Casey wants to determine whether the rate at which melted glass cools affects the strength of the glass. He pours melted glass into a form and cools the glass at different rates. Then, he tests the breaking strength of each form. Which of the following is the test variable in this experiment?

A. type of glass
B. strength of the glass
C. thickness of the glass
D. cooling rate of glass

Help if you know and are sure!

Answers

Answer 1

D

"What is a variable?

A variable is used in a Fair Test. A variable is any one of the elements of the test which could be changed. They can change the outcome of an experiment.

In a fair test, only one variable is allowed to be manipulated – all others have to be kept the same,or “controlled”."


Related Questions

1.Suppose a car is traveling east on 4th Street and turns left onto King Avenue heading northeast What is the measure of the angle created by the car's turning?

2.Suppose a car is traveling southwest on King Avenue and turns left onto 3rd Street What is the measure of the angle created by the car's turning?

3.Suppose a car is traveling northeast on King Avenue and turns right onto 3rd Street. What is the measure of the angle created by the car's turning? ​

Answers

Answer:

4th street

Step-by-step explanation:

Sorry but I only have an anwser for the first one

The measure of the angle created by the car's turning is 105°

Step-by-step explanation:

  Given :  a car is traveling east on 4th Street and turns onto King Avenue heading northeast.

We have to calculate the measure of the angle created by the car's turning.

Since, car is travelling in east direction on 4th street that is from A to D as shown below in image by arrow.

Then at point B, the car turns toward King Avenue heading northeast. that is B to C as shown below in image

Since, we need to calculate  the measure of the angle created by the car's turning that is measure of ∠ABC.

AD is a straight line, thus measure of any angle  at line segment AD is 180° as angles on one side of a straight line always add to 180 degrees

Therefore, at B,

∠ABC + ∠CBD = 180°

Aldo given , ∠CBD = 75°

Thus, the measure of ∠ABC is ,

⇒ ∠ABC  = 180° -∠CBD

⇒ ∠ABC  = 180° - 75°

⇒ ∠ABC  = 105°

Thus, the measure of the angle created by the car's turning is 105°

How many cups do 5 quarts of milk contain?

Answers

Answer:

20

Step-by-step explanation:

Answer:20 cups

Step-by-step explanation:5 quart = 20 cup

Help please 6th grade math

Answers

Answer:

A and C

Step-by-step explanation:

By letting x = 0 she is eliminating the terms in x , rather than simplifying

A

9x - 3x - 4 ← collect like terms

= 6x - 4

B

12x - 4 ← already in simplest form

C

5x + x - 4 ← collect like terms

= 6x - 4

Thus A and C are equivalent expressions

Show the work please

Answers

its 16x^2 i'll give explanation in a second

HELP PLEASEEEEEEE!!!!

Answers

Answer: it’s 0.796

Step-by-step explanation:

the question is below

Answers

that angle would also be 45

Answer: 45

Step-by-step explanation:

90-45 is 45 because there’s a right angle which is 90 degrees and these two angles both stem from that right angle so then the two would be equal to 90. It’s called complementary angles.

joey made an deposit into an account that earns 6% simple interest. after 3 years joey had earned 400$. how much was joey's initial deposit ?

Answers

I= prt
I=$400 (0.06) (3)
I= 72
The 6% was changed into a decimal (0.06)
So I multiplied 400 x 0.06 x 3
The 400 would be the principal amount the 6% would be the rate and the 3 would be the time

If q (x) = 2(x - 1)^2+ 5, what is the value of q (-3)?

A. 13
B. 23
C.37
D. -3

Answers

Plug in -3 for x and you will get 37
Answer: your final value would be c 37

In which set do all of the values make the inequality 2x-1<10 true?

A. {10,15,20}

B. { 5,7,9}

C. {4,6,8}

D.{2,3,4}

struggling :(

Answers

Answer:

d

Step-by-step explanation:

10+1 > 2x

11 > 2x

11÷2 > x

5.5>x

in answer a we have 10>5.5

in b 5

in c 6

A and Cccccccccccccccccccccc

Find the value of x, Problem is below. Solve correctly for brainiest and 5 stars!

Answers

x + 2x + 21 = 180
3x = 159
x = 53°

Draw a line of fit using (15,25) and (5,35)

Answers

Answer:

your right

Step-by-step explanation:

you had it right nothing to do

someone help me with my math...no bias answers, please

Answers

Answer:

61.8m^2are

Step-by-step explanation:

3 times 9 = 27

you multiply that two more times because there are 3 of them. So now we have 54 m.

Now we find the area of the triangles

area = 1/2 base times height

1/2(2.6) * 3

1 * 2.6 * 3/2

2.6 * 3/2

7.8/2

3.9

3.9 times 2 because there  two triangles

7.8 + 54 = 61.8 m^2

PLSSS HELPPPPPPP CORRECT ANSWERS PLSSSS

Answers

Answer:

59

Step-by-step explanation:

The answer would have to be 59

I DONT KNOW THE ANSWER, I accidentally clicked, ill give brianliest!

Answers

Answer:it’s b

Step-by-step explanation:

Answer:

C) 13 inches

Step-by-step explanation:

The radius is half the diameter. Since the diameter is 26, evident from the circumference being 26pi, half of 26 is 13.

5. Here is a shape with some measurements in cm.

Answers

Answer:

Just saying that there are links people post that scam you and this is requird by Brainly

Step-by-step explanation:

The table is completed below.

We can say that the relationship between the scale factor and the area of scaled copies is proportional.

What is a triangle?

A triangle is a 2-D figure with three sides and three angles.

The sum of the angles is 180 degrees.

We can have an obtuse triangle, an acute triangle, or a right triangle.

We have,

Using the formula for the area of a triangle:

Area = 1/2 x base x height

With a base of 3cm and height of 2cm, the area of the original triangle is:

Area = 1/2 x 3cm x 2cm = 3cm²

To find the area of the scaled triangles, we can use the scale factor to determine the corresponding dimensions, and then calculate the area using the same formula.

Scale factor Corresponding dimensions Area

1                         3cm x 2cm               3cm²

2                         6cm x 4cm                12cm²

5                        15cm x 10cm               75cm²

s                        3s cm x 2s cm             3s² cm²

Now,

To see if the relationship between the scale factor and the area of scaled copies is proportional, we can calculate the ratio of the area to the scale factor for each row of the table:

Scale factor Corresponding dimensions Area Ratio of area to scale factor

1                             3cm x 2cm             3cm²          3/1 = 3

2                             6cm x 4cm             12cm² 12/2 = 6

5                                 15cm x 10cm      75cm² 75/5 = 15

s                            3s cm x 2s cm     3s² cm²  (3s²)/s = 3s

In each case, the ratio of the area to the scale factor is constant, which means that the relationship between the scale factor and the area of scaled copies is indeed proportional.

Therefore,

We can say that the relationship between the scale factor and the area of scaled copies is proportional.

Learn more about triangles here:

https://brainly.com/question/25950519

#SPJ2

CAN SOMEOEN HELP M E PLEASE STOP SEDING ME LINKS YOUR NOT HELPFUL AT ALL AD YOUR JUST STEALING POINTS FOR WHAT I NEED HELPL.

Answers

Answer:

ok im not 100% sure but i think it can hold only 2 animals soo

Step-by-step explanation:

first you send across two lions, then two wildabeasts then one lion and one wildabeast

Mr. Peralta had $300 in his savings account in March. He continued to add money to his savings account and by August, the value of the savings account had increased by 20%. How much money is in Mr. Peralta’s account in August?
Identify and label the point on the double number line that represents the original amount of money in Mr. Peralta's savings account.

Answers

Answer:

ima say $360.correct me if im wrong-^-

Step-by-step explanation:

The total amount of money in Mr. Peralta's savings account is $360.

What is the percentage?

A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.

Given, Mr. Peralta had $300 in his savings account in March.

By August, the value of the savings account had increased by 20%.

Let, 'x' be the total amount after an increase of 20%.

So, 120% of $300 is 'x'.

Therefore,

(120/100)×300 = x.

300×1.2 = x.

x = 360.

So, By august total money in his account is $360.

learn more about percentages here :

https://brainly.com/question/24159063

#SPJ2

substitute the variable and solve the problem
d=6 and k=2
(d+k) x 2

answer:
expression or equation:

Answers

Answer:

16

Step-by-step explanation:

d =6

k =2

( 6 + 2) × 2

8 × 2 = 16

Here is Laila’s graph from the previous screen.

Write your own equation in the form y=​mx+b that could represent Laila’s graph.

Answers

Answer:

y=-1/3x+8

Step-by-step explanation:

There is no need for any specific answers, but here is one that could logically work out. Since the graph is going left/down, it has a negative slope, so -1/3 would be reasonable. The graph doesn't cross the origin and crosses above it, so this equation must have a positive 'b' value. In this case, I chose 8. y=-1/3+8 could represent Laila's graph.

Can someone please help me out with this. Please don't just answer for points.

Answers

Answer:

m - n - 4

Step-by-step explanation:

9m + 4n - 1 - 6m - (n + 3) - (2m + 4n)

= m - n - 4

What would this be? Thanks for helping!

Answers

Answer:

if I remember correctly it would be a triangle.

Triangle would be the answer have a good day

ill get beaten just help me finish this thank you!

Answers

Answer:

C THE ANSWER IS C

Step-by-step explanation:

The table shows the number of bottles of different kinds of juice sold at a cafeteria on Monday.

If the cafeteria has 80 customers on Tuesday, which prediction for Tuesday is NOT supported by the data in the table?
Pls answer ASAP

Answers

Answer:C

First you need to add up everything to find out the amount of costumers more Monday. You will get 40. Then you would have to multiply 40 by 2 to get 80 which is the total amount of costumers for Tuesday. This means that you have to double the amount of everything on the table to find out how much of each item was sold. The questions says which is NOT supported by the table. When you do the math you see that everything is accurate except C because the number of apple juice sold on Tuesday is 22 and the number of cranberry juice sold on Tuesday is 14. 22 is not 6 times more than 14 which makes C the correct answer.

Expand and simplify these 12 questions

Answers

Answer:

1. 3x+15

2. 4x+36

3. 4x+36

4. 6x-2

5. 5x-10

6. 4x-24

7. 2x+1

8. 6x+21

9. 4x+16

10. 4x+10

11. x+4

12. 5x-10

To expand an equation, you can apply the distributive property

==> The distributive property, sometimes known as the distributive property of multiplication, tells us how to solve certain algebraic expressions that include both multiplication and addition.

CREDIT: prepscholar.com ^ for the definition of the distributive property

Select the three numbers that show 225% as an equivalent fraction, decimal, or percent. (Hint- There are three correct answers: you must choose three answers.)


A 225/50 B 225/100 C 9/4 D 0.225 E 2.25

Answers

Answer:

The answers are B, C and E

Step-by-step explanation:

B: You put it over 100

C: same fraction but mixed number and in simplest form

E: just divide by 100

Answer:

The correct answers are 2.25, 9/4, and 225%

Step-by-step explanation:

Help me on this question pls!!!!!

Answers

Answer:

i cant see the picture

Step-by-step explanation:

Brainliest included to the right answer

Answers

In order it should be:
Function
Not a function
Not a function
Function

Explanation:
In order to determine if the relation is a function, you have to check to see if each x value in the relation has only one y value. If there are multiple y values for a singe x value, then the relation is not a function.

whats M+R-A=? i need big help

Answers

Answer:

Hello Corey. Those are just variables, there is really no answer.

What uhhhh I don’t think that is a real question.

here’s another math question

Answers

Answer:

The correct value is A 2power 12

Answer:A is is right

Step-by-step explanation:[tex]2^{4}[/tex]

why because the eqation  [tex](2^{4})^3[/tex] is 4096 all we have to do is find the answer that has 4096  

The satemate [tex]2^{12}[/tex] is4096 and is the same as 4096 so it is there for  true

The satemate [tex]2^{9}[/tex] is 512 is not the same as 4096 there for it's false

The satemate [tex]2^{3}[/tex] is 8 and is not the same as 4096 and there for it is false

The satemate [tex]2^{8}[/tex] is 256 and is not the same as 4096 and there for it false

so the answer is a

pls answer im not smart when it comes to this

Answers

So in this you would just do 29 x 21 and once you get that answer you’d divide by 3 if not mistaken and you should get V=203

Don’t forget to add your units some teachers mark it wrong if you don’t :)

Answer:

203

Step-by-step explanation:

....

Other Questions
can someone help me Im stuck on this and cant figure it out At a bookstore Mrs.McIntyre buys three books, one for each of her children. Each book cost the same amount. She also buys $1.50 magazine for herself. Her purchases have a total price of $13.47. The equation 3x+1.50=13.47 models this situation. Solve this equation for x. Explain what this value of x means in terms of the bookstore purchases. A native of San Antonio, he represented Texas' 20th District in the U.S. Congress from 1961-1999, and now has a convention center named for him in his hometown. Who was he?A) Henry B. Gonzales B) Garner C) Sam Rayburn D) Sul Ross Which best describes the energy of a sound wave as it travels through a medium? It increases.lt decreases. It remains the sam.It depends on the medium, World war 2 history question please help me!which of the following best describes the u,s, governments response to the flood of jewish refugees fleeing nazi persecution and genocide before and during world war ii what simple machine would be best for lifting a couch through a 3rd floor apartment window? The number of peopie that have "liked" Mindy's Candy Store website can be represented by y = 270(1.65), where t is the number of weeks after areview in a national magazine. Interpret the parameters of the equation. Make aprediction about the future number of likes on the web site. Here is the skeleton reaction for combustion of methane (natural gas)CH4+O2CO2+H2OWhat are the reactants of this reaction?Please help me :( Some scientists claim recent evidence suggests birds should be reclassified to share more taxonomic groups with dinosaurs. What type of evidence would provide the best support for this claim?A.evidence showing birds shared similar habitats with dinosaursB.evidence showing birds shared similar nutritional requirements as dinosaursC.evidence showing birds shared similar behaviors with dinosaursD. evidence showing birds shared a common genetic history with dinosaurs Pedro is building a playground in the shape of a right triangle. The base of the triangle is 18 yards. The height of the right triangle is 2 1/3 yards. Find the area of the triangular playground. here are the options2and41and53and6 The figure below shows a shaded circular region inside a larger circle:A shaded circle is shown inside another larger circle. The radius of the smaller circle is labeled as r and the radius of the larger circle is labeled as R. On the right side of the image is written r equal to 3 inches and below r equal to 3 inches is written R equal to 5 inches.What is the probability that a point chosen inside the larger circle is not in the shaded region? 24% 36% 50% 64%PLS NO LINK thanks :) Find an expression to represent the area of the triangle below. Last year, Jackson bought a brand new car for $47,500. If the car depreciates in value by 20% each year, what will the car be worth when it is 8 years old? Find the mean absolute deviation of the setback of data. 9, 12, 3, 5, 8 An ounce is equal to about 28 g. If 1 g of soil contains 2.5 billion bacteria, how many bacteria are in 1 oz of soil? A student is given a tissue sample to examine under a microscope . Which of the following would be evidence that the tissue sample she's examining is from a plant?1. Prokaryote , cell wall 2.Eukaryote, cell membrane, presence of mitochondria 3. Prokaryote , cell membrane , presence of a flagellum 4. Eukaryote , cell wall , presence of chloroplasts Ethan makes punch by mixing orange juice withsparkling water. He uses the same ratio of orange juiceto sparkling water each time he makes punch. The tableshows some of the amounts of orange juice andsparkling water he uses for different amounts of punch.Orange Juice (fl oz) 7 21 28 ?Sparkling Water (fl oz) 4 12 16 28If Ethan uses 28 fl oz of sparkling water, how much orange juice will he use and what will be the total amount of punch? Use the number pad to enter your answers in the boxes.Ethan will use ____fl oz of orange juice, and he will have a total of ___fl oz of punch. Suppose the United States decides to reduce export subsidies on U.S. agricultural products, but it does not decrease taxes or increase any other government spending.Initially, a reduction in export subsidies decreases net exports at any given real exchange rate, causing the demand for dollars in the foreign exchange market to decrease. This leads to a decrease in the real exchange rate, which, in turn, decreases imports to negate any decrease in exports, leaving the equilibrium quantity of net exports and the trade deficit unchanged at this point.1. However, the reduction in expenditure on export subsidies ___________ the fiscal deficit, thereby ___________ public saving.2. Indicate the effect this has on the U.S. market for loanable funds. (Supply and demand shift?)3. Given the change in the real interest rate, show the effect this has on net capital outflow.4. This causes the supply of dollars in the foreign exchange market to ______________, the real exchange rate to ______________, and the equilibrium level of net exports to _____________. Find the area of the trapezoid. Leave your answer in simplest radical form.5 cmNot drawn to scaleA.94.5 cmB.31.5 cmc.7 cmD.81 cm