Answer:
B i think
Step-by-step explanation:
Answer:
Step-by-step explanation:
A) Use the distributive property to eliminate parentheses. Then combine like terms. (The only "like terms" are the constants.)
... = 12 +3·2y +3·(-3) . . . use the distributive property to multiply each term in parentheses by the factor 3 outside those parentheses
... = 12 +6y -9 . . . . . . . . simplify
... = 6y + (12 -9) . . . . . . group like terms together
... = 6y + 3 . . . . . . . . . . simplify
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B) Look for factors of each term that are also found in the other term.
... 18b has factors 3×6×b
... 12 has factors 2×6
The only common factor is 6, so we factor that out using the distributive property.
... 18b -12 = 6(3b -2)
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<em>Comment on factoring</em>
For factoring problems, it helps immensely if you know your times tables and some of the rules for divisibility. (Even numbers are divisible by 2, numbers ending in 0 or 5 are divisible by 5, numbers whose sum of digits is divisible by 3 are divisible by 3, for example.)
Answer:
42
Step-by-step explanation:
256 / 6 = 42.66666 since where only county full pots its 42
You divide the sum by the amount of values in the sample. For example, of the values 1, 2, 2 , 3, you'd divide 8/4.
Answer:
31 trees per acre will maximize the harvest
Step-by-step explanation:
Given
trees/acre
bushels
Required
Number of trees to maximize harvest
From the question, we understand that:
Yield will decrease by 4 i.e. 25 - 4x
For every additional tree planted, i.e. 55 + x
So, the function is:
Open bracket
Rewrite as:
The maximum of a quadratic function is calculated as:
In the above equation:
So:
Recall that the number of trees to be planted is: 55 + x
So, we have:
Approximate