Use the number line to find the coordinate of the midpoint of ¯¯¯¯¯ J P .

Which of the following functions have only one point that is not in the domain? Select all that apply. (There are 2 answers)

densk [106]

Answer:

B. f(x) = 3/(x^2 +2x +1)

E. f(x) = 5/(3+x)

Step-by-step explanation:

The above functions have denominators that are zero at one point. For B, that point is x=-1; for E, that point is x=-3. When the denominator is zero, the function is undefined, so the corresponding x-value must be excluded from the domain.

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As written, choice D also qualifies. This is because the function written in the answer list here is ...

$f(x)=\dfrac{1}{x^2}+5x+4$

It will be undefined for x=0.

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Comment on writing rational functions

When the division symbol (/ or ÷) is used with a denominator that is a product or sum, that product or sum must be enclosed in parentheses. When the expression is typeset, the division bar acts as a grouping symbol. When the expression is written in text, a grouping symbol, such as parentheses, must be added.

3 0

3 years ago

It is desired to draw blood 3 cm up a capillary tube. Assuming a contact angle of 0 degrees and a blood density of 1060 kg/m3, w

JulijaS [17]

Answer:

If we assume a temperature of 20ºc and the blood interfacial surface tension is similar to water interfacial surface tension, the diameter of the capillary tube should be 0.933mm.

Step-by-step explanation:

The Jurin law describes the height a fluid can reach in a capillary tube. This law can be written as:

$H=\displaystyle\frac{2\gamma cos(\theta)}{\rho gr}$

where γ is the interfacial surface tension, θ is the contact angle with the fluid, ρ is the fluid density, g is the gravity acceleration and r is the tube radius.

If we assume that the interfacial surface tension of blood and water are almost the same, γ=0,0728 N/m at 20ºc. Therefore the diameter of the tube will be:

$D=2r=\displaystyle\frac{4\gamma cos(\theta)}{\rho gH}=0.933\cdot 10^{-3}m$

4 0

2 years ago

A submarine is at 89 feet below the surface of the ocean. If it descends another 42 feet, what will be it’s position in relation

jeyben [28]

add the 2 numbers:

89 + 42 = 131 feet below the surface,

which can also be written as -131 feet

8 0

3 years ago

I need help fast with the first question in the page which is the find algebraically in R

ch4aika [34]

Answer:

2x²+5x-6 = 0

using the quadratic formula

x = 0.886 and x= -3.386

3 0

2 years ago

The equation of the line graphed below is . Do not include spaces in your answer.

labwork [276]

Whynottincludewpace

7 0

2 years ago