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Angelina_Jolie [31]
3 years ago
5

If a number is 20% more than the other, how many percent is the second number less than the first ?​

Mathematics
2 answers:
ohaa [14]3 years ago
7 0
<h2>Answer:</h2>

16.66%

<h2>Step-by-step explanation:</h2>

We can take an example:

Let's say the smaller number is 100 then the bigger number is 20% more that means 120.[<u>Formula</u>:(20/120)*100]Now the smaller number that means the second is 20 less that the first and now we need to know how much percent is 20 from 120 and that means the sixth part of 100% that means 16.66%.

EleoNora [17]3 years ago
6 0

Answer:

<h2>16.666...%</h2>

Step-by-step explanation:

Let y be the first number

and x be the second number

then

y=x+20%x = (120/100)x

y=(120/100)x ⇔ x=(100/120)y

let‘s write x=(100/120)y in the form x=(p/100)y where p is a number to find

100/120=p/100 ⇔ p=(100×100)/120 = 83.333.....

then x = (83.333/100)y

since 83.333 = 100 - 16.666

then x = y - 16.666%y

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The rabbit population of Springfield, Ohio was 144,000 in 2016. It is expected to decrease by about 7.2% per year. Write an expo
xeze [42]
<h2>Hello!</h2>

The answer is:

In 2036 there will be a population of 32309 rabbits.

<h2>Why?</h2>

We can calculate the exponential decay using the following function:

P(t)=StartAmount*(1-\frac{percent}{100})^{t}

Where,

Start Amount, is the starting value or amount.

Percent, is the decay rate.

t, is the time elapsed.

We are given:

StartAmount=144,000\\x=7.2(percent)\\t=2036-2016=20years

Now, substituting it into the equation, we have:

P(t)=StartAmount(1-\frac{percent}{100})^{t}

P(t)=144000*(1-\frac{7.2}{100})^{20}

P(t)=144000*(1-0.072)^{20}

P(t)=144000*(0.928)^{20}

P(t)=144000*(0.928)^{20}

P(t)=144000*0.861=32308.888=32309

Hence, we have that in 2036 the population of rabbis will be 32309 rabbits.

Have a nice day!

5 0
3 years ago
At the beginning of Jack's diet, he was 257 pounds. If he lost 3 pounds per week, find his weight after
Cloud [144]

Answer:

A loss of weight means we subtract from Jack's current weight. 

Step-by-step explanation:

A loss of weight means we subtract from Jack's current weight. New Weight = Current Weight - Weight Loss per week * number of weeksNew Weight =257 - 3*12New Weight =257 - 36New Weight = 221

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2 years ago
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sdas [7]

Step-by-step explanation:

Left hand side:

4 [sin⁶ θ + cos⁶ θ]

Rearrange:

4 [(sin² θ)³ + (cos² θ)³]

Factor the sum of cubes:

4 [(sin² θ + cos² θ) (sin⁴ θ − sin² θ cos² θ + cos⁴ θ)]

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4 [sin⁴ θ − sin² θ cos² θ + cos⁴ θ]

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4 [sin⁴ θ + 2 sin² θ cos² θ + cos⁴ θ − 3 sin² θ cos² θ]

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Finally, apply Pythagorean identity and simplify:

4 − 3 (1 − cos² (2θ))

4 − 3 + 3 cos² (2θ)

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3 years ago
A cargo van is carrying 20 identical steel cylinders.Each cylinder contains compressed oxygen.Altogether,the cylinders weigh 1/2
sergeinik [125]
Each container is 50 pounds, forget about the second sentence it's just there to confuse you. One ton is 2,000 pounds, half of that is 1,000 lbs. 1,000 divided by 20 is 50. 50 pounds each.
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3 years ago
Translate -y+8 into words
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Negative Y plus eight 
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