8.a)
A= (1,1) A’= (3,3)
B= (4,6) B’= (12,18)
C= (6,1). C= (18,3)

8b.)

A= (1,1) A’(0,5,0.5)

B= (4,6) B(2,3)

C= (6,1). C(3,0.5)

Hope this helped ! :)

8 0

3 years ago

Determine the product of the following expressions

Elanso [62]

Answer:

1. x^3+27y^3

2. 10a^3+17a^2b+11ab^2+12b^3

Step-by-step explanation:

6 0

3 years ago

The working lifetime, in years, of a particular model of bread maker is normally distributed with mean 10 and variance 4. Calcul

Nadya [2.5K]

Answer:

The 12th percentile of the working lifetime is 7.65 years.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean $\mu$ and standard deviation(which is the square root of the variance) $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

$\mu = 10, \sigma = \sqrt{4} = 2$