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Annette [7]
3 years ago
5

Nora's leaf collection consisted of 150 leaves by August. By december , her collection had grown to 177 leaves. How much did her

collection increase between August and December?
9%
12%
15%
18%
Mathematics
1 answer:
Elza [17]3 years ago
4 0
Answer=18%

177/150=1.18

1.18=118%

118%-100%=18%

___________________________
another way to solve the equation...

  150     177
_____=_____
100%      x

Cross Multiply
150x=17700
divide both sides by 150
x=118%

118%-100%=18%
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2 years ago
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Advocard [28]

The minimum of a quadratic function, with a positive coefficient a, is its vertex.

Let's find the x₀ coordinate.

f(x) = 5x^2 -70x + 258\\\\x_0=\dfrac{-b}{2a}=\frac{-(-70)}{2*5}  =\frac{70}{10} =7

Now we need to find y₀ coordinate. That will be the minimum of function.

y_0=5\times7^2-70\times7+258=13

So, the minimum cost to produce the product is $13

Decompose 5x^2 − 70x + 258 into multipliers

5x^2 - 70x + 258=(5x^2-70x+245)+13=5(x^2-14+49)+13=\\=5(x-7)^2+13

Answer: 5(x − 7)^2 + 13; The minimum cost to produce the product is $13.

4 0
3 years ago
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