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3 years ago

14

you buy a new mountain bike for $200. tha value of the bike decreases by 25% each year. how much is your bike worth after 3 year

s. this is growth or decay

1 answer:

Brilliant_brown [7]3 years ago

8 0

Answer:84.375

Step-by-step explanation:

i mean if you by a bike for 200 hundread and every year it goes down by 25% you would just subtract 25 % 3 times ;)

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A 10% increase followed by another 10% increase is not the same as a total increase of

AlexFokin [52]

Answer:

21%

Step-by-step explanation:

Another 10% increased means it becomes 110*110/100 = 121. The first 10% increase means the second 10% increase will be an actual 11% increase from the original, so it will be a total of 21%.

6 0

3 years ago

Read 2 more answers

ANEK [815]

See below for the proof of the equation $\frac{ax + by}{x + y} - \frac{ax - by}{x - y}= 2(a - b)$

<h3>How to prove the equation?</h3>

The equation is given as:

$\frac{ax + by}{x + y} - \frac{ax - by}{x - y}= 2(a - b)$

Take the LCM

$\frac{(ax + by)(x - y) -(ax - by)(x + y)}{(x + y)(x - y)}= 2(a - b)$

Expand

$\frac{ax^2 - axy + bxy - by^2 -ax^2 - axy + bxy + by^2}{(x + y)(x - y)}= 2(a - b)$

Evaluate the like terms

$\frac{-2axy + 2bxy }{(x + y)(x - y)}= 2(a - b)$

Rewrite as:

$\frac{-2axy + 2bxy }{x^2 - y^2}= 2(a - b)$

Factorize the numerator

$\frac{2(a - b)(x^2 - y^2)}{x^2 - y^2}= 2(a - b)$

Divide

2(a - b)= 2(a - b)

Both sides are equal

Hence, the equation $\frac{ax + by}{x + y} - \frac{ax - by}{x - y}= 2(a - b)$ has been proved

Read more about equations at:

brainly.com/question/2972832

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5 0

2 years ago

rocky reifenstuhl won the 130-mile race on his bicycle. he finished in 11 hours and 45 minutes. What was his average speed in mi

Marat540 [252]

R=D/T

130 = r x 11.75

R=130/11.75=11.06

11.06 MPH

8 0

3 years ago

Pls do fast due today<br><br> Find DE.

andrey2020 [161]

Answer:

Step-by-step explanation:

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3 years ago

I REALLY NEED HELP A$AP

Aleksandr [31]

Answer:

The new length of the garden is 80 ft, the new width is 40 ft, and the total area of the new garden is 3200 ft². The area of the new garden will be 8 times larger than the current one. Jane should make her garden 4 times the current length.

Step-by-step explanation:

Juan's garden is 40 ft in length, he wishes to make the length 2 times longer:

$2 \times 40 = 80$

Juan's garden is 10 ft in width, he wishes to make the width 4 times longer:

$4 \times 10 = 40$

With a length of 80 and width of 40, the total area of the garden is

$40 \times 80 = 3200$

Since Juan wanted to make the length 2 times longer and the width 4 times longer, the total area of the garden will be

$2 \times 4 = 8$

larger than the current garden.

Jane wants to make her garden 20 times the size. Since she's making her garden 5 times longer in width, she needs to make the length of her garden

$\frac{20}{5} = 4$

4 times longer.

4 0

3 years ago