3 years ago

Can anyone help my brother please it’s test

Mathematics

1 answer:

VMariaS [17]3 years ago

7 0

Answer:

no options

so how we can find it ?

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Dafna1 [17]

Answer:

Step-by-step explanation:

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8 0

3 years ago

During two years, the population of birds of an island became 7 times more than before. If the first year increase in the popula

nordsb [41]

Answer:

The percent increase of the second year is 400%.

Step-by-step explanation:

Consider the provided information.

Let the population of birds was x.

After 2 years the population becomes 7 times more than before.

Therefore, after 2 years population is 7x.

In first year increase in the population was 40%.

Population after 1st year = x + 40% of x

Population after 1st year = x + 0.40x

Population after 1st year = 1.4x

The population increase from 1st year to 2nd year is: 7x-1.4x=5.6x

Thus the percentage increase is:

$\% increase=\frac{5.6x}{1.4x}\times100=400\%$

Hence, in second year the population of birds increase by 400%.

6 0

3 years ago

Suppose a jar contains 15 red marbles and 19 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same

Kay [80]

Answer: $\bold{\dfrac{35}{187}}$

<u>Step-by-step explanation:</u>

1st marble and 2nd marble

$\dfrac{15\ red}{34\ total}$ $\times$ $\dfrac{14\ red}{33\ total}$ $=\dfrac{15\times 14}{34\times 33}=\dfrac{5\times 7}{17\times 11}= \boxed{\dfrac{35}{187}}$

8 0

3 years ago

Find the least common multiple of 6c^3 and 15y

zubka84 [21]

Answer:

The answer is 30c^3y

Step-by-step explanation:

The LCM is the smallest number that all the numbers can divide in.

6 0

3 years ago

customers can pick up their own pumpkins at the great pumpkin patch. they pay $4 to enter the patch and $3 per round for the pum

gayaneshka [121]

y = 4 + 3x

4 being the entrance cost and 3x being the 3 dollars per pound

8 0

3 years ago

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