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Taya2010 [7]
3 years ago
7

Jada says “I know 4 nickels and 7 dollar coins weigh 76.7 grams. I know 4 nickels and 5 dollar coins weigh 60.5 grams. Here’s wh

at else I can figure out based on that: 2 dollar coins weigh 16.2 grams. How did jada figure out that 2 dollar coins weigh 11 grams?
Mathematics
1 answer:
Ilya [14]3 years ago
8 0

Answer:

im from the uk what are nickles and dimes

Step-by-step explanation:

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2 years ago
The cost to produce a product is modeled by the function f(x) = 5x^2 − 70x + 258, where x is the number of products produced. Co
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.

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3 years ago
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Varvara68 [4.7K]
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klasskru [66]

Answer:

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Step-by-step explanation:

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