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3 years ago

80Divided by 3 plz help

Mathematics

1 answer:

mojhsa [17]3 years ago

8 0

Answer:

Your answer is 26.667

hope this helps

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The difference between three times a number and seven is twenty. What is the number?

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Step-by-step explanation:

(9*3) = 27 which is 20 more than 7

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Find the range for f(x)=8x-3,given the domain is {-2,4,8,10}

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-19, 29, 61, 77

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4 years ago

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21. 6m – 2n+ 7<br> Terms:<br> Coefficients:<br> Constants:

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Answer:

Terms: 6m , -2n, 7

Coefficients: 6, -2

Constants: 7

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3 years ago

James surveyed people at school and asked whether they bring their lunch to school or buy their lunch at school more often. The

Brrunno [24]

Answer:

The correct option is 4.

Step-by-step explanation:

Given information:

Bring lunch : 46 males, 254 females

Buy lunch : 176 males, 264 females

Total number of peoples is

$46+254+176+264=740$

Total number of males is

$46+176=222$

The probability of male is

$P(Male)=\frac{Males}{Total}=\frac{222}{740} =0.3$

Since probability of males is 0.3, therefore options A and C are incorrect.

Total number of persons who buys lunch is

$176+264=440$

The probability of persons who buys lunch is

$P(\text{Buys lunch})=\frac{\text{Buys lunch}}{Total}=\frac{440}{740} =\frac{22}{37}$

We need to find the probability of P(male | buys lunch).

According to the conditional probability, we get

$P(\frac{A}{B})=\frac{P(A\cap B)}{P(B)}$

P(male | buys lunch) $=\frac{P(\text{male }\cap \text{ buys lunch})}{P(\text{buys lunch})}$

P(male | buys lunch) $=\frac{\frac{176}{740}}{\frac{22}{37}}$

P(male | buys lunch) $=\frac{2}{5}=0.4$

Therefore the correct option is 4.

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3 years ago

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