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3 years ago

Can someome please help me solve this my teacher hasn't done a good with teaching us this.

Mathematics

1 answer:

scoundrel [369]3 years ago

5 0

Answer:

30500 = 3.05·10^4

Step-by-step explanation:

Your calculator can do this for you. You may need to set the display to scientific notation, if that's the form of the answer you want.

This can be computed by converting both numbers to standard form:

(5·10^2) +(3·10^4)

= 500 +30000 = 30500 = 3.05·10^4

Addition of numbers in scientific notation in general requires that they have the same power of 10. It may be convenient to convert both numbers to the highest power of 10.

5·10^2 + 3·10^4

= 0.05·10^4 +3·10^4 . . . . now both have multipliers of 10^4

= (0.05 +3)·10^4

= 3.05·10^4

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Vikentia [17]

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Step-by-step explanation:

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3 years ago

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The selling price of the Robertsons family house dropped from $500,000 to $250,000. What was the percent decrease in the value o

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Answer:

50%

Step-by-step explanation:

You can literally do it mentally lol

$500,000

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2 years ago

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Find two consecutive odd integers such that 32 more than the lesser is three times the greater

Maslowich

Answer:

First odd number = 13

Second odd number = 15

Step-by-step explanation:

Let

First odd number = 2x + 1

Second odd number = 2x + 3

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32 + 2x + 1= 3 (2x + 3)

33 + 2x = 6x + 9

Taking terms with x to left and constants to right

2x - 6x = 9 - 33 (sign of transferred terms will be changed)

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3 years ago

Find the y-intercept of the line: 2x + 4y = 8

romanna [79]

Answer:

(4, 0)

Step-by-step explanation:

2x + 4y = 8

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2 years ago

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Answer:

Step-by-step explanation:

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