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Aleks04 [339]
3 years ago
7

What are the possible rational zeros of f(x) = x^4 + 6x^3 − 3x^2 + 17x − 15?

Mathematics
1 answer:
loris [4]3 years ago
8 0
Hmm, I got these for roots:
0.7937053103356799
0.026855090968934903   +i* 1.6611004538114105
0.026855090968934903   -i* 1.6611004538114105
-6.84741549227355

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A square pyramid has a height of 25 ft and each side of the base has a length of 15 ft.
Naya [18.7K]

Answer:

Surface area of square pyramid is computed as follows:

A = a² + a*√(a² + 4h²)

where <em>a</em> is the base length and <em>h</em> is the height.

If a model of the square pyramid is scaled down by a factor of x, then the surface area will be:

A' = (a/x)² + (a/x)*√[(a/x)² + 4(h/x)²]

A' = a²/x² + a/x * √[a²/x² + 4h²/x²]

A' = a²/x² + a/x * √[(a² + 4h²)/x²]

A' = a²/x² + a/x * √(a² + 4h²)/√x²

A' = a²/x² + a/x² * √(a² + 4h²)

A' = 1/x² * [a² + a*√(a² + 4h²)]

A' = 1/x² * A

That is, the surface area will be 1/x² times the original surface area. If h = 25 ft and a = 15 ft:

A = 15² + 15*√(15² + 4(25)²) =  1008.02 ft²

The factor is not mentioned in the question, nevertheless, the area will be  1008.02/factor² ft²

3 0
3 years ago
A baseball player has a batting average of 0.250, which means he gets a hit 25% of the time he is at bat. If he bats 450 times d
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Answer:

112.5

Step-by-step explanation:

25% of 450 = .25 x 450 = 112.5

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3 years ago
A square has a perimeter of 39.6 millimeters. What is the length of each side?​
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Answer:

9.9 millimeters

Step-by-step explanation:

To find the perimeter of a square,

Equation: 4 • length = P

So in this case, we're just working backwards. To find the length, divide.

39.6/4 = 9.9

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Answer:

4x^2+4x-1

Step-by-step explanation:

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The answer for this problem is two remainder seven
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