If x + 4y = 18 and x - 4y = 2, then x = ? My Answer:____

Mathematics

1 answer:

kupik [55]3 years ago

7 0

Answer:

Therefore x =5

Step-by-step explanation:

marke me as branalist answer

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Tyler believes that an 8-sided die can be used to predict whether customers at his store will use a coupon when making their pur

Alik [6]

"1 indicating a coupon and all other outcomes indicating no coupon"
Probability is (number of successful outcomes) / (number of possible outcomes)

Theoretical Probability of rolling a 1: 1/8

Experimental Probability of using coupons: 4/48 = 1/12

So, the experimental probability of a customer using a coupon (that is, 1/12) is smaller than the theoretical probability of rolling a 1 (that is, 1/8).

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2 years ago

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5 ( 3 squared x) + 9 ( 3 squared x)

yulyashka [42]

Answer:

42x^2

Step-by-step explanation:

$5(3x^{2} )+9(3x^2)\\\\=(5+9)(3x^2)\\\\=14(3x^2)\\\\=42x^2$

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2 years ago

If a sample of 362 customers is taken from a population of 5530 customers,

inysia [295]

Using concepts of sample and population, it is found that the sample variance is representative of 362 and 5530 customers ages, option D.

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In sampling, the information is taken from a sample, and is used to estimate it for the whole population.

In this problem, we have a sample of 362 and a population of 5530 customers.
The sample variance $s^2$ is calculated from the sample, and used as an estimate for the population variance. Thus, it can be said that it represents both 362 and 5530 customers, and the correct option is D.