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3 years ago

If x = -12, y = -3; find xy?

Mathematics

2 answers:

Aleksandr-060686 [28]3 years ago

4 0

Answer:

Step-by-step explanation:

To find xy, multiply x and y

(-12)(-3) = 36

xy = 36

wolverine [178]3 years ago

3 0

Given that :- 

x = -12
y = -3

To Find :- 

Value of xy

Solution :- 

☆ When a negative digit is multiplied with negative digit then the result comes as positive digit .

→ x × y = (-12)(-3)

→ x.y = 36

So the answer is 36.

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Two containers hold several balls. Once a second, one of the balls is chosen at random and switched to the other container. Afte

natka813 [3]

Answer:

(a) 8 balls

(b) 4 balls

Step-by-step explanation:

Let

$N \to$ Number of balls

For a box, the probability that there are N balls in it is:

$Pr = 0.5^N$

For 2 boxes, it is:

$Pr = 2 * 0.5^N$

From the question, we have:

$\frac{80}{10000} \to$ Favorable outcome

To solve for N, we have:

$2 * 0.5^N = \frac{80}{10000}$

$2 * 0.5^N = 0.008$

Divide both sides by 2

$0.5^N = 0.004$

Take log of both sides

$\log(0.5^N) = \log(0.004)$

Apply law of logarithm

$N\log(0.5) = \log(0.004)$

Make N the subject

$N = \frac{\log(0.004)}{\log(0.5)}$

$N =7.966$

Approximate

$N = 8$

Solving (b): Balls in one of the two boxes.

Here, we assume that each ball will have almost the same number of balls at a given instance;

Hence, we have:

$Balls \approx \frac{N}{2}$

$Balls \approx \frac{8}{2}$

$Balls \approx 4$

4 balls in each box

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3 years ago

Ive been stuck on this expression for a while now

natka813 [3]

Answer:

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Step-by-step explanation:

i hope that helps you :)

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igomit [66]

Answer:

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Step-by-step explanation:

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3 years ago

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Zielflug [23.3K]

Answer:

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Step-by-step explanation:

I'm going to assume that this is a circle since you didn't give it to me

So you want to add 164 and 90 together and subtract the sum by 360

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So you want to use PEMDAS (order of operations) to solve this

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3 years ago

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Olegator [25]

Answer:

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Step-by-step explanation:

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3 years ago

If x = -12, y = -3; find xy?​

If x = -12, y = -3; find xy?