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2 years ago

-15(y2)4 divide 5y3y4

Mathematics

1 answer:

Nadya [2.5K]2 years ago

7 0

Answer:

-3y

Step-by-step explanation:

-15(y2)4 ÷5y3y4

Rewrite the division as a fraction

-15(y2)4

5y3y4

Multiply y3 by y4 by adding the exponents

-5(y2)4

5y7

Cancel the common factor of -15 and 5

-3(y2)4

Multiply the exponents in (y2)4

-3y8

Cancel the common factor of y8 and y7

Factor y7 out of -3y8

y7(-3y)

Multiply by 1

y7(-3y)

y7 × 1

Cancel the common factor which is y7 and y7

Rewrite the expression

-3y

Divide -3y by 1

-3y

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3 years ago

While attending a school carnival, you estimate the ratio of children to adults as If there are 180 people at the carnival, abou

Karolina [17]

Answer:

180-n_c

Step-by-step explanation:

Given that the ratio of children to adults is 2:1.

Let $n_c$ and $n_a$ be the number of children and adults in the school carnival.

So, $\frac {n_c}{n_a} = \frac 2 1$

$\Rightarrow n_c = 2 n_a \cdots(i)$

Given that the total number of peoples in the carnival =180

So, $n_c + n_a = 180$

$\Rightarrow n_a = 180-n_c \cdots(ii)$

Now, from equations (i) and (ii), we have

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Hence, the number of children in attendance is 120.

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3 years ago

When solving systems of equations with the elimination

viktelen [127]

Step-by step explanation:

That's a great question. Look for things such as these:

x=x (infinite solution)

x=12 (one solution)

x+3 = x + 5 (no solutions)

https://youtu.be/bq5gDsEdN3Q this video has more information, copy and paste the link into your search engine.

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3 years ago

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Step-by-step explanation:

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3 years ago

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melomori [17]

Answer:

The smallest sample size to satisfy the conditions is n=500.

Step-by-step explanation:

The condition for performing the inference related to the sample size is that, for all the categories, the expected success and failures in the sample are at least 10:

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The largest sample size required will be for the minimum p or (1-p).

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3 years ago