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2 years ago

The quadratic function f(x) = x^2 + 8x + 17 is equal to zero when x - a + bi

Mathematics

1 answer:

aleksley [76]2 years ago

3 0

Answer:

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Use the quadratic formula to find the solutions.

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√

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(

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Substitute the values

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, and

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into the quadratic formula and solve for

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(

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)

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⋅

(

⋅

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)

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Simplify.

Tap for more steps...

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The result can be shown in multiple forms.

Exact Form:

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Decimal Form:

9.74456264

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1.74456264

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Step-by-step explanation:

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Assume markup is based on selling price. Solve for the selling price

Bingel [31]

Answer:

162.5

Step-by-step explanation:

First u move the decimal of 25% to the left two times giving you 0.25. Then you multiply 650x0.25 equaling 162.5 as your answer.

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3 years ago

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If the ones digit of a number greater than 1 is 0,what factor or factors must that number have

nasty-shy [4]

If the units digit is zero, then you have an even number ...
' 2 ' must be one of its factors.

It must also have two or more places ... it's greater than 9.
If it had only one place, and its units digit were zero, then
the whole thing would be zero.

Since it has two or more places, 5 and 10 are also factors.

7 0

3 years ago

Suppose you have a mean standardized score of 1500 points with a standard deviation of 150 points. This data is normally distrib

Bond [772]

Answer:

z-score for 900 points = -4

Step-by-step explanation:

To find the z scores

z=(x-mean)/standard deviation

z=(900-1500)/150

z= -600/150

8 0

4 years ago

The radius of a sphere is increasing at a rate of 0.5 centimeters per minute. At a certain instant, the radius is 17 centimeters

Usimov [2.4K]

Using implicit differentiation, it is found that the rate of change of the volume of the sphere at that instant is of 1815.84 cubic centimetres per minute.

The volume of a <u>sphere of radius r</u> is given by:

$V = \frac{4\pi r^3}{3}$

Applying <u>implicit differentiation</u>, the rate of change is of:

$\frac{dV}{dt} = 4\pi r^2\frac{dr}{dt}$

In this problem, we have that $\frac{dr}{dt} = 0.5, r = 17$ , thus:

$\frac{dV}{dt} = 4\pi (17)^2(0.5) = 1815.84$

The rate of change of the volume of the sphere at that instant is of 1815.84 cubic centimetres per minute.

A similar problem is given at brainly.com/question/11496075

3 0

3 years ago

Rewrite the expression (3a^2b^3c^5)/(8x^4y^3z)so that it has no denominator. (note: do not use a fraction line in your answer. a

Gemiola [76]

Use:

$\dfrac{1}{a}=a^{-1}\\\\\dfrac{1}{a^n}=a^{-n}$

$\dfrac{3a^2b^3c^5}{8x^4y^3z}=3a^2b^3c^5\cdot8^{-1}x^{-4}y^{-3}z^{-1}$

Answer: 3"8^-1a^2b^3c^5x^-4y^-3z^-1

5 0

3 years ago

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