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2 years ago

Which situation below would represent a negative rate of change:

Mathematics

1 answer:

uranmaximum [27]2 years ago

3 0

Answer: John's situation

Step-by-step explanation:

Hi, to answer this question we have to write an equation for each situation.

John’s situation:

The amount of money that John has (y) is equal to his school account (40) minus the product of the number of days (x) and the amount he spends per day( 3)

y =40-3x

As days pass by, John has less money (negative rate of change)

Judy's situation

The amount of money that Judy has in her savings account (y) is equal to the product of the number of days (x) and the amount he saves per day (20/2)

y = x (20/2)

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3 years ago

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2 years ago

A baseball player had 4 hits in 8 games. At this rate, how many hits will the baseball player have in the next 28 games? 14 24 2

larisa86 [58]

Answer:

Step-by-step explanation:

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3 years ago

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A parking lot contains 100 cars , k of which happen to be lemons. we select m of these cars

Sunny_sXe [5.5K]

Given that a parking lot contains 100 cars, k of which happen to be lemons.

This is a conditional probability question.

Let event A be that a car is tested and event B be that a car is lemon.

The probability that a car is lemon is given by $\frac{k}{100}$

The probability that a car is tested is given by $\frac{m}{100}$

The probability that a car is lemon and it is tested is given by $\frac{n}{m}$

For a conditional probability, the probablility of event A given event B is given by:

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

Therefore, the probability that a car is lemon, given that it is tested is given by.

$P(lemon|tested)= \frac{P(lemon\, and\, tested)}{P(tested)} \\ \\ = \frac{ \frac{n}{m} }{ \frac{m}{100} } = \frac{n}{m} \times \frac{100}{m} = \frac{100n}{m^2}$

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3 years ago

What is this as answer to this problem 3(2x+2)=96

kap26 [50]

Answer:

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Step-by-step explanation:

distribute 3 into the () so it would be 6x+6=96. subtract 6 to 96= 90. 90 divide by 2=16

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3 years ago

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