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Jet001 [13]
3 years ago
6

Math come help plese

Mathematics
1 answer:
Ray Of Light [21]3 years ago
3 0

Answer:

74

Step-by-step explanation:

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Simplify the expression and then substitute the given number for the variable. For expression 8a2+6b+9a2+9b2+3b, find the value
Harlamova29_29 [7]

Answer: 68

Step-by-step explanation:

Simplifying the expression:

= 8a² + 6b + 9a² + 9b² + 3b

Collect like terms

= 8a² + 9a² + 6b + 3b + 9b²

= 17a² + 9b + 9b²

We then substitute a=2,b=−1.

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Marco’s mother told him that she would add 25% to his allowance if he had saved it all. What fraction is this?
Makovka662 [10]

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What annual rate of interest would you have to earn on an investment of $3500 to ensure receiving $273.00 interest after 1 year?
kogti [31]

To find the answer, we will have to find the percentage of $273 to $ 3500, and we can use the formula:

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In this case:

273/3500 x 100%

=39/500 x 100%

=7.8%

Therefore the annual interest rate would be 7.8%.

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Step-by-step explanation:

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