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Ede4ka [16]
3 years ago
15

3^6/3^_ = 3^4 what is the missing value?

Mathematics
1 answer:
Strike441 [17]3 years ago
8 0
\frac{a^b}{a^c} =a^{b-c}

\frac{3^6}{3^x} =3^4\\\\3^{6-x}=3^4\\6-x=4\\-x =-2\\\\x=2
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What is the answer for 2 3/7 + 3 2/7 in a mixed fraction
S_A_V [24]

Answer: 5 5/7

Step-by-step explanation:

3+2 = 5

You then look at you fractions. They both have the same denominator so we go ahead and add the two together.

3/7 + 2/7 = 5/7

Your final answer is 5 5/7

5 0
3 years ago
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The price of a four-year dinner was $100 two decades ago. A report says that a dinner is 250% of what it was 20 years ago, how m
Leviafan [203]

The original price of a shirt was $20. It was decreased to $15 . What is the percent decrease of the price of this shirt.


Solution to Problem 1:


The absolute decrease is


20 - 15 = $5


The percent decrease is the absolute decrease divided by the the original price (part/whole).


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Multiply and divide 0.25 to obtain percent.


percent decease = 0.25 = 0.25 * 100 / 100 = 25 / 100 = 25%


Problem 2:


Mary has a monthly salary of $1200. She spends $280 per month on food. What percent of her monthly salary does she spend on food?


Solution to Problem 2:


The part of her salary that is spent on food is $280 out of her monthly salary of $1200


percent = part / whole = 280 / 1200 = 0.23 (rounded to 2 decimal places)


Multiply and divide 0.23 by 100 to convert in percent


percent = 0.23 * 100 / 100 = 23 / 100 = 23%


Problem 3:


The price of a pair of trousers was decreased by 22% to $30. What was the original price of the trousers?


Solution to Problem 3:


Let x be the original price and y be the absolute decrease. If the price was decreased to $30, then


x - y = 30


y is given by


y = 22% of x = (22 / 100) * x = 0.22 x


Substitute y by 0.22 x in the equation x - y = 30 and solve for x which the original price.


x - 0.22 x = 30


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x = $38.5


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Problem 4:


The price of an item changed from $120 to $100. Then later the price decreased again from $100 to $80. Which of the two decreases was larger in percentage term?


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First decrease in percent


part / whole = (120 - 100) / 120 = 0.17 = 17%


Second decrease in percent


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gave number of questions

same conccepttttt

thanxxxxx

5 0
3 years ago
Find the difference.<br>(2n - 9) - 5(-2.4n + 4) =​
MArishka [77]

Answer:

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3 years ago
In the figure below, lines w and z are parallel. What is the value of x
Mkey [24]

Answer:

<em>x° = 42°</em>

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7 0
2 years ago
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saul85 [17]
You do 48 divide by 6 to determine x which is X = 8
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2 years ago
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