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3 years ago

27a-(3b-(2a-(4a-c)+6a (2a+3b-c)

Mathematics

1 answer:

lawyer [7]3 years ago

3 0

Answer:

12a^2+18ab-6ac+25a-3b+c

Step-by-step explanation:

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belka [17]

Answer:

the first equation

Step-by-step explanation:

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3 years ago

ollegr [7]

This is a simple exercise with rates.
You just have to divide the total profit of the store, that year, per the profit of the particular store.

[3.0479×10⁸ dollars] ÷ [2.102×10⁶ dollars] = 1,45 x 10²

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4 years ago

6. which solid did the net form

In-s [12.5K]

Answer:

Hexagonal Pyramid

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3 years ago

I needddd helppp please

Montano1993 [528]

Answer:

X=66°

Step-by-step explanation:

Because it is an isosceles triangle, the 2 missing angles are going to be the same size.

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3 years ago

Find the indicated conditional probability

andrezito [222]

Given:

The two way table.

To find:

The conditional probability of P(Drive to school | Senior).

Solution:

The conditional probability is defined as:

$P(A|B)=\dfrac{P(A\cap B)}{P(B)}$

Using this formula, we get

$P(\text{Drive to school }|\text{ Senior})=\dfrac{P(\text{Drive to school and senior})}{P(\text{Senior})}$ ...(i)

From the given two way table, we get

Drive to school and senior = 25

Senior = 25+5+5

= 35

Total = 2+25+3+13+20+2+25+5+5

= 100

Now,

$P(\text{Drive to school and senior})=\dfrac{25}{100}$

$P(\text{Senior})=\dfrac{35}{100}$

Substituting these values in (i), we get

$P(\text{Drive to school }|\text{ Senior})=\dfrac{\dfrac{25}{100}}{\dfrac{35}{100}}$

$P(\text{Drive to school }|\text{ Senior})=\dfrac{25}{35}$

$P(\text{Drive to school }|\text{ Senior})=0.7142857$

$P(\text{Drive to school }|\text{ Senior})\approx 0.71$

Therefore, the required conditional probability is 0.71.

5 0

3 years ago

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