Barry buys a new washing machine.
The value of the washing machine depreciates by 20% each year.
(a)
Barry says 'after 5 years the washing machine will have no value'.
Barry is wrong. Explain why.
Barry wants to work out the value of the machine after 2 years.
(b)
By what single decimal number should Barry multiply the value of the machine when new?

Answers

Answer 1

Answer:

The machine decreases in value by 20% each year.

After 1 year the machine is worth only .8 of its original value.

The machine will only decrease by .2 * (.8 A) in the second year not .2 * A where A is the  original amount.

A1 = .8 A

A2 = .8 A1 = .64 A    value of machine after 2 years

.8 is the value Barry needs when the machine is  new

.8^n never goes to zero

After 10 years   value = .8^10 A = .11  A of its original value


Related Questions

The first one to answer gets brainy

Answers

The answer is 64 miles per hour

The distance travelled in one hour is 64 miles

speed = distance / time
speed = 64 / 1

The speed is 64 miles per hour

20 points!!!
What is the solution to the system
(1) x+y+z=-3
(2)3y-z=4
(3) 2x-y-2z=-5

Answers

Answer:

I'm sorry but which ones are the x, y, and z, like (x, z, y)?

Step-by-step explanation:

By the way I promise you respond back and answer just making sure I know which variables are what so I can answer with the correct answer.

What is the sample space for a spinner with four equal sections, numbered 1 to 4?


A. 1, 2, 3, 4

B. 4-1. 4-2. 4-3. 4-4

C. 1-1,1-2, 1-3, 1-4

D. 1, 2, 3, 4, 5
PLEASE HELP

Answers

Answer:

A. 1, 2, 3, 4

Step-by-step explanation:

I. When sample space means all possible case could happend.

In this case we have 4 equal sections numbered 1 to 4.

So from 1st section to 4th sections could happend fairly.

That makes 1, 2, 3, 4 is the right answer.

Hope that help :)

You pay $80 for a game system. The monthly rental fee for games
is m dollars. Your cost for the year is $188. Using the equation
12m + 80 = 188, how much is your monthly fee?

Answers

Answer:  9

Step-by-step explanation:

12m + 80 = 188

        -80    - 80

12m = 108

12m = 108

12         12

m = 9

Clasifica los siguientes números en los conjuntos numéricos a los que pertenezcan. Si es posible
Exprésalos en forma de fracción.
a)
8
c) −43
e)
1,27
g)
1,01002000300004...
b) −0,81
d) numero PI
f) − 64
h) 6

Answers

Please write ur question properly

At 1 pm one day the temperature inside a freezer was -20°C
The freezer broke down.
The temperature inside the freezer went up by 4°C every hour after 1pm.
At what time did the temperature inside the freezer reach 0°C?

Answers

Answer:

6 p.m.

Step-by-step explanation:

Tìm giá trị nhỏ nhất của hàm số: y = cos 2x + 4cos x - 3

Answers

Answer:

upp7fpfpzfpufpufpufpufpu

Step-by-step explanation:

uxcicicovovovovovvNC coordinatorby McKnight

2.07 divded by 0.9
what does that equal

Answers

Answer:

2.3

Step-by-step explanation:

2.07 divided by 0.9 is
2.3

8/x = 2x+1 Solve this pls

Answers

Hope that helps………………
It is -1 -sqrt 65/4 and -1 + sqrt 65/4

Two lighthouses are located 75 miles from one another on a north-south line. If a boat is spotted S 40o E from the northern lighthouse and N 21o E from the southern lighthouse, how much closer is the closest lighthouse to the boat than the lighthouse furthest away? The northern lighthouse is 51.3 miles closer than the southern lighthouse. The northern lighthouse is 24.4 miles closer than the southern lighthouse. The northern lighthouse is 79.9 miles closer than the southern lighthouse. The northern lighthouse is 17.0 miles closer than the southern lighthouse.

Answers

Answer:

The northern lighthouse is approximately [tex]24.4\; \rm mi[/tex] closer to the boat than the southern lighthouse.

Step-by-step explanation:

Refer to the diagram attached. Denote the northern lighthouse as [tex]\rm N[/tex], the southern lighthouse as [tex]\rm S[/tex], and the boat as [tex]\rm B[/tex]. These three points would form a triangle.

It is given that two of the angles of this triangle measure [tex]40^{\circ}[/tex] (northern lighthouse, [tex]\angle {\rm N}[/tex]) and [tex]21^{\circ}[/tex] (southern lighthouse [tex]\angle {\rm S}[/tex]), respectively. The three angles of any triangle add up to [tex]180^{\circ}[/tex]. Therefore, the third angle of this triangle would measure [tex]180^{\circ} - (40^{\circ} + 21^{\circ}) = 119^{\circ}[/tex] (boat [tex]\angle {\rm B}[/tex].)

It is also given that the length between the two lighthouses (length of [tex]\rm NS[/tex]) is [tex]75\; \rm mi[/tex].

By the law of sine, the length of a side in a given triangle would be proportional to the angle opposite to that side. For example, in the triangle in this question, [tex]\angle {\rm B}[/tex] is opposite to side [tex]\rm NS[/tex], whereas [tex]\angle {\rm S}[/tex] is opposite to side [tex]{\rm NB}[/tex]. Therefore:

[tex]\begin{aligned} \frac{\text{length of NS}}{\sin(\angle {\rm B})} = \frac{\text{length of NB}}{\sin(\angle {\rm S})} \end{aligned}[/tex].

Substitute in the known measurements:

[tex]\begin{aligned} \frac{75\; \rm mi}{\sin(119^{\circ})} = \frac{\text{length of NB}}{\sin(21^{\circ})} \end{aligned}[/tex].

Rearrange and solve for the length of [tex]\rm NB[/tex]:

[tex]\begin{aligned} & \text{length of NB} \\ =\; & (75\; \rm mi) \times \frac{\sin(21^{\circ})}{\sin(119^{\circ})} \\ \approx\; & 30.73\; \rm mi\end{aligned}[/tex].

(Round to at least one more decimal places than the values in the choices.)

Likewise, with [tex]\angle {\rm N}[/tex] is opposite to side [tex]{\rm SB}[/tex], the following would also hold:

[tex]\begin{aligned} \frac{\text{length of NS}}{\sin(\angle {\rm B})} = \frac{\text{length of SB}}{\sin(\angle {\rm N})} \end{aligned}[/tex].

[tex]\begin{aligned} \frac{75\; \rm mi}{\sin(119^{\circ})} = \frac{\text{length of SB}}{\sin(40^{\circ})} \end{aligned}[/tex].

[tex]\begin{aligned} & \text{length of SB} \\ =\; & (75\; \rm mi) \times \frac{\sin(40^{\circ})}{\sin(119^{\circ})} \\ \approx\; & 55.12\; \rm mi\end{aligned}[/tex].

In other words, the distance between the northern lighthouse and the boat is approximately [tex]30.73\; \rm mi[/tex], whereas the distance between the southern lighthouse and the boat is approximately [tex]55.12\; \rm mi[/tex]. Hence the conclusion.

HEEELP PLEASE
A company prepares a graph of its profit forecast. The annual budget predicts monthly income of at least $5000 more than expenditures.
What inequality models this situation?
Let x represent the expenditures in dollars for a given month and let y represent the income in dollars for the same month.
Express your answer as an inequality in slope-intercept form.

Answers

Answer:

that's he

ard

Step-by-step explanation:

sole it your seldf fast ⏩ fast food in advance of my head I can you e d f 3

A building is 240 feet tall. On a scale drawing, 1/4 inch = 10 feet. What is the height of the building in the scale drawing?

15 in
9 in
60 in
13 in

Help Pleaseee

Answers

Answer:

60 in = 240 ft

Step-by-step explanation:

240/4 = 60

15 x 4 = 60

9 x 4 = 36

60 x 4 = 240

13 x 4 = 52

6in

Think about it, 1/4 in equals to 10f.
Then 1 in would equal to 40feet.
That mean 6 in on the scale drawing would equal to 240 feet

whats x+10<6 as a inequality sign?

Answers

Answer:

x < -4

Step-by-step explanation:

x + 10 < 6

    -10 < -10

      x < -4

BRAINLIEST ASAP!!!!!!!!!! Please someone help

Answers

Answer B

When you shift the decimal two decimal places over you get 0.853


PLEASE PLEASE HELP WILL GIVE BRAINIEST AND ALOT OF POINTS PLEASE SHOW WORK TOO


a rectangle has a width of 1.75x+6.8 and a length of -3.5y - 2.7, find the perimeter


Answers

Answer:

3.5x + 13.6 - 7y -5.4

Step-by-step explanation:

Perimeter is equal to 2 times the sum of the length and width

2(1.75x+6.8-3.5y-2.7) = 3.5x + 13.6 - 7y -5.4

A rental car agency charges $220 per week plus $0.15 per mile to rent a car. How many miles can you travel in one week for $340?
The number of miles you can travel in one week for $340 is ?.

Answers

Answer:

800 miles

Step-by-step explanation:

You would make the equation .15x+ $200 and put that equal to 340 to get the equation:

.15x+$200=340

      -$200        (subtract the like term first)

.15x=120

.15x over 120

Your answer comes out to be x=800.

Dave ran 10km in 40 minutes. He rested for 5 minutes then ran a further 8 km in 35 minutes.Work out his average speed for the whole journey. (Give your answer in km/h)

Answers

Answer:

27/2 km/hr

Step-by-step explanation:

can u hurry and help please

Answers

Answer:

18.84

Step-by-step explanation:

Hope this helps :)

Answer:

18.84

The equation for circumference is 2πr which means that you times 2 by pi and then the radius which is 6 divided by 2 so 3. Then you get 6π which is 18.84

joyce is y years old.she is 10 years older than peter . what will be the sum oftheir ages ij 5 years time?​

Answers

your grammar is horrible lol but would i could make out is y is joyce’s age and peter is 10 so if joyce is 5 then it would be 15 for peter so 20 it’s pretty simple

Pls Help
Use slope-intercept form, y = mx + b, to find the value for the y-intercept (b) of a line that has a slope of 6 and passes through the point (3, –5).
b=
a. -23
b. -14
c. 21
d. 33
What is the new equation written in slope-intercept form?
a. y=6x-23
b. y=6x-14
c. y=6x+21
d. y=6x+33

Answers

Answer:

y-intercept: -23

y = 6x - 23

Step-by-step explanation:

Slope: 6

Point (3, -5)

y-intercept: -5 - (6)(3) = - 5 - 18 = - 23

Can someone pls help me
Pls get it right.

Answers

Using Pythagorean theorem

[tex]\\ \sf\longmapsto P^2=H^2-B^2[/tex]

[tex]\\ \sf\longmapsto P^2=8^2-(4\sqrt{3})^2[/tex]

[tex]\\ \sf\longmapsto P^2=64-48[/tex]

[tex]\\ \sf\longmapsto P^2=16[/tex]

[tex]\\ \sf\longmapsto P=4[/tex]

>> Answer

________

[tex] \: [/tex]

a² = c² - b²

a² = 8² - (4√3)²

a² = 64 - 48

a² = 16

a = √16

a = 4

Which of the following is an even function?
Of(x) = (x - 1)2
O f(x) = 8x
Of(x) = x2 - x
O f(x) = 7

Answers

Answer:

f(x) = 7

Step-by-step explanation:

In an even function of x, all powers of x are even (2, 4, 6, etc.).  

In this case we have f(x) = 7, or 7x^0, which is an even function because the power (0) of x is even.

(calculus) please help! will mark brainliest!

Answers

Hello friend,

The answer to your question is attached in the image uploaded by me. Please refer them.

✍️ By Benjemin ☺️

Can someone please help me

Answers

The last option; intersecting, but not perpendicular

plzzz help!!
Order the following from greatest to least.

Answers

Answer:

I think the answer is C

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

122%=122% 49/29=169% 26/15=173%, 1.98=198%

my head hurts help will ya?​

Answers

Solution : 24 × [20 + (5 × 3)] ÷ 8

So, first let's solve the integers within perenthesis

24 × [20 + 15] ÷ 8

24 × 35 ÷ 8

Now, we need to divide it first after which we'll multiply the rest

24 × 4.375

105

The answer should be 105

What is the time on this clock?

Answers

Answer:

11:53 ish.

Step-by-step explanation:

Which statement about the function y = −14x − 2 is true?

Answers

Answer:

slope is -14

X int. X is at 1/7

y int. y is at -2

Step-by-step explanation:

If you graph it you will see.

2 complementary angles are in the ratio 3:6. Find the angles​

Answers

Answer:

The angles are 60°, and 30°

Step-by-step explanation:

Complementary angles add up to 90°

3 = 6 = 9

90/9 = 10

10 * 3 = 30

10 * 6 = 60

-Chetan K

I need these ASAP………..

Answers

Step-by-step explanation:

1) 3x - 4 = 86 + 24

3x - 4 = 110

3x = 110 + 4 = 114

x = 114/3 = 38

therefore, value of x is 38.

2) -10x = 30 + 90

-10x = 120

x = 120/10 = 12

x = 12

therefore, value of x is 12.

3) -8x + 23 + 51 = 130

-8x + 74 = 130

-8x = 130 - 74

-8x = 56

x = 56/8

x = 7

therefore, value of x is 7.

4) -9 + 2x = 59 + 90

-9 + 2x = 149

2x = 149 + 9

2x = 158

x = 158/2 = 79

x = 79

therefore, value of x is 79.

hope this answer helps you dear...take care !

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