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Kaylis [27]
3 years ago
13

How to rewrite an expressions with negative exponents so that the exponent is positive?

Mathematics
1 answer:
Nuetrik [128]3 years ago
5 0
A^(-b) = 1 / (a^b)

examples : 4^(-3) = 1 / (4^3) = 1 / 64

2 + 4^(-2) = 2 + 1/(4^2) = 2 + 1/16 = 2 1/16

3 * 2^(-2) = 3 * 1 / (2^2) = 3 * 1/4 = 3/4
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Joyce paid $220 for an item at the store that was 35 percent of the original price. What was the original price?
allochka39001 [22]

Answer:

The original price of item was $ 628.57

Step-by-step explanation:

Given as :

The amount paid fro an item = $ 220

And The paid amount was 35 % of the original price

Let The original price be x

So, According to question ,

35% of original price = $ 220

Or, 35% of x = $ 220

Or,    x = \frac{220\times 100}{35}

Or,    x = $ 628.57

Hence The original price of item was $ 628.57    Answer

8 0
3 years ago
Which expression can be used to find the retail price of an item that was bought at wholesale for $112 and sold at a 40% markup?
umka2103 [35]
D. $112 + 0.40($112) is the answer

The wholesale price = $112
Markup percentage = 40% or 0.40
So, the expression that will give the retail price of the item = 112 + 0.40 (112)
Retail price = purchase/wholesale price plus markup
7 0
2 years ago
Read 2 more answers
Which lines are parallel? Why?
Shtirlitz [24]

9514 1404 393

Answer:

  C) c || d by converse of corresponding angles

Step-by-step explanation:

Only corresponding angles where transversal b crosses lines c and d are shown. All answer choices involving a||b or interior angles can be eliminated from consideration.

The "corresponding angle" theorem tells you corresponding angles are congruent if the lines are parallel.

The converse of that theorem tells you the lines are parallel if the corresponding angles are congruent. Here, the angles are shown congruent, so the "converse" theorem applies.

8 0
3 years ago
Please help me, thank you
Natali5045456 [20]

Answer:

161 6/72

Step-by-step explanation:

50 5/8 plus 50 5/8 = 100 10/8 = 101 2/8

30 2/9 + 30 2/9 = 60 4/9

add them together which comes out to 161 6/?

Use LCM or least common multipule and it should come out to 161 6/72

5 0
3 years ago
Read 2 more answers
HELP THIS IS DUE AT 1:30
love history [14]

Answer: The Ming Dynasty contributed significantly to the fields of culture, science, and technology. Moreover, textiles and mining industries also flourished during this time. Towards the end of the Ming Dynasty, a capitalist production system was gradually developing. The Ming Dynasty achievements resulted in many entrepreneurs readily seizing economic development opportunities building the great wall. One of the most significant Ming Dynasty achievements in engineering is the completion and repair of the Great Wall. Ming, The restoration of the Grand Canal was also an important achievement of this era. A wide range of machinery and equipment from which silk and cotton looms were made were invented during this era.  Dynasty achievements also included significant contributions in the fields of philosophy, art, and literature. The Forbidden City, Beijing, was an essential architectural achievement that was also constructed during this era.

The famous white and blue porcelain of China originated in the era of the Ming Dynasty.

Step-by-step explanation: hoped this helped :)

3 0
3 years ago
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