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Galina-37 [17]
3 years ago
13

I need help also an explanation would be appriciated

Mathematics
2 answers:
givi [52]3 years ago
5 0
72 is the correct answer I think
inysia [295]3 years ago
4 0
72 is the right answer
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If quadrilateral RESP is is reflected across the line y = 2x +7 and again across the line y = -12x + 5, what will be the resulti
Musya8 [376]

The first reflection reverses the orientation and alters the direction of the vectors representing the sides of the quadrilateral. The second reflection does the same thing. The end result is that the orientation is unchanged by two reflections, and the direction of the sides of the quadrilateral is changed.

The appropriate choice is ...

... B. The resulting image will be a rotation of the pre-image.

_____

The center of rotation will be the point where the lines cross. (That is the invariant point.)

In the attachment, the green quadrilateral RESP is reflected across the line y=2x+7 (blue) to form the blue quadrilateral R'E'S'P'. That is then reflected across the line y = -12x +5 (orange) to give the orange quadrilateral R"E"S"P", which is a rotation of the pre-image.

The amount of rotation is double the angle between the lines, about 62.7°.

6 0
3 years ago
If f(20) = 7, what is the corresponding ordered pair?
Strike441 [17]

Answer:

4.5(10)

Step-by-step explanation:

because if you divide 7 by 2 you get 4.5 and then you divide 20 by 2 and get 10 that makes the answer correct!!! :)

6 0
2 years ago
Danielle can run one mile is 8.835 minutes. Alex can run one mile is 9.75 minutes. How much
skad [1K]

Answer:

Alex have to have 18.585 minutes to be running at the same amount of miles like daniella

Step-by-step explanation:

4 0
3 years ago
The total cost for a bucket of popcorn and 4 movie tickets is $56. The total cost for the same size bucket of popcorn and 6 movi
timurjin [86]

Answer:

y = 12x + 8

Step-by-step explanation:

56 - 8 = 48

48/12 is possible therefore its 1

5 0
3 years ago
2. Following are the marks obtained by a batch of 10 students in a
timurjin [86]

Answer:

Students level of knowledge is higher in accountancy  (Y) compared to statistics (X).

Step-by-step explanation:

The level of knowledge of the students in each subject can be known by comparing the mean score of the subjects.

Marks of the students in statistics (X) are: 63 64 62 32 30 60 47 46 35 28

mean = \frac{63 +64+62+32+30+60+47+46+35+28}{10}

          = \frac{467}{10}

          = 46.7

The mean mark of students in statistics (X) is 46.7.

Marks of students in accountancy (Y) are: 68 66 35 42 26 85 44 80 33 72

mean = \frac{68+66+35+42+26+85+44+80+33+72}{10}

         = \frac{551}{10}

         = 55.1

The mean mark of students in accountancy (Y) is 55.1.

It can be inferred that students level of knowledge is higher in accountancy  (Y) compared to statistics (X).

8 0
3 years ago
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