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Andrej [43]
3 years ago
15

Prove the following identities:​

Mathematics
1 answer:
siniylev [52]3 years ago
7 0
The picture won’t load message me so i can answer !!
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Calculate the marked price(original price)if after 20% discount, the price of an article.
Elina [12.6K]

Answer: An article was sold at a 20% discount, at Rs. 400. What was its marked price?

Let M denotes the required marked price of the given article.

Hence from above data we get following relation,

(1 - 20/100)*M = 400

or (4/5)*M = 400

or M = (5/4)*400 = 500 (Rs) [Ans]

Step-by-step explanation:

4 0
3 years ago
Esther the Clown does face painting at the city carnival. She paints 7 faces every 21 minutes and spends the same amount of time
Lena [83]

Answer:   M=3f     hope this helps guys

7 0
3 years ago
Please help ASAP! I will mark Brainliest! Please answer CORRECTLY! No guessing! Show your work!
Amanda [17]

Answer:

P represents the population in year 0

Step-by-step explanation:

The exponential growth function is f(x) = a (1 + r)^t, where a is the initial

amount (at t = 0), (1 + r) is the factor of growth , r is the rate of growth

in decimal ant is the time of growth

the function C(t) = P(1 + r)^t represents the population of

centerville at year t, where P is the initial population and r is the

rate of increase

If your investment is increased 10% annually, then that means

each year, your total has multiplied itself by 110% (the growth factor

is 1 + 10/100 = 1.1)

(1 + r) is the factor grows each year

C(t) = P(1 + r)^t

C depends on P(starting population) , r(the increasing rate and

t(the time in year)

r is the rate of increase means the percentage of increasing , then

0 < r < 1

r is not less than 0

P is the initial amount when t = 0

P represents the population in year 0

4 0
3 years ago
Read 2 more answers
The regular price of a code is $32 it is on sale at 25% off the sales tax is 6.5% what is the final cost of code
Nutka1998 [239]

Answer:

$25.56

Step-by-step explanation:

first find the discount

32 • 0.25 = 8

32 - 8= 24

find the tax

24 • 0.065 = 1.56

24 +1.56 = 25.56

so the final price is $ 25.56

3 0
3 years ago
Read 2 more answers
What is the mean for the data set?
myrzilka [38]

Answer:

14

Step-by-step explanation:

you add up all the numbers and divide that by the amount of numbers there. 69/5=13.8 ~ 14

6 0
3 years ago
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