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schepotkina [342]
3 years ago
11

What method would you choose to solve the equation 2x^2-7=9? Explain why you chose this method

Mathematics
1 answer:
emmasim [6.3K]3 years ago
4 0

Answer:

PEMDAS

Step-by-step explanation:

parenthesis, exponents,multiplication,division,additon,substraction, these are the steps in order to follow when solving equations.

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The angle of rotation at which point A’ coincidences point
anygoal [31]

Answer:

216 degrees

Step-by-step explanation:

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Since regular pentagon rotation will not disturb the shape.

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For another 108 degrees A would come to D

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8 0
3 years ago
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Lerok [7]

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IrinaK [193]

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3 0
3 years ago
Jack had 4 hours of school. He spent 45 minutes in the library and 12 hour on a science lecture and had a lunch break of 25 minu
andre [41]

Answer:

\dfrac{10}{4} \ hour

Step-by-step explanation:

Given that :

Jack had 4 hours of school.

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had a lunch break of 25 minutes

The objective is to determine how much time is left for the school to get over and we are to write the answer as a fraction.

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we all know that; 60 minutes = 1 hour.

Then,

45 minutes = (45/60)hour = 3/4 hour

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Therefore, the amount of time left  for the school to get over is:

= 4 - (\dfrac{3}{4}+\dfrac{1}{2}+ \dfrac{1}{4})

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= \dfrac{16-6}{4}

= \dfrac{10}{4} \ hour

7 0
3 years ago
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