Mathematics College

1
The temperature falls from 0 degrees to -12 degrees in 32 hours. Which expression finds the change in
temperature per hour?
7 49
O24
7 49
0-25
49 7
oĀ x
49 7
O"42

1The Temperature Falls From 0 Degrees To -12 Degrees In 32 Hours. Which Expression Finds The Change Intemperature

Answers

Answer 1

Answer:

D. [tex]Rate = -\frac{49}{4}^{\circ} /\frac{7}{2}\ hr[/tex]

Step-by-step explanation:

Given

[tex]T_1 =0^{\circ}[/tex]

[tex]T_2 =-12\frac{1}{4}^{\circ}[/tex]

[tex]Time = 3\frac{1}{2}\ hr[/tex]

Required

Determine the change in temperature per hour

This is calculated as:

[tex]Rate = \frac{T_2 - T_1}{Time}[/tex]

[tex]Rate = \frac{-12\frac{1}{4}^{\circ} - 0^{\circ}}{3\frac{1}{2}\ hr}[/tex]

[tex]Rate = \frac{-12\frac{1}{4}^{\circ} }{3\frac{1}{2}\ hr}[/tex]

Convert to improper fractions

[tex]Rate = \frac{-\frac{49}{4}^{\circ} }{\frac{7}{2}\ hr}[/tex]

Express as:

[tex]Rate = -\frac{49}{4}^{\circ} /\frac{7}{2}\ hr[/tex]

Related Questions

Best answer gets brainliest!


The following three shapes are based only on squares, semicircles, and quarter circles. Find the perimeter and the area of each shaded part. Give your answer as a completely simplified exact value in terms of π (no approximations).

Answers

Answer:

A = 81 - 20.25π

P = 36 - 9π

Step-by-step explanation:

To find the perimeter and area of the highlighted shapes, we must find those of the square and full circle. Then subtract the circle's area from the square. Do the same for perimeter.

Answer: look at picture!!!!

Ur welcomeeeeeee

I GIVEEE BRAINLIST //

Answers

Answer:

-20% aka 20% decrease

Step-by-step explanation:

Answer:

450 %20

Step-by-step explanation:

· Lucy buys 3 apples and 6 mangos for a total of $9.15.


· Amir buys 8 apples and 4 mangos for 11.92.


What is the cost of a single apple?

Answers

Answer:

0.97

Step-by-step explanation:

Let x be the cost of apples

Let y be the cost of mangoes

3x + 6y= 9.15......equation 1

8x + 4y= 11.92........equation 2

Multiply equation 1 by 8 and equation 2 by 3

24x + 48y = 73.2

-

24x + 12y = 35.76

36y = 37.44

y = 37.44/36

y= 1.04

Substitute 1.04 for y in equation 1

3x + 6y = 9.15

3x +6(1.04)= 9.15

3x + 6.24= 9.15

3x = 9.15-6.24

3x = 2.91

x = 2.91/3

x = 0.97

Hence the price of a single apple is 0.97

Where is the blue dot on the number line? -7 ? -7.5. -8​

Answers

Answer:

-7.5

Step-by-step explanation:

Answer:-7.4

Step-by-step explanation:

Hopen helps ❤

what is the value of x in the equation -2/3 x + 9 = 4/3 x - 3​

Answers

Answer:

x=6

Step-by-step explanation:

This equation requires simplifying. We start with moving like terms to each other:

3 + 9 = 4/3x + 2/3x

After this, add the like terms together:

12 = 6/3x

6/3 will simplify into 2:

12=2x

Finally, divide both sides by 2:

6=x

A student was interested in studying the relationship between burping and eating at BCs. The hypothesis was that more expensive meals would correlate with more burping. They watched BCs patrons for two weeks and recorded the cost of meals and how often people burped while eating. In this experiment, the independent variable was _________, and they should present the data as a__________ .
a. Burping frequency,
b. Bar graph with error bars
c. Burping frequency
d. Scatter plot with a trendline

Answers

Answer:

Price of the meals

Scatter plot with a trendline

Step-by-step explanation:

None of the provided options are correct. The independent variable was Price of the meals, and they should present the data as a Scatter plot with a trendline. The Price of the meal is the independent variable because it does not depend on any other variable and is instead the cause of the burping frequency which would be the dependent variable in this scenario. The Scatter plot would allow you to mark each individual's burping frequency on the same prices for the meal, since you would most likely have more than one value of burping frequency for the same priced meal.

Use the slope formula (m =
Y2 - Y1
) to find the slope of a line given two points.
X2 – X1
-1
(-7, -3) and (-6, -4)
x
1
(1, 6) and (-3,0)
1.5
(7, 2) and (0, -5)

Answers

For (7,2) and (0,5)

slope = 5-3/-7 = -2/7

Frank has a box of pens. The box contains 6 blue pens, 8 black pens and 3 red pens. Some more blue pens are added to the box. The probability of selecting a blue pen is now 1/2. How many blue pens were added to the box?

Answers

I think 10 hope this helps

Answer: umm i calculated about 10??

Step-by-step explanation:

We can measure. waves with instruments

Answers

Answer:

Yes, we can measure waves with instruments. We can also use math.

y +6 > -13
What does this equal help

Answers

Answer:

y > -19

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

y + 6 > -13

Step 2: Solve for y

[Subtraction Property of Equality] Subtract 6 on both sides:                      y > -19

Here we see that any value y greater than -19 would work as a solution to the inequality.

Sassy Fashions buys dresses at wholesale and then marks them up for retail sale. They recently sold a dress at a 40% discount off their marked-up price. What percent mark-up did they originally apply to the dress if they broke even on the sale? Express your answer to the nearest whole percent.

Answers

Answer:

67%

Step-by-step explanation:

I did math counts

(GIVING BRAINLIEST!!)

Choose the equation that represents the fraction one eighth

A) 7 ÷ 8 = ________
B) 1 ÷ 8 = ________
C) 8 ÷ 7 = ________
D) 8 ÷ 1 = ________

Answers

Answer:

Step-by-step explanation:

The answer is d

Answer:

B.

Step-by-step explanation:

I did the test and got it right.


A snail going full speed was taking of a minute to move
centimeter. At this rate, how long would it take the snail to travel a
centimeter?

Answers

Answer:

Step-by-step explanation:

if the snail moves 1 cm / 1 min

the snail will need 1 minute, maybe you didn't posted correct?

which statement is true about points located in quadrant ||| in the coordinate plane?

Answers

Answer:

The x-coordinate is negative, and the y-coordinate is negative.

A sheet of drywall is cut into quarters. Each quarter is cut into thirds. What fraction of a whole sheet is each of these small pieces?

Answers

Answer:

X/12

Step-by-step explanation:

X - whole drywall

X/4 -quarters

X/4/3=X/12 fraction of a whole sheet is each of these small pieces

What she said drywall stop bothering

help me in 5 mins it is due
A pipe can pump 1000 gallons of water in 4 hours.

How long would it take the pipe to fill a 2500 gallon pool?

4 h
8 h
10 h
25 h

Answers

Answer: 10 hours exactly.

Step-by-step explanation:

Answer:

10h

Step-by-step explanation:Every 4 hrs 1000 is dumped

2500/1000=2.5

2.5 times 4=10

Richie and bethany play basketball and practice shooting free throws after school. During one practice session, Richie attempted 15 free throws and made 12 of them.

a. bethany made eight free throws for every 3 that she missed. Did bethany do better than richie? how do you know.

Answers

Answer:

Bethany did not do better than Richie because her average score was less than his.

Step-by-step explanation:

Average Value

The average or mean value of m successes out of n tries is given by:

[tex]\displaystyle \bar x=\frac{m}{n}[/tex]

During a practice session playing basketball, Richie made m=12 free throws from n=15 attempts. His average score was:

[tex]\displaystyle \bar x=\frac{12}{15}=0.8[/tex]

Bethany made 8 free throws for every 3 that she missed, this means she made 8 out of 11 attempts. Her average score was:

[tex]\displaystyle \bar x=\frac{8}{11}=0.72[/tex]

Bethany did not do better than Richie because her average score was less than his.

The person that did better is Richie. This is because the percentage of free throws made by Richie is higher than that of Bethany.

In order to determine who did better, the percentage of free throws made has to be determined.

The percentage of free throws made by Richie =( 12 / 15) x 100 = 80%

The  percentage of free throws made by Bethany = [(8-3) / 8] x 100 = 62.50%

To learn more, please check: https://brainly.com/question/92258

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Answers

Answer:I do not speak

Step-by-step explanation: if u answer them all you get I do not speak I hope this helped :)

Pls help this last question

Answers

Answer:

4 more pens

Step-by-step explanation:

Well, what do we know?

We know Sheila has:

6 pens

10 pencils

How many MORE pens does she need to make the number of pens equal to the number of pencils?

6 + x (x is the number of pens needed to EQUAL to 10)

6 + x = 10

x = 4

Sanity check:

6 + 4 = 10

Sheila needs 4 more pens to make the number of pens and pencils equivalent, or EQUAL TO each other.

180 is the answer for your question

Jared ran four days this
week. He ran a total of 24.2
miles. If he ran about the
same distance every time,
how many miles did he run
each day?

Answers

Answer:

6.05

Step-by-step explanation:

24.2 / 4 = 6.05 ^^

hope this helps!

10 = 3/5 (x+5) simplified ?? ​

Answers

Answer:

35/3 is your answer

Step-by-step explanation:

also if you want it in decimal form its 11.6

5x+y=9
10x-7y=-8
I need help!

Answers

Answer:

(11/9, 26/9)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of Equality

Algebra I

Terms/CoefficientsSolving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

5x + y = 9

10x - 7y = -8

Step 2: Rewrite Systems

Manipulating: Equation 5x + y = 9

Subtract 5x on both sides:                    y = 9 - 5x

Step 3: Redefine Systems

y = 9 - 5x

10x - 7y = -8

Step 4: Solve for x

Substitution

Substitute in x:                    10x - 7(9 - 5x) = -8Distribute -7:                        10x - 63 + 35x = -8Combine like terms:           45x - 63 = -8Add 63 on both sides:        45x = 55Divide 45 on both sides:    x = 11/9

Step 5: Solve for y

Define equation:                    5x + y = 9Substitute in x:                       5(11/9) + y = 9Multiply:                                  55/9 + y = 9Isolate y:                                 y = 26/9

if if 30 per increase in the salary of usman results in rs.4500 what was the actual salary of usman​

Answers

Answer:

The actual salary of usman was Rs. 3461.53

Step-by-step explanation:

Given that:

Percent increase in salary = 30%

Total salary percent would be = (100+30)% = 130%

Salary after increment = Rs. 4500

Let,

x be the actual salary before increase.

According to given statement,

130% of x = 4500

[tex]\frac{130}{100}x=4500\\1.3x=4500[/tex]

Dividing both sides by 1.3

[tex]\frac{1.3x}{1.3}=\frac{4500}{1.3}\\x=Rs 3461.53[/tex]

Hence,

The actual salary of usman was Rs. 3461.53

Elan is painting the outside of a rectangular barn door. It is
80 inches high and 60 inches wide. What is the area of the
outside of the door?
Help ASASP

Answers

Answer:

9600

Step-by-step explanation:

80 times 60 times 2

A melon is cut into 8 equal slices. Together, Regan and Juanita will eat of the melon.
What is one way the girls could eat that fraction of the melon?

Answers

Answer:

Many differeent suloutions, see below

Step-by-step explanation:

1/8, 1/16, 1/32, 1/64, 1/128, etc.

Please answer quickly

Answers

Answer is C hope this helps bye bye

HELP ASAP!!!!
In chemistry class, Bob recorded the volume of a liquid as 12.7 ml. The actual volume was 12.3 mL. Use
the formula to find percent error of Bob's measurement to the nearest tenth of a percent.
Experimental Value - Actual Valuel
Percent Error =
Actual Value
x 100
The percent error of Bob's measurement is
%.

Answers

Answer:

% error = 3.3%

Step-by-step explanation:

Percent Error Formula:

% error = ( (MeasuredValue - AcceptedValue) / AcceptedValue ) * 100

% error = ( (12.7 - 12.3) / 12.3 ) * 100

% error =  (0.4/12.3) * 100

% error = (0.03252033) * 100

% error = 3.25203252

% error = 3.3%

i need help with this

Answers

Answer:

I would say that the answer is D

Step-by-step explanation:

Hope this helps you:)

Photo attached please help with answer

Answers

Answer:

a don't know if right but sorry if wrong

The well-known state of East Dakota spent approximately $80.8 billion in 2016. Its population at that time was about 3.203 million people. How much did East Dakota spend per capita in 2016? Round to the nearest dollar.

Answers

Answer:

$25,226

Step-by-step explanation:

We know that one billion is equal to 1,000 millions

So, we first multiply 80.8 by 1,000 so we can use millions as our unit.

Which gives you $80,800

So, East Dakota spent $80,800 million in 2016 for the 3.203 million people. Right now, we just ignore the "million" part and divide 80,800 by 3.203 which is around 25,226.35029659694

Now we just round it to the nearest dollar and since the tens place is only at 3, we round down.

Hence, our answer is $25,226

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Just think about how happy Father will be to see us!""I don't remember what Father looks like," Beth whispered. "He's been gone a long time.""Come on," Sally said. "Let's find our seats.""All aboard!" shouted the conductor. "Non-stop from Omaha to Sacramento."Sally and Beth settled into the cushioned seats, their suitcases stashed under their chairs. Sally stared out the dusty window at the flat, sun-baked landscape. She wondered how different life would be in California. Their father had left them with their grandparents in Omaha while he traveled to California to seek his fortune in the gold rush. She took his last letter from her pocket and read it for the hundredth time.Chapter 2: Welcome to CaliforniaAfter a three-day train ride, Sally was relieved to hear the conductor call out, "Ladies and gentlemen, please gather your belongings. We will be arriving in Sacramento within the hour.""I can't wait to get off this train!" Beth whined. 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