460 is your answer
20 x 23 = 460
(-2.9a + 6.8) + (4.4a - 7.3)
= -2.9a + 6.8 + 4.4a - 7.3
Combine like terms. All "a" terms can only be added to other "a" terms, and all non variable terms can only be added to other non variable terms.
= 1.5a - 0.5
Final Answer: D. 1.5a - 0.5
The percentage value of puppies weighing over 6 pounds is 25%
What is Percentage?
Percentage is a relative number that represents the hundredth part of any quantity. One percent (symbolised 1%) is one hundredth part; consequently, 100 percent denotes the complete amount and 200 percent defines twice the supplied amount.
Solution:
Given that there are 12 puppies in total and 3 of them weighted above 6 pounds
To calculate the percentage we need to divide 3 by 12 and then multiply it by 100
= (3/12) * 100
= 25%
To learn more about <u>Percentage</u> from the given link
brainly.com/question/843074
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