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3 years ago

74.21 in written form

Mathematics

1 answer:

DENIUS [597]3 years ago

5 0

Seventy four and twenty-one hundredths.

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$\bf{1) \ x^4-61x^2+900=0 }$

Applying the factorization method, for example:

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$\bf{\\ &=(x+6)(x-6)(x+5)(x-5); }$

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Applying the factorization method:

$\bf{0&=(x^2)^2-25(x^2)+144=(x^2-16)(x^2-9) }$

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1 year ago

What is the y-intercept of the line shown?

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Step-by-step explanation:

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3 years ago

In the diagram below, what kind of line is BF relative to ABC?

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2 years ago

The yield of orange trees is reduced if they are planted too close together. If there are 30 trees per acre, each tree produces

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Answer:

5 more than 30 trees should be planted, for a total of 40 trees per acre.

Step-by-step explanation:

Let x be the number of trees beyond 30 that are planted on the acre

The number of oranges produced = Oranges(x) = (number of trees) (yield per tree)

We are given that For each additional tree in the acre, the yield is reduced by 7 oranges per tree

So, number of oranges produced = $(30 + x)(400 -10x)$

= $12000 -300x+400x-10x^2$

= $12000 + 100x-10x^2$

The derivative Oranges'(x) = 100-20x

Substitute first derivative equals to 0

$100-20x =0$

$x=5$

Using the second derivative test,

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20 is negative,

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Thus, 5 more than 30 trees should be planted, for a total of 40 trees per acre.

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3 years ago