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OLga [1]
3 years ago
12

Which expression has a negative value?

Mathematics
2 answers:
cupoosta [38]3 years ago
8 0

Answer: - 35 divided by 5

Step-by-step explanation:

katen-ka-za [31]3 years ago
4 0

Answer:

Negative 35 divided by 5.

Step-by-step explanation:

I got this answer by using process of elimination. So let's try it shall we?

2+12

This has to positive numbers in the process of addition so this would be a positive number with the answer of 14.

-3 x -8

This equation has two negatives being multiplied by each other hence cancelling each other out so the answer would be positive.

10 - (-18)

Much like the last equation there are to negatives, but this equation is subtracting by a negative so the negatives next to each other in that way would cancel each other out leaving you with a positive 28.

-35 / 5

Seeing as we have checked every other equation this one must be negative but lets check. When you divide a negative by a positive the positive would automatically take the form of the negative number, because it does not have a negative of its own to cancel the negative out so this must have a negative outcome.

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A home gardener estimates that 18 apple trees will produce an average yield of 80 apples per tree. But because of the size of th
aliina [53]

19 trees should be planted to maximize the total

<h3>How many trees should be planted to maximize the total</h3>

From the question, we have the following parameters:

Number of apples, x = 18

Yield, f(x) = 80 per tree

When the number of apple trees is increased (say by x).

We have:

Trees = 18 + x

The yield decreases by four apples per tree.

So, we have

Yield = 80 - 4x

So, the profit function is

P(x) = Apples * Yield

This gives

P(x) = (18 + x) *(80 - 4x)

Expand the bracket

P(x) = 1440 - 72x + 80x - 4x^2

Differentiate the function

P'(x) = 0 - 72 + 80 - 8x

Evaluate the like terms

P'(x) = 8 - 8x

Set P'(x) to 0

8 - 8x = 0

Divide through by 8

1 - x = 0

Solve for x

x = 1

Recall that:

Trees = 18 + x

So, we have

Trees = 18 + 1

Evaluate

Trees = 19

Hence, 19 trees should be planted to maximize the total

Read more about quadratic functions at:

brainly.com/question/12120831

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4 0
1 year ago
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Solve the equation for all values of x in simplest form:<br> (x - 2)2 = 49
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