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3 years ago

Can someone help me please!

Mathematics

1 answer:

nataly862011 [7]3 years ago

4 0

Answer:

Its between two and three.

Step-by-step explanation:

If you multiply 2/3 times four it would give you 2.3. So, its between two and three. B

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How many inches are in 125 1 2 5 groups of 123 1 2 3 inches?

Sveta_85 [38]

Answer: 15,375 inches

Step-by-step explanation: If there are 123 inches in each group, and there are 125 groups, it is a multiplication operation.

123 × 125 = 15375

The format of the question makes it a bit confusing. I hope this helps.

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3 years ago

What is the volume of a cylinder of a radius if 12cm and height 8cm

Nookie1986 [14]

Answer:

V≈3619.11cm³

Step-by-step explanation:

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3 years ago

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Describe all situation where vertical angles are also supplementary

Nataly_w [17]

Vertical angles are always the same size. if they are supplementary the measures must add to 180. 180/2=90. vertical angles are supplementary only when they are right angles, our 90°

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4 years ago

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The population of a colony of mosquitoes obeys the law of uninhibited growth. If there are 1000 mosquitoes initially and there a

Anettt [7]

Answer:

1) The size of the colony after 4 days is 6553 mosquitoes

2) After $t = 4.9\ days$

Step-by-step explanation:

To answer this question you must use the growth formula

$N = N_0e ^ {kt}$

Where

$N_0$ is the initial population of mosquitoes = 1000

t is the time in days

k is the growth rate

N is the population according to the number of days

We know that when t = 1 and $N_0=1000$ then N = 1600

Then we use these values to find k.

$1600 = 1000e ^{k(1)}\\\\\frac{1600}{1000} = e ^ k\\\\ln(\frac{1600}{1000}) = k\\\\k = 0.47$

Now that we know k we can find the size of the colony after 4 days.

$N = 1000e ^ {0.47(4)}\\\\N = 6553\ mosquitoes$

To know how long it should take for the population to reach 10,000 mosquitoes we must do N = 10000 and solve for t.

$10000 = 1000e ^ {0.47t}\\\\10 = e ^ {0.47t}\\\\ln(10) = 0.47t\\\\t = \frac{ln(10)}{0.47}\\\\t = 4.9\ days$

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3 years ago

There are 12 men and 24 women in a chorus. What percent of the entire chorus is composed of women?

kati45 [8]

About 66 percent.
Because 24/36 are women, keep simplifying that divide by 6, 4/6, divide by 2, 2/3 = 0.66 = 66%.

7 0

4 years ago