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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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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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Answer:

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Read 2 more answers

A rectangular tank 60 cm long and 50 cm wide is /5 full of water. When 24 liters of water are added, the water level rises to th

bija089 [108]

Answer:

The tank is 10cm high

Step-by-step explanation:

Given

$L=60cm$ -- length

$W=60cm$ -- width

$x = \frac{1}{5}$ --- water lever

$Addition = 24L$

Required

The height of the tank

Let y represents the remaining fraction before water is added.

So:

$y + x = 1$

Make y the subject

$y = 1 - x$

$y = 1 - \frac{1}{5}$

Solve

$y = \frac{5 - 1}{5}$

$y = \frac{4}{5}$

Represent the volume of the tank with v

So:

$y * v = 24L$

Make v the subject

$v = \frac{24L}{y}$

Substitute: $y = \frac{4}{5}$

$v = \frac{24L}{4/5}$

$v = 30L$

Represent the height of the tank with h;

So, the volume of the tank is:

$v = lwh$

Make h the subject

$h = \frac{v}{lw}$

Substitute values for v, l and w

$h = \frac{30L}{60cm * 50cm}$

Convert 30L to cm^3

$h = \frac{30*1000cm^3}{60cm * 50cm}$

$h = \frac{30000cm^3}{3000cm^2}$

$h = 10cm$

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3 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

A box with a square base and no top is to be made from a square piece of carboard by cutting 5 in. squares from each corner and

Vanyuwa [196]

16820 = 5 x 3364 = 5 x 58 x 58
You would need cardboard 5 + 58 + 5 = 68 in. across
The answer is 68 in. by 68 in.

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2 years ago