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3 years ago

7x - 4y = -5 ordered pair

Mathematics

1 answer:

Roman55 [17]3 years ago

3 0

Answer:

Step-by-step explanation:

You may invent a value for x, substitute that value into the given equation and thereby calculate y:

If 7x - 4y = -5 and x = 0, then -4y = -5 and y = 5/4. The corresponding ordered pair is (0, 5/4). Other x values may be chosen at random and the same operations performed so as to find other possible ordered pairs corresponding to 7x -4y = 5.

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3 years ago

(4r^6 + 2r^5 - 8r^4) ÷ r^4

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The solution is $2(2r^2+r-4)$

Explanation:

The given expression is $\frac{4r^6+2r^5-8r^4}{r^4}$

We need to determine the solution of the given expression.

The solution of the expression can be determined by dividing the terms.

Thus, we have,

$\frac{4r^6+2r^5-8r^4}{r^4}$

Let us factor out the common term $2r^4$ from the numerator.

Thus, we get,

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3 years ago

A company estimates that 0.7% of their products will fail after the original warranty period but within 2 years of the purchase,

8_murik_8 [283]

Answer:

$44.90

Step-by-step explanation:

The resulting value for the company of replacing a failed product is given by the price of the warranty minus the cost of replacement:

$F= \$47-\$300 =-\$253$

This event has a 0.7% chance of happening.

The resulting value for selling extended warranty to a product that does not fail is given by the proce of the warranty:

$W= \$47$

This event has a 99.3% chance of happening.

The expected value is:

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The expected value for each warranty sold is $44.90.

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4 years ago

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