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professor190 [17]
3 years ago
9

The coordinates of ΔABC are (-3, 4), (0, 4), and (2, 5). The coordinates of ΔA'B'C' are (-1.5, 2), (0, 2) and (1, 2.5). How do y

ou know that the transformation is a dilation? A) The coordinates of ΔABC have been multiplied by a scale factor of 0.5. B) The coordinates of ΔABC have been multiplied by a scale factor of 2. C) The signs of the coordinates of ΔABC have remained the same. D) The coordinates of ΔABC have been divided by 1 2 .
Mathematics
1 answer:
Korvikt [17]3 years ago
8 0
Answer: Choice A
The coordinates of triangle ABC have been multiplied by a scale factor of 0.5

In other words, the coordinates have been cut in half or they divided each coordinate value over 2
eg: (-3,4) --> (-1.5, 2)
since -3/2 = -1.5 and 4/2 = 2

The resulting figure is smaller. Specifically the linear dimensions are half that as the original.

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Help please, and explain.
Korvikt [17]

Answer: 2x + y

<u>Step-by-step explanation:</u>

logₐ(3) = x

logₐ(5) = y

logₐ(45) = logₐ(3²· 5)

             = logₐ(3)² + logₐ(5)

             = 2 logₐ(3) + logₐ(5)

             = 2     x      +   y        <em>substituted given values (stated above)</em>


4 0
4 years ago
Read 2 more answers
Look at photo for question. Do number 3 A-D?​
Digiron [165]

Answer:

A: 6, 12, 18, 24, 30

10, 20, 30, 40

B: 30

C: 5/6= 25/30 and 7/10= 21/30

D: 25/30>21/30 so 5/6>7/10

8 0
3 years ago
Suppose the population of all public universities shows the annual parking fee per student is $110, with a standard deviation of
vampirchik [111]
The probability would be 0.9738.

We first find the z-score for each end of this interval:

z = (x-μ)/(σ/√n) = (100-110)/(18/√49) = -10/(18/7) = -3.89

z = (x-μ)/(σ/√n) = (115-110)/(18/√49) = 5/(18/7) = 1.94

Using a z-table (http://www.z-table.com) we see that the probability that a score is less than the first z-score is 0.  The probability under the curve to the left of, less than, the second z-score is 0.9738.  Subtracting these we find the area between them:
0.9738 - 0 = 0.9738.
3 0
3 years ago
Select the adjective(s) in the following sentence.
horsena [70]
Answer: Clean

Explanation:
Adjectives are words that describes nouns. Therefore, clean is an adjective.
5 0
3 years ago
In Ms. Dole's class, students received grades of 87, 72, 99, 93, and 84 on yesterday's quiz. What was the mean of the quiz grade
Naddika [18.5K]
Hello!

The mean is the average of the numbers

To find the average you add them all up and divide the sum by the amount of numbers added

87 + 72 + 99 + 93 + 84 = 435

Divide the sum by the amount of numbers added

435 / 5 = 87

The answer is 87

Hope this helps!
4 0
3 years ago
Read 2 more answers
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