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3 years ago

How do you work this

Mathematics

1 answer:

aleksley [76]3 years ago

7 0

Answer:

I believe the answer is B. it is correct if it says, 1: 1,200

Step-by-step explanation:

Because the ratio is 1: 1,200

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Find the common ratio of the sequence. 3,-9,27,-81

romanna [79]

Answer:

r = - 3

Step-by-step explanation:

To find the common ratio r, divide consecutive terms

- 9 ÷ 3 = - 3

27 ÷ - 9 = - 3

- 81 ÷ 27 = - 3

Thus common ratio = - 3

7 0

3 years ago

Construct the described data set. The entries in the data set cannot all be the same. The median and the mode are the same. What

Y_Kistochka [10]

Answer:

Option A

Step-by-step explanation:

The median is the value that lies in the middle of the data when the data set is ordered.

It is also the value that separates the higher half of the dataset from the lower half of the dataset.

5 0

3 years ago

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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

45 is 0.9% of what number

RUDIKE [14]

Answer:

0.405

Step-by-step explanation

45 x 0.9%= 0.405

8 0

3 years ago

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A triangle has angle measurements of 41°, 41°, and 98°. What kind of triangle is it?

Ivahew [28]

Answer:

isosceles triangle?????????????????.................

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3 years ago

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