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4 years ago

Eight students, randomly selected from a large class, were asked to keep a record

Mathematics

1 answer:

kvasek [131]4 years ago

7 0

For A, the scares depend on the hours studying, there is a positive relationship between the two.

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What is the product of -2/5 * (-11/12) in simplest form.

Leya [2.2K]

Answer:

the answer is 11/30

Step-by-step explanation:

when you do the original equation it on 22/60 and that simplified is 11/30

4 0

3 years ago

800 out of 1/10 is what?

lesya692 [45]

Answer:

If you meant what is 1/10 of 80 the answer is 80

Step-by-step explanation:

4 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

When constructing parallel lines with a compass and straight edge how should you start construction

Andrews [41]

Draw two lines that never intersects and those are parallel line. A compass and straightedge helps you make the lines straight.

8 0

3 years ago

Someone please hurry and help with number 4 and 6

makkiz [27]

Answer:

4.) y= 3x-2 6) y= 4

Step-by-step explanation:

m= 3 , (-2,-8)

y-(-8) = 3(x-(-2))

y+8= 3x+6

y= 3x-2

m= 0 , (5,4)

y- 4= 0(x-5)

y= 4

3 0

3 years ago

Read 2 more answers