MODELING REAL LIFE The table shows the amount y (in fluid Ounces) of carpet cleaner in a tank after x minutes of cleaning.
X
у
5 108
10 88
15 68
a. Write an equation that represents the amount of cleaner in the tank after x minutes.
y = - Ix + 128
b. How much cleaner is in the tank when the cleaning begins?
There are
fluid Ounces of cleaner in the tank.
C. After how many minutes is the tank empty?

Answers

Answer 1
Modelling in real life 10 =c +r
Answer 2

The tank will be empty in 32 minutes.

What is the point-slope form of a line?

If m is the slope of the line that passes through the point (x₁, y₁), then the equation of the line is y - y₁ = m (x - x₁).

(a)

The table of values is given.

Rewrite the table of values as ordered pairs:

(5,108), (10,88), (15,68)

Since the difference between any two consecutive y values and the difference between any two consecutive x values is constant, the data shows a linear relation.

The slope of the line that passes through (5,108) and (10,88) is:

m = (88-108)/(10-5)

m = -4

The equation of the line with slope m = -4 and passes through (5,108) is:

y - 108 = -4(x - 5)

y = -4x + 20 + 108

y = -4x + 128        (1)

(b)

Substitute x = 0into equation (1):

y = - 4(0) + 128

y = 128

The tank is 128 ounces cleaner at the beginning.

(c)

Substitute y = 0 into equation (1):

0 = -4x + 128

4x  = 128

x = 32

Therefore, the tank will be empty in 32 minutes.

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Related Questions

1. Identify the slope of the line and explain how you found it.

Answers

Answer:

the slope is -2/3

Step-by-step explanation:

rise over run


How far along a motorway would you travel if you drove at 70 mph for 4 hours

Answers

Answer:

280 miles

Step-by-step explanation:

in one hour, you would travel 70 miles because you are going at the speed of 70mph

so to find out how far you go in 4 hours you would multiply 70(mph)×4(hrs) which would be?

280 miles

Step-by-step explanation:

Distance=speed x time

Speed=70mph

Time=4 hours

Distance=70 x 4

Distance=280m

ABCD is a quadrilateral.
B.
С
A
D
AB = CD
Angle ABC = angle BCD.
Prove that AC = BD

Answers

Answer:

AC and BD are vertically oposite

and both sides are equal (equilateral) so AC = BD

As i think

Whats the answer for 2x + 1 + 7x ?

Answers

Answer:

9x+1

Step-by-step explanation:

combine 2x+7x then add the 1

Answer:

Seria 2x + 1 + 7x entonces 2x + 7x = 9x + 1 = 10x

I’ve been confused on this problem for awhile :(

Answers

Answer:

D 7, -12 is the answer hope this helps✌

Answer:

7, -12

Step-by-step explanation:

x^2+5x-84=0

(x-7)(x+12)=0

u have to always place the opposite for the answers

x= 7

x= -12

If you add the digits in a two-digit number and multiply the sum by 7, you get the original number. If you reverse the digits in the two-digit
number, the new number is 18 more than the sum of its two digits. What is the original number?
A. 42
B. 24
C. 64
D. 46
Е. 36

Answers

The answer is A. 42

Solution:

Let x= ones digit, y=tens digit

1st condition (original number) : 7(x+y)=10y + x

2nd condition (new number by reversing the digits): 18+x+y=10x+y

simplifying:

1st condition: 6x=3y

2nd condition: x=2

substituting x=2 to 6x=3y

y=4

Answer:

42

Step-by-step explanation:

The perimeter of a regular hexagon is 6x + 30. What is the length
of each side of the hexagon?

Answers

Answer:

x + 5

Step-by-step explanation:

This is actually rather simple to figure out. Simply divide 6x + 30 by 6. That should get x + 5 for the length of one side.

the figure shown consists of a triangle resting on a square of side 5 cm. the triangle has a height of 4 cm. what is the total area of the figure ?

Answers

Because its a square all its sides are 5cm
So area of square is 5x5=25cm^2
Triangle is 5x4= 20
20/2 is 10cm^2
25+10=35cm^2

Diego is building a patio deck. The length of the deck is (x + 8) feet. The width of the deck is (x + 3) feet. What is the simplest form expression for the perimeter of the deck?

Answers

Answer:

(4x + 22) feet

Step-by-step explanation:

Diego is building a patio deck. The length of the deck is (x + 8) feet. The width of the deck is (x + 3) feet. What is the simplest form expression for the perimeter of the deck?

A patio deck = Rectangular in shape

Hence:

The formula for the Perimeter of a rectangle = 2L + 2W

Where

L = Length

W = Width

The length of the deck is (x + 8) feet. The width of the deck is (x + 3) feet.

The perimeter of the deck =

2(x + 8)feet + 2(x + 3)feet

= (2x + 16) feet +( 2x + 6)feet

= (2x + 2x + 16 + 6) feet

= (4x + 22) feet

Therefore, the perimeter of the deck = (4x + 22) feet

9x³y – 6x²y² + 3xy⁵ factorize

Answers

Answer:

3xy (3x-2xy+y^4)

Step-by-step explanation:

Factor out 3xy from the expression

3xy(3x^2 - 2xy + 6^4)

measure 1 and measure 2 are supplementary. if measure 1 equals (3x - 17) degrees in measure angle two equals (5x + 21) degrees find the value of x​

Answers

Answer:

x = 23 degrees

Step-by-step explanation:

Supplementary angles add up to 180 degrees.  Thus, 3x - 17 degrees plus al 5x + 21 deg must equal 180 degrees.  

Combining like terms, we get 8x - 4 = 180, or 8x = 184.

Dividing both sides by 8 yields   x = 184/8 = 23 = x (measured in degrees)

Frankie performed the following steps to solve the equation 2m^2-24m=-54 .

Answers

Answer:

2(m−9)(m−3)=0

Step-by-step explanation:

uhm idek if thats what youre asking

Convert 8 kilograms into ounces. Round your answer to the nearest whole number.

Answers

282 ounces

But the real answer without rounding it is 282.192 ounces

How would you write y = 2x - 3 in function notation? *

Answers

Answer:

f(x)=2x-3

Step-by-step explanation:

To write an equation in function notation change the y to an f(x). Then, if you plug something in for x also replace it in f(x). For example, if x=3 then the equation would be f(3)=2(3)-3.

solve this and show work​

Answers

Answer:

1.71

Step-by-step explanation:

x/4 = 3/7

4 * 3 = 12

12/7 = 1.714285714285714

Rounded to the nearest hundreths, the answer is  1.71

PLEASEE help

There are 2.54 centimeters in 1 inch. There are 100 centimeters in 1 meter. To the nearest inch, how many inches are in 5 meters? Enter the answer in the box. inches​

Answers

The number of inches in 5 m is 196.85 inches

Conversion scale 2.54 cm = 1 inch100 cm = 1 m

How to convert 5 m to cm

1 m = 100 cm

Therefore,

5 m = 5 × 100

5 m = 500 cm

How to convert 500 cm to inches

2.54 cm = 1 inche

Therefore,

500 cm = 500 / 2.54

500 cm = 196.85 inches

Thus, there are 196.85 inches in 5 m

Learn more about conversion:

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11b.) A sign in a bakery gives the following options. Find each unit price to the nearest cent, and show your reasoning. You can get 54 cupcakes for $137. What is the cost of ONE cupcake?

O $2.57
O $2.52
O $ 2.53
O $2.54​

Answers

Answer:

Step-by-step explanation:

137/54=c/1

c=$2.537

c=$2.54 (to nearest cent)

Find the slope of the line
-2/1
1/2
-1/2
2/1

Answers

Answer:

1/2

Step-by-step explanation:

you the x and the y intercepts!

the X intercept is (4,0) and the Y intercept is (0,-2)

and in having those two intercepts, it made solving for the slope a whole lot easier!!!

heres what you do:

-2 - 0  =   -2

0 - 4  =   -4

and that can be simplified down to 1/2 :D

i wasn't quite sure what the numbers you put in the question were, so i just looked at the picture :D hope this helps!!!

Simplify.
(-4t^2+6t-2)+(t²+7t+3)

Answers

Answer:

(-4t^2+6t-2)+(t²+7t+3)

-4t²+6t-2+t²+7t+3

-4t²+t²+6t+7t-2+3

-3t²+13t+1

6*2/7[tex]6*2/7[/tex]

Answers

Answer:

[tex]\frac{12}{7}[/tex] or [tex]1 \frac{5}{7}[/tex]

Step-by-step explanation:

If your question was [tex]6[/tex] times [tex]\frac{2}{7}[/tex], you just turn the 6 into [tex]\frac{6}{1}[/tex], leave the [tex]\frac{2}{7}[/tex] as it is. Multiply: [tex]\frac{6}{1} *\frac{2}{7}[/tex] to get: [tex]\frac{12}{7}[/tex]. This can simplify to: [tex]1 \frac{5}{7}[/tex].

Hope it helps!

Answer:

[tex] \frac{6}{133} [/tex]

Step-by-step explanation:

[tex] \frac{6 \times 2}{76} \times \frac{2}{7} \\ = \frac{12} {76} \times \frac{2}{7} \\ = \frac{6}{19} \times \frac{1}{7} \\ = \frac{6}{133} [/tex]

find what x is 17+7x=x+5

Answers

Step-by-step explanation:

17+7x=x+5

6x=-12

x=-2

Hope it helps you

Answer:

x= -2

Step-by-step explanation:

6x= -12 (subract x on each side then 17 on each side)

x=-2 (divide each side by 6)

L
60°
2
70°
N
M
What is the measure of ZKPN?
O A 350
OB. 50°
C. 60°
O D. 65°
E. 70°

Answers

Answer:

ZKPN=LPN

60+70+?=180

60+70+50=180

Given:
f(x)=x²-5
s(x) = x² +5

Answers

The answer is - balalalalalalalalalak you should figure it out

5/4 = _____ ÷ _____ please help me

Answers

Answer:

1.25

Step-by-step explanation:

5 / 4 = 1.25

I hope this helps u! :D

Answer:

5 divided by 4

Step-by-step explanation:

Jasmine can type 675 words in 18 minutes. At the same speed, how many words can she type in 40 minutes?

Answers

Answer:

675/18=37.5

37.5×40=1500

Step-by-step explanation:

ANSWER 1500 HOPE THIS HELP:)

Answer:

1500 words

Step-by-step explanation:

675 divided by 18 will give you the speed which is 37.5

40 x 37.5 = 1500

What would happen if you subtracted the equation for x from the equation for 10x?

Answers

Answer:

9x

Step-by-step explanation:

If you have 10 x and you subtract one, you get left with 9 x.

Think of it as objects. You have 10 apples and someone takes an apple, what do you have left? 9.

Answer:

9x

Step-by-step explanation:

If you have 10 x and you subtract one, you get left with 9 x.

Think of it as objects. You have 10 apples and someone takes an apple, what do you have left? 9x = 3

a plane drives at a constant. speed it take 4 hours to travel 2,240 miles. what is the planes speed in miles per hour?

Answers

Answer: 560 mph

Step-by-step explanation:

Distance = rate*time

2,240 = rate*(4)

rate = 560mph

i’m pretty sure it’s 560 mph

Tyrone spends $2 on ingredients for every $7 of revenue he collects selling
sandwiches at his shop. Tyrone collects $2100 selling sandwiches in a day. What
is Tyrone's PROFIT for the day?*
Cost ($)
Revenue ($)
2
7
2100

Answers

2+7+2100 it would be = $2,109

Identify the transformation that was applied to this letter


A. Rotation about the origin
B. Reflection over the x-axis
C. Translation
D. Reflection over the y-axis

Answers

it should be A ) Rotation about the origin

Ariana found an awesome deal on a new backpack when she went back to school shopping bag bag originally cost be dollars but it was on sale for 75% off

1 - 0.75b
75b
0.25b
B - 0.75b

Answers

Answer:

try b-0.75b

Step-by-step explanation:

Cost of the bag after the discount is given by the equation A = B - 0.75B

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the cost of the bag be represented as B

Now , the equation will be

The discount percentage of the bag is = 75 %

So , the cost of the bag after discount = cost of the bag - ( cost of the bag x discount percentage )

Substituting the values in the equation , we get

The cost of the bag after discount = B - ( 75/100 ) B

On simplifying the equation , we get

The cost of the bag after discount = B - 0.75B

Hence , the equation is B - 0.75B

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