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3 years ago

Besties if your looking for 50+ points and brainliest plz answer this correctly thanks

Mathematics

1 answer:

Harlamova29_29 [7]3 years ago

6 0

A: -0.7
B: 0.9
C: (given)
D: -0.1
E: -0.9
F: 0.7

hope this helps!! :)

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The square root of a negative number, such as StartRoot negative 144 EndRoot, is undefined. Explain why the square root of –x, S

IRINA_888 [86]

Answer:

see the explanation

Step-by-step explanation:

we have

$f(x)=\sqrt{-x}$

we know that

The radicand of the function cannot be a negative number

$-x\geq 0$

Solve for x

Multiply by -1 both sides

$x\leq 0$

The domain of the function f(x) is the interval -----> (-∞, 0]

The domain is all real numbers less than or equal to zero

The range of the function f(x) is the interval ----> [0,∞)

The range is all real numbers greater than or equal to zero

<em>Example</em>

For x=144

$144\leq 0$ ----> is not true

This value of x not satisfy the domain

substitute

$f(x)=\sqrt{-144}$ ----> this value is undefined

For x=-144

$-144\leq 0$ ----> is true

This value of x satisfy the domain

substitute

$f(x)=\sqrt{-(-144)}$

$f(x)=\sqrt{144}$ ----> this value is defined

therefore

The function will be undefined for all those values of x that do not belong to the interval of the domain of the function

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I think it’s B because

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Evaluate 0.3 y+\dfrac yz0.3y+ z y 0, point, 3, y, plus, start fraction, y, divided by, z, end fraction when y=10y=10y, equals,

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Answer:

Step-by-step explanation:

Put the numbers where the corresponding variables are in the formula and do the arithmetic.

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The expression evaluates to 5.

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Answer:

Step-by-step explanation:

4 + (x + 1)

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Hope this helps!

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