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Marianna [84]
1 year ago
8

If A= [2 6] prove that (A')' = A 3 7 4 9​

Mathematics
1 answer:
Ivanshal [37]1 year ago
3 0

Answer:if A= [2 6] prove that (A')' = A

3 7

4 9​

Step-by-step explanation:

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Marco wants to buy a game for $59.99. The sales tax is 7%. How much will he pay for the sales tax?
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$4.19

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8 0
3 years ago
X–2 1/2=6 3/4. X=?<br><br> x – 3.23 = 0.77. X=?
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Answer:

x= 105/4

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Step-by-step explanation:

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Here is the work:
(13x - 5x) + 12 - 2y = 6
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3 years ago
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Need help don’t understand the step equation on how to do this
pishuonlain [190]

Answer:

x + y = 125

3.50x + 2.25y = 347.50

53 rolls

Step-by-step explanation:

System of equations

so basically if we say that rolls are represented by x and wrapping paper is represented by y, we can say x plus y is 125 because there are a total of 125 rolls and packages. if each roll is 3.50 and each package is 2.25, we can just put each number in front of the corresponding variable to show that each one is worth that amount, and they total to 347.50. then you have to solve the system of equations. so if you solve for x in the first equation, x = 125 - y. so plug that in to the next equation, 3.50(125 - y) + 2.25y = 347.50. solve for y and you get 72.

but y is the number of packages, and we want the number of rolls. there are 125 rolls and packages, so 125 minus the 72 packages and you get 53 rolls

5 0
3 years ago
a bread recipe calls for ⅓ cup of butter you want to make ½ of a batch. how much butter do you need?​
Reil [10]

Answer:

1/6

Step-by-step explanation:

if 1/3 is for a whole batch and you want to make a half batch. So, divide 1/3 by 2.

4 0
3 years ago
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