4 students spent $12 on School lunch at this rate find the amount 10 students would spend on the same school lunch

Mathematics

1 answer:

Vedmedyk [2.9K]2 years ago

7 0

10 students would pay $30

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Simplify completely (x^2+x-12)/(x^2-x-20)÷(3x^2-24+45)/(12x^2-48x-60)

likoan [24]

To simplify the expression, we can check if there are terms that are needed to be added or subtracted. In this case, there are none. We get the factors of 4 equations present in the expression.
x^2+x-12 = {3,-4}
x^2-x-20 = {5,-4}
3x^2-24+45 = {5,3}
12x^2-48x-60 = {5,-1}

hence we cancel 5 and from numerator and denominator.

the answer is (x+4)^2/ (x-5)*(x+1)

6 0

3 years ago

Global Airlines operates two types of jet planes: jumbo and ordinary. On jumbo jets, 25% of the passengers are on business while

MArishka [77]

Answer:

The probability is $P(J|B) = 0.36$

Step-by-step explanation:

B =business

J=jumbo

Or =ordinary

From the question we are told that

The proportion of the passenger on business in the ordinary jet is $P(B| Or) = 0.25$

The proportion of the passenger on business in the jumbo jet is $P(B|J) = 0.30$

The proportion of the passenger on jumbo jets is $P(j) = 0.40$

The proportion of the passenger on ordinary jets is evaluated as

$1 - P(J) = 1- 0.40 = 0.60$

According to Bayer's theorem the probability a randomly chosen business customer flying with Global is on a jumbo jet is mathematically represented as

$P(J|B) = \frac{P(J) * P(B|J)}{P(J ) * P(B|J) + P(Or ) * P(B|Or)}$