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Lilit [14]
3 years ago
7

Find the multiplicative inverse of -9/2

Mathematics
1 answer:
uranmaximum [27]3 years ago
4 0

Answer:

-2/9

Step-by-step explanation:

When you multiply a number by its multiplicative inverse, you should get 1. So, the multiplicative inverse (or reciprocal) of -9/2 is 1/(-9/2) which is -2/9. You can get the answer by simply flipping the numerator and denominator.

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Two rectangles have integer dimensions, and both have a perimeter of 144 cm. what is the greatest possible difference between th
maria [59]
Maximum of area is when both length and width are equal
144/4=36  max area=36*36=1296
 minimum of area is when width is 1 and length is half of<span>  perimeter -1
</span> 144/2=72        72-1= 71  min area=71*1=71
1296-71=1225
8 0
3 years ago
Five percent of all blue ray players manufactured by a large electronics company are defective. A quality control inspector rand
iVinArrow [24]

Answer:

0.1354 = 13.54% probability that exactly one of these three blue ray players is defective.

Step-by-step explanation:

For each player, there are only two possible outcomes. Either it is defective, or it is not. The probability of a player being defective is independent of any other ray. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Five percent of all blue ray players manufactured by a large electronics company are defective.

This means that p = 0.05

A quality control inspector randomly selects three players from the production line.

This means that n = 3

What is the probability that exactly one of these three blue ray players is defective?

This is P(X = 1). So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 1) = C_{3,1}.(0.05)^{1}.(0.95)^{2} = 0.1354

0.1354 = 13.54% probability that exactly one of these three blue ray players is defective.

6 0
3 years ago
Solve this systems of equations<br> {y = 3x}<br> {x + y = 52}<br><br> WILL MARK BRAINLEST!!
r-ruslan [8.4K]

Answer:

x = 13

Step-by-step explanation:

x + y = 52

x + 3x =52

4x =52

x =52/4

x = 13

Hope this helps

Pls tell if any mistakes

6 0
3 years ago
Read 2 more answers
NEED HELP ASAP<br> Solve the equation or inequality for the unknown number. Show your work.
amid [387]

Answer:

5

Step-by-step explanation:

3(14+x) = 57

42 +3x = 57

3x = 15

x = 5

6 0
3 years ago
I need help please please
algol [13]

Answer:

A

Step-by-step explanation:

Rotates and then translates 7 to the left.

4 0
2 years ago
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