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Fittoniya [83]
4 years ago
14

Find the simplified form of the expression. Give your answer in scientific notation.

Mathematics
1 answer:
kari74 [83]4 years ago
7 0

Answer:

1.8 x 10^{13}

Step-by-step explanation:

The expression is [3x10^6][6x10^8} ]

Step 1: Multiply the coefficients 3 and 6, we get 18.

Step 2: If we have the same base, we add the powers.

So 10^6 *10^8 = 10^(6 + 8) = 10^{12}

Step 3: Now combine 18 and 10^{12}

= 18 x 10^{12}

The coefficient must be less than 10, in 18, we have one 10, we can move that to the exponent and 18 = 1.8 *10

Step 4: When we simplify, we get 1.8 x 10^{13}

Hope you will understand the steps.

Thank you.

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Two welders worked a total of 46 h on a project. One welder made $34/h, while the other made $39/h. If the gross earnings of the
Ratling [72]

Answer:

25 and 21 hours respectively

Step-by-step explanation:

Let the number of hours worked by each welder be x and y respectively.

They worked a total of 46 hours. This means :

x + y = 46 hours.......(I)

Now, given their hourly charges, since we have the total amount of money realized, we can make an equation out of it. This means:

34x + 39y = 1669........(ii)

We then solve both simultaneously. From I, x = 46 -y

We can substitute this into ii

34(46 -y) + 39y = 1669

1564 -34y + 39y = 1669

5y = 1669 - 1564

5y = 105

y = 105/5 = 21

x = 46 - y

x = 46 - 21 = 25 hours

The numbers of hours worked by the welders are 25 and 21 respectively

4 0
3 years ago
What is 9 times 3 fourths ?
Elena L [17]
9 * 3/4 = 6.75

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4 0
3 years ago
Two angles in a triangle have measures of 18 and 77º.<br> What is the measure of the third angle
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Answer:

85 ° is the answer to the question

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3 years ago
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How does 1/12 - 5/6 = 9/12 um tring to learn how to add this like ?
tekilochka [14]

Answer:

see below

Step-by-step explanation:

1/12 - 5/6 = -9/12

We need to get a common denominator of 12

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1/12 - 10/12 = -9/12

Since the denominators are the same, we can subtract the numerators

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We can simplify -9/12 by dividing the top and bottom by 3

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Answer:

$468

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