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padilas [110]
3 years ago
7

Round to the merest hundredth389.993

Mathematics
1 answer:
kvasek [131]3 years ago
3 0
What's a hundredth?

it's like this:

0.01

so where is the hundred place in this number?

389.9<em>9</em>3

it's the 9 that i made boldface

so to round to this number we delete everything after it, asking ourselves if the number after it is 4 or less? yes! so we can just delete it without changing anyway


389.99

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Maya spent 40% of her savings on a bike it cost her $85 how much money does she have left
shusha [124]
Let be Z the money ;
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Will give BRAINLEST :)
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Answer:

A

Step-by-step explanation:

This explanation mostly depends on what you're learning right now. The first way would be to convert this matrix to a system of equations like this.

g + t + k = 90

g + 2t - k = 55

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Then you solve using normal methods of substitution or elimination. It seems to me that elimination is the quickest method.

g + t + k = 90

-g - t + 3k = 30

____________

0 + 0 + 4k = 120

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No you can plug this into the first two equations

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now use elimination again by multiplying the first equation by -1

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_________

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Now plug those both back into one of the equations. I'll just do the first one.

g + (25) + (30) = 90

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Therefore, we know that Ted spent the least amount of time on the computer.

The second method is using matrix reduction and getting the matrix in the row echelon form, therefore solving using the gauss jordan method. If you would like me to go through this instead, please leave a comment.

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Which expression is eqivalent to 9a +12
koban [17]

3(3a + 4)

this the anwers

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3 years ago
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