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4 years ago

9

I need help with 4 5 6 and 7

1 answer:

Lady_Fox [76]4 years ago

4 0

Answer:

it is not clear plz take a clear image

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Select all equations that have two solutions. a x^2=16 b 4x^2=0 c x^2=-16 d 3x+2=14 e x^2-1=24 f (x+8)(x-8)=0

never [62]

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a )

${x}^{2} = 16$

$x = ± \: 4$

Two solutions.

_________________________________

b )

$4 {x}^{2} = 0$

$x = 0$

One solution .

_________________________________

c )

${x}^{2} = - 16$

$No \: \: solution.$

_________________________________

d )

$3x + 2 = 14$

$x = 4$

One solution.

_________________________________

e )

${x}^{2} - 1 = 24$

${x}^{2} = 25$

$x =± \: 5$

Two solutions.

_________________________________

f )

$(x + 8)(x - 8) = 0$

$x = - 8 \: \: or \: \: x = 8$

Two solutions .

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5 0

3 years ago

FILE IS ATTACHED TO QUESTION

DiKsa [7]

The question isn’t there

3 0

3 years ago

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,if the swimmer is in a 100m race she swims the first half of the race and 32.34 seconds and the last half of the race and 34.83

joja [24]

The swimmer will take 67.17 second.

6 0

3 years ago

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If 3f(x) - f(1/x) = x^2 , what is the value of f(1/2)?<br>and it's from R-{0} to R obviously.

GarryVolchara [31]

Answer:

0.59375‬

Step-by-step explanation:

3f(x) - f(1/x) = x^2

x = 2: 3f(2) - f(1/2) = 2^2

x = 1/2: 3f(1/2) - f(2) = (1/2)^2

Let a = f(1/2) and b = f(2):

3b - a = 4; 3a - b = 1/4

3b - 4 = a

3(3b-4) - b = 1/4

8b = 12 + 1/4

b = 1.53125‬

3 * 1.53125‬ - 4 = a

a = 0.59375‬

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3 years ago

Use a calculator to approximate sin 6° and round to<br> four decimal places.

Lesechka [4]

Answer:

0.2794

Step-by-step explanation:

4 0

3 years ago

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