3 years ago

Which property of equality does this represent 4(a+5)=4a+20

Mathematics

1 answer:

Orlov [11]3 years ago

7 0

Answer:

Addition property of equality

Step-by-step explanation:

anytime it has the + sign its addition

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Anna and Maya are competing in a dance tournament where dance moves are worth a certain number of points if a dance move it's do

Gre4nikov [31]

Anna's current number of points = 225 points.

She danced correctly and earned = 75 points.

And when she danced incorrectly she loses = 30 points.

Note: For dancing correctly earned points will be added and for dancing incorrectly loses points will be subtracted from the total points has in starting.

So, we can setup an expression as

Current points + earned points - loses points

Plugging values, we get

225 +75 -30 Required expression.

Adding 225 and 75, we get 300.

Therefore, 225 +75 -30 = 300-30.

Subtracting 30 from 300, we get

300-30=270.

Therefore, Anna's final score is 270 points.

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3 years ago

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3 years ago

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boyakko [2]

Subtraction property of equality
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2/3y × 3/2 = -6 × 3/2
multiplication property of equality
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3 years ago

Find a10 given the geometric sequence 3, 12, 48, 192, ...

notka56 [123]

Answer:

Step-by-step explanation:

first term = a = 3

common ratio = 2nd term ÷ first term

= 12 ÷ 3

r = 4

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