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Pavlova-9 [17]
4 years ago
15

HELP PLEASE ASAP!!!!!!!! 10PTS

Mathematics
1 answer:
Georgia [21]4 years ago
6 0
A).  To go from ABCD to A'B'C'D' takes two transformations.

Step-1 :  Reflect the original figure around the x-axis.

Step-2 :  Slide the new figure 7 units to the right.

See the attached drawing.  It shows the whole process
including the intermediate status and coordinates of
the four points after Step-1.  You'll love it.

B).  I looked up a definition of 'congruent'.   It said that two figures 
are congruent if they have have the same shape and size after 
being moved, rotated, or reflected.  (I was worried about the 
'reflected' part.) 

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Twenty times one hundred and one (20 x 101)
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2020

Step-by-step explanation:

2020

4 0
3 years ago
PRACTICE ANOTHER The administration of a large university wants to take a random sample to measure student opinion of a new food
Reil [10]

Answer:

81 samples

Step-by-step explanation:

According to the empirical rule :

Possible values of the sample mean is within 3 standard deviations of the population mean :

μ ± 3 sd(x) ; sd(x) = standard deviation of sampling distribution.

3 * sd(x) = 1

sd(x) = 1/3

Recall:

Standard deviation of sampling distribution, sd(x)

sd(x) = σ / sqrt(n)

1/3 = 3 / sqrt(n)

Square both sides

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Cross multiply :

n * 1 = 9 * 9

n = 81

3 0
3 years ago
Suppose that a recent poll of American households about car ownership found that for households with a car, 39% owned a sedan, 3
Rama09 [41]

Answer:

The probability that of the 3 households randomly selected at least 1 owns a sports car is 0.1956.

Step-by-step explanation:

Let <em>X</em> = number of household owns a sports car.

The probability of <em>X</em> is, P (X) = p = 0.07.

Then the random variable <em>X</em> follows a Binomial distribution with <em>n</em> = 3 and <em>p</em> = 0.07.

The probability function of a binomial distribution is:

P(X=x) = {n\choose x}p^{x}[1-p]^{n-x}\\

Compute the probability that of the 3 households randomly selected at least 1 owns a sports car:

P(X\geq 1)=1-P(X

Thus, the probability that of the 3 households randomly selected at least 1 owns a sports car is 0.1956.

4 0
3 years ago
An item is regularly priced at $70. Keiko bought it on sale for 80% off the regular price. How much did Keiko pay? $
pantera1 [17]

Answer:

$14

Step-by-step explanation:

80% of $70 is $14, saving him $56

8 0
3 years ago
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HELP PLEASE! Thanks :)
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