The table shows the temperature of an amount of water set on a stove to boil, recorded every half minute.According to the line of best fit, at what time will the temperature reach 100°C, the boiling point of water?55.566.5

The Table Shows The Temperature Of An Amount Of Water Set On A Stove To Boil, Recorded Every Half Minute.According

Answers

Answer 1

This is a problem with a non-linear equation. The data is the temperature of water and the time. But we have to fit a line anyway.

We can the Least Squares Method, the best line fit is:

[tex]\begin{gathered} y=mx+b \\ m=\frac{n\sum ^{}_{}(x\cdot y)-\sum ^{}_{}x\cdot\sum ^{}_{}y}{n\sum ^{}_{}x^2-(\sum ^{}_{}x)^2} \\ b=\frac{\sum ^{}_{}y-m\sum ^{}_{}x}{n} \\ \text{where n is the number of points} \end{gathered}[/tex]

Now, we apply the formula above:

[tex]m=\frac{10\cdot2072.5-22.5\cdot880}{10\cdot71.25-22.5^2}=\frac{20725-19800}{712.5-506.25}=\frac{925}{206.25}=4.48[/tex]

The Table Shows The Temperature Of An Amount Of Water Set On A Stove To Boil, Recorded Every Half Minute.According

Related Questions

14. In baseball, a player's batting average is calculated by using the formula. A=h/b,
where A is the batting average, h is the number of hits, and b is the number of at
bats.
a. Solve the equation for h. What is the equation to solve h

Answers

Answer: h = b/A

Explanation: If i hit 5 out of 10 balls thrown, my batting average is 2.

.5 = 5/10.

If my batting average is .5, and 10 balls were thrown, I only hit half or 5 of them. 5 = 10/.5

Three consecutive integers have a sum of 81. Find the integers

Answers

Answer:

26, 27, 28

Step-by-step explanation:

Let the 3 integers be: x, x+1, x+2

x+x+1+x+2 = 81

3x+3 = 81

3x = 78

x = 26

x+1 = 27

x+2 = 28

Write the given transformation in vector notation (please help its due in 20 mins)

Answers

Answer:

-1, 1

Step-by-step explanation:

The translation is 1 unit left and 1 unit up.

given a number line C=11 and D=13 CD=?can u help me solve this problem?

Answers

The diagram of the number line is shown below

Thus, the distance CD which is the distance between point D and point C is

13 - 11 = 2

CD = 2

Help me solve this please

Answers

Answer: a. 291/2020 b. 77/465 c. 874/2020 d.145/376 e. 41/157 f. 41/157 g. 53/157 h. 433/465 I. 335/376

Step-by-step explanation:

A. 291- column of loyal customers for 10-14 years over total amount. Question about the overall group 2020.

B. 77- people in the east that have been loyal 10-14 years in the east over the east group that's given that they're apart of 465.

C. 874 - customers loyal for more than 10 years in the west over the total amount. Question about the overall group 2020.

D.145 (45+100) - customers loyal for over 10 years in the west over the west group 376.

E. 41 people that have been loyal less than 1 year in the west over the group that has been loyal for less than 1 year 157.

F. 53 people that have been loyal less than 1 year in the south over the group that has been loyal for less than 1 year 157.

G.433 (465-32) people that have been loyal more than a year in the east over the east group 465.

I.335 (376-41) people that have been loyal in the west over the west group 376.

Mika opened a bank account that earns simple interest with an initial deposit of $2,200.She made no other transactions throughout the year. At the end of the year, Mika had $2,260.50 in her account. What was the simple interest rate?

Answers

Answer:

2.75%

Step-by-step explanation:

2260.5-2200=60.5 the extra

60.5/2200=0.0275*100=2.75%

6. Find the sale prices. a. $4,200 with a 35% markdown b. $5,000 with a 44% markdown​

Answers

Answer: The Correct Sales Prices:

a. $2,730

b.  $2,800

Step-by-step explanation:

a. $4,200 x 35%

$4,200 x .35 = $1,470

$4,200 - $1,470 = $2,730

b. $5,000 x 44%

$5,000 x .44 = $2,200

$5,000 - $2,200 = $2,800

Find the function f whose zeros are 6 and 3

Answers

f(x) = x^2 - 9x + 18

To find the zeroes of a function f, use the fact that they make f(x) = 0. So, in this case, f(x) = (x-a)(x-b), for a and are the zeroes of the function. So:

f(x) = (x - 3)(x - 6) = x^2 - 9x + 18

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32°
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Look carefully at quadrilateral PQRS.
Consider the transformation Rz (PQRS) that produces its image, quadrilateral
TUVW.
Find all the following:
cm
147°
3.8 cm
6.0 cm
30°
R
N

Answers

Answer:

Step-by-step explanation:

Please hurry due today I will give you brainlest
Which numbers are solutions of x² + 20 = 9x + 2? choose​

Answers

Answer:

x = 6 or x = 3

Step-by-step explanation:

Solve for x over the real numbers:

x^2 + 20 = 9 x + 2

Subtract 9 x + 2 from both sides:

x^2 - 9 x + 18 = 0

The left-hand side factors into a product with two terms:

(x - 6) (x - 3) = 0

Split into two equations:

x - 6 = 0 or x - 3 = 0

Add 6 to both sides:

x = 6 or x - 3 = 0

Add 3 to both sides:

Answer: x = 6 or x = 3

HELP ASP YOULL GET 20 POINTS AND BRAINLIEST!!!

Answers

Answer:

7 Games

Step-by-step explanation:

1. take the information and put it into a equation (being y=3.25x+3 or f(x)=3.25+3)

2. replace the x with a whole number because you can't bowl half a game.

Ex: f(3)=12.75 or f(6)=22.50

3. The highest you can go without going over your money is 7 games ($25.75) leaving you with a total of 2.25.

If -3/4 is the dividend and 2/5 is the divisor what is the quotient

Answers

[tex]-\cfrac{3}{4}\div \cfrac{2}{5}\implies -\cfrac{3}{4}\cdot \cfrac{5}{2}\implies -\cfrac{15}{8}\implies {\Large \begin{array}{llll} -1\frac{7}{8} \end{array}}[/tex]

The aquarium has 6 fewer yellow fish than green fish. 40% of the fish are yellow. How many green fish are in the aquarium? Show your work

Answers

Answer: 18 fishes

Step-by-step explanation:

y=0.40(y+g)(2)

g-6=0.40(g-6)+0.40g

=0.40g-2.4+0.40g

=3.6/0.2

g=

A bank account gathers compound interest at a
rate of 5% each year.
Another bank account gathers the same amount of
money in interest by the end of each year, but
gathers compound interest each month.
If Cameron puts £4200 into the account which
gathers interest each month, how much money
would be in his account after 2 years and
7 months?
Give your answer in pounds to the nearest 1p.

Answers

Based on the amount that Cameron invests in the bank account that gathers interest each month, the amount in the account after 2 years and 7 months is £4,777.81

How to find the amount in the account?

The number of periods in months is:

= 2 years and 7 months

= 31 months

The periodic interest in months is:
= 5% / 12 months

= 5/12%

The amount in the bank account after 2 years and 7 months is:

= 4,200 x (1 + 5/12%)³¹

=£4,777.81

In conclusion, the amount after 2 years and 7 months have elapsed is £4,777.81

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write a quadratic function in standard form containing the point (5,-6) and x-intercepts -7 and 3

WILL GIVE BRAINLIEST

Answers

Answer:

[tex]y=-\dfrac{1}{4}x^2-x+\dfrac{21}{4}[/tex]

Step-by-step explanation:

Intercept form of a quadratic equation

[tex]y=a(x-p)(x-q)[/tex]  

where:

p and q are the x-intercepts.a is some constant.

Given:

x-intercepts:  -7 and 3Point on the curve:  (5, -6)

Substitute the given values into the formula and solve for a:

[tex]\begin{aligned} y&=a(x-p)(x-q)\\\\\implies-6&=a(5-(-7))(5-3)\\-6&=a(12)(2)\\-6&=24a\\a&=\dfrac{-6}{24}\\\implies a&=-\dfrac{1}{4}\end{aligned}[/tex]

Substitute the given x-intercepts and the found value of a into the formula:

[tex]\implies y=-\dfrac{1}{4}(x+7)(x-3)[/tex]

Expand to standard form:

[tex]\implies y=-\dfrac{1}{4}(x^2-3x+7x-21)[/tex]

[tex]\implies y=-\dfrac{1}{4}(x^2+4x-21)[/tex]

[tex]\implies y=-\dfrac{1}{4}x^2-x+\dfrac{21}{4}[/tex]

please solve the inequality in the picture shown below i will give brainliest

Answers

the answer to this is p<-1

[tex]\frac{3}{4} -\frac{1}{2} p > \frac{5}{4} \\\frac{3}{4}(4)-\frac{1}{2} p(4) > \frac{5}{4} (4)\\3-2p > 5\\-2p > 5-3\\-2p > 2\\\frac{-2p}{-2} > \frac{2}{-2} \\p < -1[/tex]

when you divide or multiply by a negative number the signs <> change directions.

Demarcus and Lauren each take out a $90,000 loan for a new condo. Each has to repay the loan in 10 years. Demarcus will pay an interest rate of 2.8% per year. His monthly payments will be $771. Because Lauren has a lower credit score, she will have to pay an interest rate of 3.7% per year. Her monthly payments will be $840. How much more will a $90,000 loan cost Lauren than Demarcus?

Answers

The amount that a $90,000 loan cost Lauren than Demarcus will be $8280.

How to calculate the value?

From the information, Demarcus and Lauren each take out a $90,000 loan for a new condo and each has to repay the loan in 10 years. It should be noted that 10 years in months will be:

= 10 × 12 = 120 months

The difference in the amount paid as a result of the credit score will be:

= ($840 × 120) - ($771 × 120)

= $100800 - $92520

= $8280

Therefore, the amount is $8280.

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Mr. Burke wants to invest part of his lottery winnings in a safe fund that earns 2.5% annual interest and the rest in a
risky fund that expects to yield 8% annual interest. The amount of money invested in the safe fund, x, is to be exactly
four times the amount invested in the risky fund, y. Use the system of equations to determine the amount to be
invested in each fund if a total of $1080 is to be earned at the end of one year.

Answers

Answer:

eywgw6 the car is in the car is in the car is in

Step-by-step explanation:

Wu and I will be in the car is in the car is in the car is in the car is here and we can 4

Answer:

Safe fund = $24,000

Risky fund = $6,000

Step-by-step explanation:

Definition of variables:

Let x = the amount of money invested in the safe fund.Let y = the amount of money invested in the risky fund.

Given information:

Safe fund = 2.5% annual interest.Risky fund = 8% annual interest. Total interest earned at the end of one year = $1080.The amount of money invested in the safe fund, x, is to be exactly four times the amount invested in the risky fund, y.

Convert the percentages into decimal form:

[tex]\implies 2.5\%=\dfrac{2.5}{100}=0.025[/tex]

[tex]\implies 8\%=\dfrac{8}{100}=0.08[/tex]

Create a system of equations from the given information and defined variables:

[tex]\begin{cases}0.025x+0.08y=1080\\x=4y\end{cases}[/tex]

Substitute the second equation into the first equation and solve for y:

[tex]\implies 0.025(4y)+0.08y=1080[/tex]

[tex]\implies 0.1y+0.08y=1080[/tex]

[tex]\implies 0.18y=1080[/tex]

[tex]\implies \dfrac{0.18y}{0.18}=\dfrac{1080}{0.18}[/tex]

[tex]\implies y=6000[/tex]

Substitute the found value of y into the second equation and solve for x:

[tex]\implies x=4(6000)[/tex]

[tex]\implies x=24000[/tex]

Therefore, the amount invested in each fund was:

Safe fund = $24,000Risky fund = $6,000

Use the diagram find the image of c under the translation described by the translation rule
(X,y) (x+11,y-8)

○ B
○ A
○ D
○ E

Answers

D trust me I’m John wick

A weather researcher compared average monthly temperature data for Rio deJaneiro, Brazil, and Caracas, Venezuela.Rio de Janelro CaracasMean 76.5°F74.5°FRange 11.1°F17.4°FBased on these data, which statements are true?A. On average, Rio de Janeiro has a higher monthly temperature.However, temperatures in Caracas vary more.B. On average, Rio de Janeiro has a higher monthly temperature. Itsmonthly temperatures also vary more.C. On average, Caracas has a higher monthly temperature. However,temperatures in Rio de Janeiro vary more.D. On average, Caracas has a higher monthly temperature. Itsmonthly temperatures also vary more.

Answers

The mean and the average values are the same. They represent a dataset by calculating the central value.

The range can be understood as the variation of the data. The higher the range, the wider the variation.

From the table, we can see the average temperature of Rio de Janeiro is higher than in Caracas.

We can also see the variation of the temperature is higher in Caracas than in Rio de Janerio.

This corresponds to choice A.

A right rectangular prism is packed with cubes of side length 1/8 inch. if the prism is packed with 16 cubes along the length, 8 cubes along the width, and 6 cubes along the height, what is the volume of the prism?A. 1 1/2 cubic inchesB. 1 3/4 cubic inchesC. 2 1/2 cubic inchesD. 2 3/4 cubic inches

Answers

Answer:

A. 1 1/2 cubic inches

Explanation:

We are told that the side length of the cube is 1/8 of an inch. Furthermore, we are also told that the rectangular prism fits 16 cubes along the length, 8 cubes along the width, and 6 cubes along the height. This means the measures of the dimensions of the prism are

[tex]\begin{gathered} \frac{1}{8}\times16\: in=2\: in \\ \end{gathered}[/tex][tex]\frac{1}{8}\times6\: in=0.75\: in[/tex]

[tex]\frac{1}{8}\times8\: in=1\: in[/tex]

Therefore, the volume of the prism is

[tex]2\: in\times0.75\: in\times1\: in=1\frac{1}{2}\: in^3[/tex]

Hence, the volume of the prism is 1 1/2 cubic inches

The product of 3 and the difference of a number and 1
Where”a number” is the letter x

Answers

3(x-1) I think, might be 3(1-x)

Which conversion factors can be used to multiply to 4 km/min to get meters per hour?Select each correct answer. 1 km1000 m1 h60min60min1 h1000 m1 km

Answers

Step 1: Concept

To convert km to meters you will multiply with 1000.

To convert minute to hour you will divide by 60

Step 2: Convert

[tex]\begin{gathered} 4\operatorname{km}\text{ to meters = 4 }\times\text{ }\frac{1000m}{1\operatorname{km}}\text{ } \\ 1\text{ min to hour = 1}\min \times\frac{1\text{hour}}{60\text{ min}} \end{gathered}[/tex]

Step 3: Final answer

[tex]\frac{1000m}{1\operatorname{km}}\text{ and }\frac{1hour}{60\min }[/tex]

Option B and D

On a given planet the weight of an object varies directly with the mass of the object. Suppose that an object whose mass is 80 KG weighs 80 n calculate the mass of another object that weighs 70 n

Answers

Explanation

We are told that the weight of an object varies directly with the mass of the object. This basically means that if w is the weight and M is the mass then these two magnitudes are related by the following expression:

[tex]w=k\cdot M[/tex]

Where k is a constant.

We know that an object with a mass of 80kg weights 80 newtons. Then for this object we have w=80kg and M=80n so we get:

[tex]80n=k\cdot80kg[/tex]

We divide both sides of this equation by 80:

[tex]\begin{gathered} \frac{80n}{80}=\frac{k\cdot80kg}{80} \\ 1n=k\cdot1kg \end{gathered}[/tex]

Here it's important to remember that 1 newton (i.e. 1n) is equal to:

[tex]n=\frac{kg\cdot m}{s^2}[/tex]

Then we get:

[tex]1\frac{kg\cdot m}{s^2}=k\cdot1kg[/tex]

We divide both sides by 1 kg:

[tex]\begin{gathered} \frac{1\frac{kg\cdot m}{s^2}}{1kg}=\frac{k\cdot1kg}{1kg} \\ 1\frac{kg\cdot m}{kg\cdot s^2}=k\cdot\frac{1kg}{1kg} \\ k=1\frac{m}{s^2} \end{gathered}[/tex]

So now that we found k we have the following expression for the weight of an object as a function of its mass:

[tex]w=M\cdot1\frac{m}{s^2}[/tex]

For an object that weights 70n we get:

[tex]\begin{gathered} 70n=M\cdot1\frac{m}{s^2} \\ 70\frac{kg\cdot m}{s^2}=M\cdot\frac{m}{s^2} \end{gathered}[/tex]

We divide both sides by 1 m/s²:

[tex]\begin{gathered} \frac{70\frac{kg\cdot m}{s^2}}{1\frac{m}{s^2}}=\frac{M\cdot\frac{m}{s^2}}{1\frac{m}{s^2}} \\ 70\frac{kg\cdot m\cdot s^2}{m\cdot s^2}=M\cdot\frac{m\cdot s^2}{s^2\cdot m} \\ 70kg=M \end{gathered}[/tex]Answer

So the mass of an object that weights 70n is 70kg.

Starting at the origin (0,0), what is the ordered pair of a value that is 4 units to the left and 5 units up?

Answers

(-4,5)

4 to the left on the axis is neg. 5 units up on the y axis makes it positive.

Hello, I’m struggling with my geometry homework

Answers

Answer

Explanation

Given:

m

To determine the mAs we can see, CD form a straight line, so the angle of it must be 180°. Now, we can get the m[tex]\begin{gathered} m\angle APE+m\angle APD=180 \\ 67+m\angle APD=180 \\ Simplify\text{ and rearrange} \\ m\angle APD=180-67 \\ m\angle APD=113\degree \end{gathered}[/tex]Since the line ED is at the center of the circle:

[tex]m\angle APD=m\hat{AD}[/tex]

Therefore,

[tex]m\hat{AD}=113\degree[/tex]

You get paid an annual salary of $67,100/year. You get paid bi-
weekly. Calculate the gross pay.

Answers

ANSWER: $2,580

EXPLANATION: bi-weekly means every other week. there are 52 weeks in a year, so you would get paid 26 weeks out of the year. divide $67,100 by 26 to get $2,580.77.

In 2012, the U.S. population was about
314 million. How many people over the
age of 64 were in the U.S.?

Answers

There are 38,936,000 people over the age of 64 were in the U.S.

Option 2 is true.

What is Percentage?

A relative value indicating hundredth part of any quantity is called percentage.

Given that;

In 2012, the U.S. population was about 314 million.

Now,

Total population = 314,000,000

In the pie chart, The percent of people over the age of 64 were in the U.S will be 12.4%

Hence, Solve as;

Number of people over the age of 64 = 314,000,000 × 12.4%

                                                           = 314,000,000 × 12.4 / 100

                                                           = 31,400,00 × 12.4

                                                           = 38,936,000

Thus,

There are 38,936,000 people over the age of 64 were in the U.S.

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3.4-2.8d+2.8d-1.3Combine like terms to create an equivalent expression.

Answers

The given expression is

3.4 - 2.8d + 2.8d - 1.3

By collecting like terms, we have

- 2.8d + 2.8d + 3.4 - 1.3

= 0 + 2.1

= 2.1

Is it right?????????

Answers

Check the picture below.

let's bear in mind that the standard deviation measures deviation in a dataset, so is a measure of how much the data fluctuates, so a dataset of 3 , 1000, will have a much higher deviation value than a same total of 450 , 553.

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