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4 years ago

Rewrite y + 3 = 0 using function notation.

1 answer:

4 0

First rewrite as y = ..., just move the +3 to the other side (sign flips):

y = -3.

Then replace y by f(x):

f(x) = -3.

This is a straight line at y=-3.

Answer B.

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Answer:I think it’s 75

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3 years ago

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If x^2=20 what is the value of x will give brainliest for answer

Schach [20]

Answer:

x² - 20 = 0

Using the quadratic formula

$x = \frac{ - b± \sqrt{( {b})^{2} - 4ac } }{2a}$

a = 1 b = 0 c = -20

So we have

$x = \frac{ - 0 ± \sqrt{ {0}^{2} - 4(1)( -20)} }{2(1)} \\ \\ x = \frac{± \sqrt{80} }{2} \\ \\ x = \frac{±4 \sqrt{5} }{2} \\ \\ \\ x = ±2 \sqrt{5} \\ \\ \\ x = 2 \sqrt{5} \: \: \: or \: \: \: x = - 2 \sqrt{5}$

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3 years ago

10. The length of the radius of a bicycle wheel is 14 inches. Which of the following is closest to the circumference of the whee

Elina [12.6K]

Answer:

87.92

Step-by-step explanation:

you have your radius 14 inches to get the answer is

1: pie is 3.14

2: circumference is 2× 3.14×14

3: 3.14×14

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3 years ago

You must reverse the inequality sign when solving this inequality: x + 7 < 4

SSSSS [86.1K]

I'm not 100% sure what you want me to do with this but i hope this helps:

x < -3

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3 years ago

Help me please i need your help

marishachu [46]

Answer:

$\large\boxed{\boxed{\underline{\underline{\maltese{\pink{\pmb{\sf{\: SOLUTION: \: \: \: \: (3x + 4)^{2}}}}}}}}}$

Step-by-step explanation:

The given statement is;: 'I think of a number, multiply it by 3, add 4 & square the result.'

At first, let's take the unknown number as 'x' . (asked in the question).

So, the number we think about = x

Now, we need to multiply it by 3. So,

3 * x = 3x

In the next part, we need to add 4 to it so,

3x + 4

Now, by squaring the result, we'll get the expression as,

<u>(3x + 4)²</u>

Hope it helps!

$\mathfrak{Lucazz}$

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3 years ago

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