.

6W=108

Divide both sides by 6.

W=18

We plug this W value into the first equation to solve for L.

L=2(18)+8

L=36+8

L=44

So, the length is 44 feet and the width is 18 feet.

Have a wonderful day! :D

Answer:

Step-by-step explanation:

We are expected to solve for the change given the following values of x

0,h

so we substitute x= 0 and x=h in the given expression, get the result, and subtract the results from each other

for x=0

[tex]g(x) = 4 x + 7\\\\g(0)=4(0)+7\\\\g(0)=0+7\\\\g(0)=7[/tex]

for x=h

[tex]g(x) = 4 x + 7\\\\ g(h)=4(0)+7 \\\\g(h)=4h+7 \\\\g(h)=4h+7[/tex]

The change would be

[tex]g(h)-g(0)= (4h+7)-7\\\\g(h)-g(0)= 4h+7-7\\\\g(h)-g(0)= 4h[/tex]

Kerry will earn $244.50 in total.

It is a method where we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit.

Steps to Use Unitary Method

First, let us make a note of the information we have. There are 5 ice-creams. 5 ice-creams cost $125.

Step 1: Let’s find the cost of 1 ice cream. In order to do that, divide the total cost of ice-creams by the total number of ice-creams. The cost of 1 ice-cream = Total cost of ice-creams/Total number of ice-creams = 125/5 = 25. Therefore, the cost of 1 ice cream is $25.

Step 2: To find the cost of 3 ice-creams, multiply the cost of 1 ice cream by the number of ice-creams. The cost of 3 ice-creams is cost of 1 ice-cream × number of ice-creams = 25 × 3 = $75. Finally, we have the cost of 3 ice-creams i.e. $75.

Given:

Kerry charges $25.50 per lawn to cut grass on Saturdays

and $28.50 per lawn to cut grass on Sundays.

If 4 lawns cuts in Saturday then the charges would be

=25. 50 x 4

=102

and, If 5 lawns cuts in Sunday then the charges would be

=28. 50 x 5

=142.5

Hence, the total she will earn 244.50.

Learn more about unitary method here:

https://brainly.com/question/22056199

#SPJ2

Answer:

32

Step-by-step explanation:

8*8=64

8+8+8+8=32

(because there are 4 sides)

Answer:

32

Step-by-step explanation:

Answer:

The expression is not factorable

with rational numbers

Answer:

4×1000000 6×100000 7×10000 2×1000

Step-by-step explanation:

Answer:

[tex]4.672 * 10^{6}[/tex]

Step-by-step explanation:

move the orginial number 6 decimal points to the left to determine its scientific notation

4672000

467200.0

46720.00

4672.000

467.2000

46.72000

4.672000

Answer:

The shortest driving distance between stadium and high schools is 5.831 units.

Hey there!☺

[tex]Answer:\boxed{\frac{4}{33}}[/tex]

[tex]Explanation:[/tex]

[tex]\frac{1}{6}/1\frac{3}{8}[/tex]

Let's divide both fractions.

[tex]\frac{1}{6}1/\frac{3}{8}=\frac{4}{33}[/tex]

[tex]\frac{4}{33}[/tex] is our final answer.

Hope this helps!

Answer:

$345

Step-by-step explanation:

35(15)-180

345