Plz :<
In a science experiment, the temperature of a substance is changed from 42 degrees Fahrenheit to -54 degrees Fahrenheit at an average rate of -12 degrees per hour. Over how many hours does this change take place? *
10 points

A -8 hours
B. 1/8 hour
C. 1 hour
D. 8 hours

Answers

Answer 1

Answer:

D 8 hours

Step-by-step explanation:

it has to be positive and it is obviously more than 1 hour so it has to be 8 hours by process of elimination.


Related Questions

There are 9 bottles of juice on a shelf. Each serving of juice is 15 of a bottle.

How many servings of juice are there in the bottles on the shelf?

I donthave time to work these out so please help :)

Answers

Answer:

135

Step-by-step explanation:

Thomas decides to use the method of proportions and similar
triangles to find the height of a lamppost. He measures the length of
the post's shadow and finds it is 5 feet long. Then, he holds a 1-foot
ruler perpendicular to the ground and finds that it casts a 2-inch
shadow. How tall is the lamppost?
a. 2.5 ft c. 30 ft
b. 12 ft d. 60 ft

Answers

Answer:

C. 25

Please mark brainiest

Step-by-explanation:

I believe it is A 2.5

If you have time... HELP

Answers

Answer:

8/5

Step-by-step explanation:

opposite reciprocal

flip sign ±

flip numerator and denominator

The cost of a service call to fix a washing machine can be expressed by the linear function y = 45 x + 35, where y represents the total cost and x represents the number of hours it takes to fix the machine. What does the y-intercept represent?

Answers

The y intercept is the price of them coming to the home

Answer:

dont take my word for it, but i think its B.

Step-by-step explanation:

Pls help....due 11:59 do (not do numbers 1,2,3,4,6,9,11, and 12)

Answers

Answer:

5-24.97

7-92.31

8- -14.16

Step-by-step explanation:

Answer:

Step-by-step explanation:

1) 8.53

2) -10.46

4) -5.05

5) 24.97

7) 92.31

8) -14.16

10) 6.42

11) 14.64

13) 6.7

14) 9.9

Is this right? I chose 15.

Answers

Answer:

Correct, it is 15

Step-by-step explanation:

Because 3 turns into 9, you also want to multiply the other by 3, so you’d do 5x3 to get 15

Answer:yes you are correct. The answer is 15

Step-by-step explanation:

You would have to do 9/3=x/5. If you simplify that it would be 3x=45. If you simply further, you would get x=15 so yes you are correct.

What does an “Indian reservation” do to the Right of Occupancy?

Answers

Answer:

lol 2 months later

Step-by-step explanation:

If x (x+y) = 27 and y (x+y) = 54, what is the value of (x+y)^2?

Answers

Answer:

9x^2

Step-by-step explanation:

It is given that:

x ( x + y ) = 27

If one manipulates the equation, by dividing by x, they get:

x + y = 27/x

It is also given that:

y ( x + y ) = 54

Again, manipulate the equation, only this time, divide by y,

x + y = 54/y

It is obvious that;

x + y = x + y

Yet this was proven;

x + y = 27/x

x + y = 54/y

Therefore, the following has to be true;

27/x = 54/y

To sove the proportion, use cross products;

27/x = 54/y

54x = 27y

Inverse operations:

54x = 27y

/27     /27

y = 2x

Substitute;

(x + y)

y = 2x

= (x + 2x)

= 3x

Now solve:

(3x)^2

9x^2

If x=27 and y=54, add them together then multiply by 2 and get 162

Which expression is equivalent to − ¾ ÷ (−8 ½)?

A − ¾ × (-2/17)

B− ¾ × 8 ½

C ¾ × 17/2

D ¾ × (−8 ½ )

Answers

A Can u pls answer my latest question

What is the slope for this scenario?

-500
-250
-1/4
200

Answers

Answer:

slope = -250

Step-by-step explanation:

Use the two points with the blue and beige segments.

The point to the right has coordinates (8, 6000).

the point to the left has coordinates (4, 7000).

slope = rise/run = (difference in y)/(difference in x)

slope = (6000 - 7000)/(8 - 4)

slope = -1000/4

slope = -250

-250 lol yea anyways

PLEASE HELP ME ;-; ILL MARK AS BRIANLIEST IF ITS RIGHT
The event coordinator asks you to determine how many students participated in the
track-and-field day. The total number of students in seventh and eighth grade
combined is 584; 5/8 of them are seventh graders and 3/8 of them are eighth-graders. If 4/8 of the seventh graders participated in track-and-field day and 7/8 of the eighth graders participated, about how many total students participated? Describe the process you used to find your answer.

Answers

Answer:

374.125 students. Not sure if you're supposed to round up or down considering you can't have a fraction of a person, but I would round down.

Step-by-step explanation:

(5/8) (584) = 365 seventh graders in total

(3/8) (584) = 219 eighth graders in total

(4/8) (365) = 182.5 seventh graders who participated in track-and-field day

(7/8) (219) = 191.625 eighth graders who participated in track-and-field day

182.5 + 191.625 = 374.125 students in total who participated

Answer:

First, I took 5/8 out of 584 for the seventh graders which came out to 365 seventh graders. Then, I did the same thing with 3/8 and it came out to 219 eighth graders. Then I took out 4/5 out of 365 which resulted as 292. Then I did the same thing for 7/8 and the results came out as 191. So in total 483 students participated in track-and-field day.

Step-by-step explanation:

What is one-half divided by one-eight?
Please use fractions
I'll give brainliest if it's right and first

Answers

Answer:

4

Step-by-step explanation:

Change the division sign to a multiplication sign and flip 1/8.

Answer: 8/2 IS YOUR ANSWER

OTHERWISE KNOWN AS 4

Step-by-step explanation:  Brainliest please and thanks.

PLEASE HURRY, BRAINLIEST??
Jude graphed the inequality s

A number line going from negative 12 to negative 4. A closed circle is at negative 9. Everything to the left of the circle is shaded.

Is his graph correct? Explain why or why not.

Answers

Answer:

Sample Response: No, Jude’s graph is incorrect. The inequality symbol is “less than,” so -9 is not included. He should have used an open circle on -9.

Step-by-step explanation:

Answer:

No, Jude’s graph is incorrect. The inequality symbol is “less than,” so -9 is not included. He should have used an open circle on -9.

Step-by-step explanation:

ASAP DINT ANSWER IF YOU DONT DO ALL BRAINLEST TO THE ORECT ANSWERS

Answers

Answer:

The first one towards the left, or the green triangle, would be 70 degrees.

The second one, or the one in the middle, would be 108 degrees.

The last one, or the yellow triangle, would be 65 degrees.

when cheenu was a boy he could run a 15 miles in 3.5 hours when he was an old man he could walk a 10 miles in 4 hours what is the difference between the time

Answers

I think that the answer to this would be years later! Please correct me if Im wrong!

:)

Brainliest?

When Cheenu was a boy he could run 4.28571mph, when he’s older, he can run 2.5mph. That’s a difference of 1.78571mph

Select the correct answer from each drop-down menu.
Claire is on a business trip. She’ll be traveling from Liverpool, England, to Melbourne, Australia.
The latitude value of Liverpool is 53.41 degrees, and the longitude value is -2.99 degrees. The latitude value of Melbourne is -37.81 degrees, and the longitude value is 144.96 degrees. The two cities are
degrees apart in latitude. The two cities are
degrees apart in longitude.

Answers

Answer:

the difference in latitude is 91.22°

the difference in longitude is 147.95°

Step-by-step explanation:

For Liverpool, London. The latitude is 53.41°, longitude is -2.99°

For  Melbourne, Australia. The latitude is -37.81°, longitude is 144.96°

The negative or positive magnitude of their values shows their position on either sides of the origin of the latitude (equator) and the origin of the longitude (prime meridian).

The latitude measures the relative position of a point, north or south of the equator (latitude 0°). The longitude measures the relative position, east or west of the prime meridian (longitude 0°)

the difference in latitude is 53.41° - (-37.81°) = 53.41° + 37.81° = 91.22°

the difference in longitude = 144.96° - (-2.99°) = 144.96 + 2.99 = 147.95°

4. Is the relation represented on the graph a function? Explain

5. What is the slope of the line shown on the graph? Explain how you got your answer pls.

Answers

4. Yes because a function is a expression, rule, or law that defines a relationship between one variable and another variable which is what is happening in this image

5. Yes the slope is shown on the graph because it shows the measure of its steepness which can be determined by simply looking at the image

help with these 3 questions

Answers

1)A
2)C
3) A
I think so

Answer:

1. A

Step-by-step explanation:

You would need to multiply 20 times 60, which equals 1800, then divide 1800 by 300 which will get you 4 halves, then make them wholes and you get 2

Nick has $7.00. Bagels cost $0.75 each and a small container of cream cheese costs $1.29. Write an inequality to find the numbers of bagels nock can buy. Identify what your variable represents.

Answers

Answer:

$0.75x + $1.29 = $7.00The x represents the number of bagels Nick can buy

I hope this helps!

Help?
( this is not from a quiz. )
( also, this is science. )

my last question got answered and they told me answers not even related to the question.

Answers

Answer:

A

Step-by-step explanation:

if u count the number of spaces from the zero after the decimal point then make it negative becouse the zeros are behind it

A is the correct answer

Jerod is making candles from beeswax. He has 132.72 ounces of beeswax. If each candle uses 8.4 ounces of beeswax, how many whole candles can he make?
brainliest will be given!

Answers

Answer:

15 candles

Step-by-step explanation:

132.72÷8.4=15.8

therefore jerod can make 15 whole candles

hope this helps

RANDOM QUESTION
which came first
O the color orange.
O the fruit orange.

Answers

The color orange came before the fruit
The fruit came first as long as I know because the sanskrit word is naranga

Evaluate -(7-³)(7⁵)

A. -49
B. 49
C. 1/49
D. - 1/49

Answers

Answer:

A

Step-by-step explanation:

A
Fever hhh hIs the wayhsgsf

someone please help me. again. this time i actually put the picture lol.

Answers

Answer:

y = 1/4x + 3

Step-by-step explanation:

The y intercept is 3 and the slope is 1/4

its three because. thats where the line is touching on the y axis

can i please get brainliest

looks like the question has been answered

A plant grew 7 inches in 5 months. The plant grows the same amount each month. Use this rate to complete this table.​

Answers

Answer:

month    height

1                1.4

2               2.8

3               4.2

4               5.6

5                7

6               8.4

7                9.8

Step-by-step explanation:

Answer: OK above




Purposely

Can someone please help me!?
The length of a rectangle is 6 times its width. If the perimeter of the rectangle is 98 in, find its length and width.

Answers

Answer:

length - 42

width - 7

Step-by-step explanation:

42 and 7 hehehe i hope this helps

There are approximately 250.9 million cars in the United States.
Spain has approximately 25.1 million cars. About how many times
more cars does the U.S. have than Spain? Explain why your answer
is reasonable.​

Answers

Answer:

9.99 (SIMPLIFIED ANSWER)

Step-by-step explanation:

First, we have to divide 250.9 (The dividend) by 25.1 (The divisor), and you get 9.99601593625, but if you need to simplify it, it would be 9.99.

2. a 3/8 pound piece of cheesecake contains 4 servings how much cheese is in 1 serving

Answers

Answer:

3/32

Step-by-step explanation:

I am simply built different


10.6664 because 1/8 of a cheesecake is 1.3333 servings and if you multiply that by 8 it equals 10.6664

The length of a path from a picnic area to the playground is 34 mile. The path has signs with arrows pointing to the playground every 18 mile.

How many signs are placed along the path, assuming that there is a sign at the beginning of the path but not at the end?

Answers

If there is one at the beginning we have one. At the 18 mile we will have a second sign. There should only be two signs because 18 plus 18 is 36, meaning there wouldn’t be room for another. Hope this helped!

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

The number of signs that are placed along the path, assuming that there is a sign at the beginning of the path but not at the end is 2 signs.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Length of the path = 34 mile

There is a sign after every 18 miles.

Now,

There is a sign at the beginning of the path and not at the end.

The number of signs:

= 34 ÷ 18

= 34/18
= 1.8

This means there will be one sign.

Now,

There was a sign at the beginning so we have,

1 + 1 = 2 signs

Thus,

The number of signs that are placed along the path, assuming that there is a sign at the beginning of the path but not at the end is 2 signs.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

For the current year come up with rules to convert a given date into a day of the week for both the ordinal and international fixed calendars. Then if someone told you that thier birthday was on a Thursday could you come up with a rule to figure out his birthday? Why or Why not?

Thier is 3 questions pls answer them all and pls explain because I don't understand at all.

Answers

9514 1404 393

Answer:

((ordinal date) +3) mod 7 = weekday number(IFC date) mod 7 = weekday numberno rule is possible

Step-by-step explanation:

a) Ordinal Calendar

The ordinal calendar numbers days of the year sequentially, so any given date is specified only by its day number: 1 to 366. In 2020, Jan 1 was a Wednesday, so the rule needs to be ...

  day of week = ((ordinal date) +3) mod 7

This will give a result from 0 to 6. Those numbers map to days of the week as follows:

  0: Saturday; 1: Sunday; 2: Monday; 3: Tuesday; 4: Wednesday; 5: Thursday; 6: Friday

__

b) International Fixed Calendar

The international fixed calendar has 13 months of 28 days. The first day of the year is always Sunday, so the day of the week is ...

  day of week = (International Fixed Calendar date) mod 7

In 2020, there are two "leap days" that have day number 29. Days numbered 29 have no associated day of the week.

__

c) There is no rule that maps weekday to day of the year. (Each weekday is repeated many times (52 or 53) through the year, so there can be no functional relationship.)

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