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EastWind [94]
3 years ago
9

What is the formula for a counterclockwise rotation of 180°?!?!

Mathematics
2 answers:
Sloan [31]3 years ago
7 0

Answer: A (x,y) is your original. Your answer after would be A' (-x,-y) you would change the sign. If its negative it becomes positive, and if it'd positive it becomes negative.

siniylev [52]3 years ago
3 0

Answer: you change both signs to the opposite

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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4 0
2 years ago
Sally bought some candy bars for $1.25 each and some sodas for $1.49 each. If she bought a total of 38 items and spent $50.38 ho
hammer [34]

Answer:

26 candy bars and 12 sodas

Step-by-step explanation:

This problem can be solved by a simple system of equations

I am going to call x the number of candy bars that Sally bought and y the number of sodas that Sally bought.

The fact that she bought 38 itens means the x + y = 38.

She spent $50.38. The value she spent is the sum of the number of candy bars multplied by the value of the candy bar and the number of sodas multiplied by value of a soda. So 1.25x + 1.49y = 50.38

So we have to solve the following system:

1)x + y = 38

2)1.25x + 1.49y = 50.38

From 1), we have that x = 38 - y. I am going to replace it in 2)

1.25(38-y) + 1.49y = 50.38

-1.25y + 1.49y = 50.38 - 47.5

0.24y = 2.88

y = 12.

Sally bought 12 sodas.

In 1: x = 38-y = 38-12 = 26

Sally bourght 26 candy bars

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3 years ago
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A school debate team has 4 girls and 6 boys. A total of 3 of the team members will be chosen to participate in the district deba
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Answer:

I’m pretty sure the answer is A.

Hope this helps!

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2(2x + 7) = 2 + 2x<br>A. One Solution <br>B. No Solution <br>C. Infinite Solutions​
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tes

Step-by-step explanation:

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