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3 years ago

How to calculate the percentage of the third year .i want extra detailed steps

Mathematics

1 answer:

nirvana33 [79]3 years ago

8 0

Nobody wants to do these because, I don't know why.

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Which of the following measurements, in centimeters (cm), could be the lengths of the sides of a triangle? Select all that apply

Ray Of Light [21]

Answer:

6cm, 6cm, 13cm

4cm, 10cm, 14cm

5cm, 11cm, 15cm

5 0

3 years ago

Convert 0.7135° to minutes and seconds. Round to the nearest second

Maru [420]

0.7135(60)=42'+.81'

42'+.81(60)

42'+48.6" which is:

42' 49" (to nearest second)

7 0

3 years ago

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A 200-liter tank initially full of water develops a leak at the bottom. Given that 20% of the water leaks out in the first 5 min

Leya [2.2K]

Answer:

127.53 liters left after 10 minutes

Step-by-step explanation:

Let

$A \to Amount$

$t \to time$

Given

$A(0) = 200$ --- initial

$A(5) = 200 * (1 - 20\%) = 160$ --- the amount left, after 5 minutes

Required

$A(10)$ --- amount left after 5 minutes

To do this, we make use of:

$A(t) = A(0) * e^{kt}$

$A(5) = 160$ implies that:

$160 = 200 * e^{k*5}$

Divide both sides by 200

$0.80 = e^{k*5}$

Take natural logarithm of both sides

$\ln(0.80) = \ln(e^{k*5})$

$\ln(0.80) = \ln(e^{5k})$

$\ln(0.80) = 5k\ln(e)$

So, we have:

$-0.223 = 5k$

Divide by 5

$k = -0.045$

So, the function is:

$A(t) = A(0) * e^{kt}$

$A(t) = 200 * e^{-0.045t}$

The amount after 10 minutes is:

$A(10) = 200 * e^{-0.045*10}$

$A(10) = 200 * e^{-0.45}$

$A(10) = 127.53$

3 0

3 years ago

three people have 1/2 of a pizza to share equally. what fraction of a whole pizza will each person get

Anna35 [415]

Answer:

⅙

Step-by-step explanation:

½÷3=½×⅓=⅙

therefore ⅙ for each person.

7 0

3 years ago

Read 2 more answers

Maths Trigonometry Question<br> 100 points up for grabs!<br> Will give brainliest to whoever answers

Gekata [30.6K]

Answer:

14) 21.136505024965 m

15) 43.076759215619 km

Step-by-step explanation:

14)

let h be the height of the lighthouse:

tan(41.3) = 18.7/h

Then

h = 18.7÷tan(41.5)

= 21.136505024965 m

………………………………………

15)

90-71.4 =18.6

Let s be the distance that the plane flew

towards the south:

tan(90 - 71.4) = s/128

Then

tan(18.6) = s/128

Then

s = tan(18.6)×128

= 43.076759215619 km

5 0

2 years ago

Read 2 more answers