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KonstantinChe [14]
3 years ago
12

Someone pls help me ill give out brainliest pls don’t answer if you don’t know

Mathematics
1 answer:
Artyom0805 [142]3 years ago
4 0

Answer:

240 percent

Step-by-step explanation:

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Use properties of equality to simplify each of the following expressions so that you can simplify them in your head. Identify th
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Properties of equality have nothing to do with it. The associative and commutative properties of multiplication are used (along with the distributive property and the fact of arithmetic: 9 = 10 - 1).

All of these problems make use of the strategy, "look at what you have before you start work."


1. = (4·5)·(-3) = 20·(-3) = -60 . . . . if you know factors of 60, you can do this any way you like. It is convenient to ignore the sign until the final result.

2. = (2.25·4)·23 = 9·23 = 23·10 -23 = 230 -23 = 207 . . . . multiplication by 4 can clear the fraction in 2 1/4, so we choose to do that first. Multiplication by 9 can be done with a subtraction that is often easier than using ×9 facts.

4. = (2·5)·12·(-1) = 10·12·(-1) = (-1)·120 = -120 . . . . multiplying by 10 is about the easiest, so it is convenient to identify the factors of 10 and use them first. Again, it is convenient to ignore the sign until the end.

5. = 0 . . . . when a factor is zero, the product is zero
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3 years ago
Nadia is a stockbroker. She earns 13​% commission each week. Last​ week, she sold ​$4,500 worth of stocks. How much did she make
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4500 x 0.13 = 585

She made $585 last week.

Multiply amount made in 1 week by 52 weeks ( 1 year = 52 weeks)

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She made $30,420 in 2011

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3 years ago
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Answer:

the answer is b and i need atleast twenty words so it is asa because the middle and side and the right angle

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Simplify the following expression:
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3x-8y+40z

Step-by-step explanation:

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1. =2

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