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Shalnov
18 days ago
13

Find a matrix representation of the transformation L(x, y) = (3x + 4y, x − 2y).

Mathematics
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The total height of the Statue of Liberty and its pedestal is 153 feet more than the height of the statue. Write and solve an eq
Svet_ta [12734]
The statue's height is 152 feet. To answer this question: The total height of the Statue of Liberty alongside its pedestal is 305 feet, which is 153 feet more than the statue’s height. You can derive the height h of the statue using the formula.
7 0
2 months ago
A journalist wants to determine the average annual salary of CEOs in the S&P 1,500. He does not have time to survey all 1,50
Inessa [12570]

Answer:

At least 315

Step-by-step explanation:

A journalist intends to find the average annual salary of CEOs within the S&P 1,500. Due to time constraints, a sample is used.

Standard deviation of the sample (s) = 449300

Sample size = n

Permissible margin of error = 50000

Z critical value = 1.96

Thus, 1.96 times the standard error equals 50000.

Standard error equals 25510.20

Standard deviation divided by the square root of n = 25510.20

By simplifying, we can derive:

\sqrt{n} =\frac{449300}{25510.20} =17.752\\n=315\\

Thus, the minimum sample size required is 315.

8 0
4 months ago
The average height of a class of 18 students is 105 cm After arrival of 7 new students the
Svet_ta [12734]

Total students enrolled = 18 + 7 = 25

Mean height of these 25 students = 105 - 5 = 100 cm


Total height of all students combined = 100 x 25 = 2500cm


Final answer: 2500cm

3 0
2 months ago
Which composition of similarity transformations maps polygon ABCD to polygon A'B'C'D'?
PIT_PIT [12445]

Answer:

A scale transformation that contracts and is subsequently followed by a reflection.

Step-by-step explanation:

A contraction with a scale factor less than 1, followed by a reflection, constitutes the combination of similarity transformations that maps polygon ABCD to polygon A'B'C'D.

4 0
4 months ago
Read 2 more answers
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