The time,
T
(seconds), it takes for a pot of water to boil is proportional to the amount,
A
(litres), of water.
It takes 210 seconds to boil 2.5 litres of water.
Work out how long it takes (to the nearest second) to boil 2.8 litres

Answers

Answer 1

Answer:

2.5 liters = 2500 grams

210 ÷ 2500 = 0.084

2.8 liters = 2800 grams

2800-2500 = 300

300×0.084 = 25.2

25.2 + 210 = 235.2 to boil 2.8 liters


Related Questions

Someone please help quickly

Answers

We know we get area by multiplying width times length, so we know that

44 = 3 2/3 * x

To get x, or the other side, we will divide 44 by 3 2/3

From this, we will get x = 12

Please help me on math again

Answers

Answer:

0,100,0.5,20

Step-by-step explanation:

My answer got removed cause I didn't put an explanation... you just plug in the numbers to the equation.

i need help please can i have some help

Answers

Answer:

a) Rectangle:

Length = 12 cm

Breadth = 6 cm

Area = length × breadth

= 12 × 6

= 72 cm²

b) Triangle A:

Base = 3 cm

Height = 6 cm

Area = 1/2 × base × height

= 1/2 × 3 × 6

= 9 cm²

c) Triangle B:

Base = 3 cm

Height = 6 cm

Area = 1/2 × base × height

= 1/2 × 3 × 6

= 9 cm²

d) Parallelogram:

Base = (12 - 3) = 9 cm

Height (distance between two parallel sides – the ones you use as your base) = 6 cm

Area = base × height

= 9 × 6

= 54 cm²

**ANSWER NEEDED QUICKLY** Here is a number pyramid puzzle.
Fill in each blank with a number so that every number
is the product of the two numbers directly below it.

Answers

Answer:

ready. took me 2 minutes

g(x)=4x-2 ,h(x)= 5x, evaluate (h×g)(3)​

Answers

Answer: 50

Step-by-step explanation:

[tex]h\:\circ \:g=h\left(g\left(x\right)\right)[/tex]

[tex]g\left(x\right)=4x-2[/tex]

[tex]=h\left(4x-2\right)[/tex]

[tex]=5\left(4x-2\right)[/tex]

[tex]=20x-10[/tex]

Substitute 3 for x:

= 20(3)-10

= 50

Find the linear equation from this table

Answers

Answer:

y=2x+5

Step-by-step explanation:

The slope-intercept form of a linear equation is:

y=mx+b

Where m is the slope and b is the y-intercept.

We can start by finding the slope...

[tex]Slope=\frac{y_2-y_1}{x_2-x_1}[/tex]

We can use any two x, y pairs to solve for the slope. In this case let's use (0,5) and (2,9)...

[tex]Slope=\frac{9-5}{2-0}=\frac{4}{2}=2[/tex]

The y-intercept is where the line intersects the y-axis. This means that the x value is 0. In the table we can see when the x value is 0, the y value is 5 meaning the y-intercept is 5...

y=2x+5

Random error is: A. an outside influence that affects the true score in a consistent way. B. the extent to which a measure will produce the same results each time it is used. C. the extent to which a research method measures what it is intended to measure. D. unsystematic influence on the true score.

Answers

D is the answer, i just done this one

Which of the following statements are true about the function y = 3x?
i. The function is a direct variation.
ii. The function goes through the origin.
iii. The constant of variation is
1/3
iv. y is 6, when x is 2.

Answers

The following statement are true about the given function

Statements i,ii, and iv

Given Data

We have the following function to analyse

y = 3x

The following statement are true/false about the given function

The function is a direct variation: this is true because an increase in the x value will increase the y valueThe function goes through the origin:  for x = 0, y = 0The constant of variation is 1/3: this statement is false, the constant of the variation is 3y is 6, when x is 2: this statement is true, when we plug x = 3, the corresponding value for y is 6

Learn more about variation here:

https://brainly.com/question/6499629

Answer:

I,II, and IV

Step-by-step explanation:

From Lesson 6.04 Piecewise Functions

The graph below models how one county fines drivers that get a ticket for speeding based on how many miles over the speed limit. Based on the graph, what would the fine be for a person that was ticketed for driving 62 mph in a zone that had a maximum speed of 55 mph?

$150

$100

$50

$200​

Answers

Answer:

$100

Step-by-step explanation:

The bottom row is how many mph the driver is over, the left row is how much it costs per mph over. Since 62mph in a 55mph zone is 7mph over, you go the 7 on the bottom, and go up until you get to the point, then see what the number on the left is. In this case, it would be 100. So therefore the fine is $100.

A polynomial is factored using algebra tiles. An algebra tile configuration. 0 tiles are in the Factor 1 spot and 0 tiles are in the Factor 2 spot. 8 tiles are in the Product spot in 2 columns with 4 rows: 1 is labeled x squared, 1 is labeled x, the 3 tiles below x squared are labeled negative x, and the 3 tiles below the x tile are labeled negative. What are the factors of the polynomial? (x − 1) and (x 3) (x 1) and (x − 3) (x − 2) and (x 3) (x 2) and (x − 3).

Answers

Answer:

b

Step-by-step explanation:

Answer: B

Step-by-step explanation:

Find the value of x.

Answers

180 = 132 + x + x

180 - 132 = 2x

48 = 2x

x = 24⁰

[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]

Let's use Angle sum property of a triangle ~

[tex]\qquad \sf  \dashrightarrow \: x + x + 132 \degree = 180 \degree[/tex]

[tex]\qquad \sf  \dashrightarrow \: 2x + 132 \degree = 180 \degree[/tex]

[tex]\qquad \sf  \dashrightarrow \: 2x = 180 \degree - 132 \degree[/tex]

[tex]\qquad \sf  \dashrightarrow \: 2x = 48 \degree[/tex]

[tex]\qquad \sf  \dashrightarrow \: x = 48 \degree \div 2[/tex]

[tex]\qquad \sf  \dashrightarrow \: x = 24 \degree[/tex]

Need answers for 3 and 4 please.

Answers

Answer:

Note: Any number or variable(unknown) raised to the index or power zero (0)* is equal to one (1)*.

3. Solution

Given: x = 2 and y = 5

-4x^-2 + 3y^0

by substituting the values of x and y,

> -4(2)^-2 + 3(5)^0

> -4/(2)^2 + 3(5)^0

> -4/4 + 3(1)*

> -1 + 3 = 2

4. Solution

Given: x = 2 and y = 5

2x^0y^-2

by substituting the values of x and y

> 2(2)^0(5)^-2

>2(2)^0×1/(5)^2

>2(1)×1/25

>2×1/25

>2/25

Using the graph of f(x) and g(x), where g(x) = f(k⋅x), determine the value of k.

Answers

Answer:

1/3

Step-by-step explanation:

This is about the interpretation of the graph

From the graph, we can see the 2 lines representing function f(x) and function g(x).

Now for us to find the value of x in g(x) = k⋅f(x), we need to get a mutual x-coordinate where we can easily read their respective y-coordinate values.

We see that the best point for that is where x = -3.

For f(x), when x = -3, y = 1

For g(x), when x = -3, y = -3

we can rewrite them as;

x = -3, f(-3) = 1 and x = -3, g(-3) = -3

Let us plug in the relevant values into g(x) = k⋅f(x) to get;

-3 = k(1)

Thus; k = -1/3

Hope it helps you mark me as brinllent

HELP I DON'T GET THIS PLEASE HELP!!!!!!!
Kamara has a square fence kennel area for her dogs in the backyard. The area of the kennel is 64 ft squared. What are the dimensions of the kennel? How many feet of fencing did she use? Explain.

Answers

Answer:
8 ft

Step-by-step explanation:
If the kennel is a square, both the dimensions must be the same length. Lets say each side is s. Then, the area would be s². So to find s, it must be √(area if the square). In this case, √(64), which is 8 ft.

Answer:

dimensions: 8 ft x 8 ft      ║       32 ft of  fence she used.

Step-by-step explanation:

area of the kennel is 64 ft²

as its a square, its formula for area: length²

using the formula:

length² = 64

length = √64

length = 8 ft

→ The dimensions of the kennel is 8 ft x 8 ft

Using the length, we can find; how many fencing she used:

formula used: 2 ( length + length )

using the formula:

2 ( 8 + 8 )

2 ( 16 )

32 ft

Which describes the intersection of plane A and line m?

line k
line n
point X
point W

Answers

Point x is the answer

Can someone check this!?

Answers

yess ur answer is correct!


The area of a rectangle is calculated using the equation Area = length x width

What is the area of rectangle ABCD?

A. 6 Square Units
B. 441 Square Units
C. 21 Square Units
D. 49 Square Units

Answers

AD is equal 3 considered as width and and AB is 7 considered as length so the answer will be 21

41 POINTS PLS HELP AND PLS GET IT RIGHT THX
The graph of a proportional relationship contains the point (20, 4) .

What is the corresponding equation?

Enter your answer as a fraction in the simplest form by filling in the boxes.

Answers

Answer:

Below :D

Step-by-step explanation:

Corresponding equation:

A relationship represents a proportional diagram.

So we can express it as, y/x=k

Answer= y 1/5x

substitute (20,4)

4= 20x/.

Divide both sides by 20.

so we have.

y=1/5x.

Answer:

[tex] \frac{y - y1}{x - x1} \\ \frac{y - 4}{x - 20} \\ m = \frac{y - 4}{x - 20} \\ 1 = \frac{y - 4}{x - 20} \\ x - 20 = y - 4 \\ - y = - x - 4 + 20 \\ - y = - x + 16 \\ \frac{ - y}{ - } = \frac{ - x}{ -} + \frac{16}{ - } \\ y = x - 16[/tex]

Which relation is a function? Help please

Answers

Answer:

The bottom right (v shaped one) is a function

Step-by-step explanation:

Hope this helps:)

Answer:

The one in the bottom right that is an absolute value function.

Step-by-step explanation:

You can use the "vertical line test" to determine whether a given graph is a function or not. If you can draw a straight, vertical, line anywhere and it intersects the graph more than once, then it is not a function. The one in the bottom right is therefore the answer.

Pedro bought 8 tickets to a basketball game. He paid a total of $224. Enter an equation, using x as your variable, to determine whether each ticket cost $28 or $21. Then enter the cost of the ticket.

The equation is __=__
The cost of each ticket was $__​

Answers

x=224/8

x=25+3=28

So: 28

28x=224
The cost of each ticket was $28

How many solutions does the following system of linear equations have?
6(x + 4) = 2(3x + 4)

Answers

6x + 24 = 6x + 8

Cancel equal terms

24=8

the statement is false(Ø)

The diagram shows a rectangle. Its width is 3a, and its height is 5b. Write down an expression for the area of the rectangle. Simplify your answer.

Answers

Area of a rectangle = height × width

= 5b × 3a

= 15ab

Mary’s dog weighs 185 pounds. Her dog needs to lose between 9 and 15 pounds. Between what two percentages, rounded to the nearest whole numbers, should Mary’s dog lose weight with respect to its current weight of 185 pounds? Select your answers from the drop-down lists.

Answers

Answer:

talk to you're mother

Step-by-step explanation:

love you

Line JK passes through points J(–4, –5) and K(–6, 3). If the equation of the line is written in slope-intercept form, y = mx + b, what is the value of b?

Answers

[tex]J(\stackrel{x_1}{-4}~,~\stackrel{y_1}{-5})\qquad K(\stackrel{x_2}{-6}~,~\stackrel{y_2}{3}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{3}-\stackrel{y1}{(-5)}}}{\underset{run} {\underset{x_2}{-6}-\underset{x_1}{(-4)}}}\implies \cfrac{3+5}{-6+4}\implies \cfrac{8}{-2}\implies -4[/tex]

[tex]\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-5)}=\stackrel{m}{-4}(x-\stackrel{x_1}{(-4)})\implies y+5=-4(x+4)[/tex]

[tex]y+5=-4x-16\implies y=-4x\underset{\stackrel{\uparrow }{b}}{-21} \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}[/tex]

Answer:

its -21 cus im asian and smart

Step-by-step explanation:

A freight train travels 1445 miles in 25 hours. What is the train’s average rate of speed?

Answers

Answer:

the train's average rate of speed would be 57.8 mph

Step-by-step explanation:

Divide 1445 with 25 and then you get your answer

brainilest pls

anyway hope this helped have an awesome day bye byeee

I need to solve xy I am so confused please

Answers

Answer:

Step-by-step explanation:

In the question it’s given that : y=|x| => even if x will be a negative number,y will be positive.

1) -3 ; 3 ; (-3,3)

2) -2 ; 2 ; (-2,2)

3) -1 ; 1 ; (-1,1)

4) 0 ; 0 ; (0,0)

5) 1 ; 1 ; (1,1)

6) 2 ; 2 ; (2,2)

7) 3 ; 3 ; (3,3)

A freight train completes its journey of 150 miles 1 hour earlier if its original speed is increased by 5 miles/hour. What is the train’s original speed?

Answers

Answer:

155 m/h

Step-by-step explanation:

We just add 150 to 5 which equals 155 m/h

I HOPE THAT THIS IS CORRECT

im stup*d please help

Answers

Answer:

1. Standard form

2. Vertex form

3. Intercept form

Step-by-step explanation:

#CARRYONLEARNING

Answer:

a. 2. Intercept Form

b. 3. Vertex Form

c. 1. Standard Form

Step-by-step explanation:

hope this helps :)

A bucket of water of mass 15 kg is pulled at constant velocity up to a platform 40 meters above the ground. This takes 16 minutes, during which time 5 kg of water drips out at a steady rate through a hole in the bottom. Find the work needed to raise the bucket to the platform. (Use g=9.8m/s^2.)

Answers

Answer:

  4900 J

Step-by-step explanation:

The average mass of water raised is ...

  (15 kg +(15 -5) kg)/2 = 12.5 kg

The work done to raise it 40 m is ...

  W = mgh = (12.5 kg)(9.8 m/s^2)(40 m) = 4900 J

Hi some one please help me

Answers

Answer:

There is no question.

Step-by-step explanation:

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