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3 years ago

8) 8 kg of apples cost Rs.800, what is the cost of 15 kg of apples?

Mathematics

1 answer:

Rama09 [41]3 years ago

8 0

Answer: 4

Step-by-step explanation:Using unitary method :-

5 kg apple → 600 Rs

1 kg apple →

600

= 120 Rs

27 kg apple →120×27=3240 Rs

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If a = 3, solve the expression 3a + 6 +5a.

Tanya [424]

Answer:

3a+6+5a

3×3+6+5×3

9+6+15

15+15

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3 years ago

A type of bacteria has a very high exponential growth rate of 80% every hour. If there are 10 bacteria, determine how many will

Lana71 [14]

<h3>There are 189 bacteria in 5 hours</h3><h3>There are 13382588 bacteria in 1 day</h3><h3>There are $10(1.8)^{168}$ bacteria in 1 week</h3>

<em><u>Solution:</u></em>

Given that,

A type of bacteria has a very high exponential growth rate of 80% every hour

There are 10 bacteria

<em><u>The increasing function is given as:</u></em>

$y = a(1+r)^t$

Where,

y is future value

a is initial value

r is growth rate

t is time period

From given,

a = 10

$r = 80 \5 = \frac{80}{100} = 0.8$

<em><u>Determine how many will be in 5 hours</u></em>

Substitute t = 5

$y = 10(1 + 0.8)^5\\\\y = 10(1.8)^5\\\\y = 10 \times 18.89568\\\\y \approx 188.96$

y = 189

Thus, there are 189 bacteria in 5 hours

<em><u>Determine how many will be in 1 day ?</u></em>

1 day = 24 hours

Substitute t = 24

$y = 10(1 + 0.8)^{24}\\\\y = 10(1.8)^{24}\\\\y = 10 \times 1338258.84\\\\y = 13382588.45\\\\y \approx 13382588$

Thus, there are 13382588 bacteria in 1 day

<em><u>Determine how many will be in 1 week</u></em>

1 week = 168

Substitute t = 168

$y = 10(1 + 0.8)^{168}\\\\y = 10(1.8)^{168}$

Thus there are $10(1.8)^{168}$ bacteria in 1 week

6 0

3 years ago

PLEASE HELP!

nikklg [1K]

A: The other related equations would be:

K = °C + 273.15

K = °F + 457.87

<em>Note: There are other equations that can be related, these are just ones that I find to be related. This is open to interpretation. </em>

23° C + 273.15 = 269.15 K

300 K - 273.15 = 26.85 °C

300 Kelvins is greater than 25 degrees Celsius.

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3 years ago

What is y=x+2and 2x+y=8

Leya [2.2K]

Answer:

1. x=y−2

2. -1/2y + 4

Step-by-step explanation:

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3 years ago

Ryan buys two hoodies and a pair of sneakers that cost 85.36. If his total is 145.50, how much did one hoodie cost?

RoseWind [281]

Answer:

72.75

Step-by-step explanation:

1) take the big number and divide it by 2

2) the answer will be 72.75 per 1 hoodie

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2 years ago

8) 8 kg of apples cost Rs.800, what is the cost of 15 kg of apples?​

8) 8 kg of apples cost Rs.800, what is the cost of 15 kg of apples?