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2 years ago

Identify the domain of the graph of y = -x2 - 6x – 13.

Mathematics

2 answers:

almond37 [142]2 years ago

8 0

Answer:

I dont know

Step-by-step explanation:

Verizon [17]2 years ago

3 0

Answer:

All real numbers

Step-by-step explanation:

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which inequality represents all values of x for which the quotient below is defined?√8x^2 divided by √2x

MA_775_DIABLO [31]

Answer:

The function is defined when x > 0

Step-by-step explanation:

Functions with radicals are only undefined when the value in the radical is negative, because the root of a negative number is imaginary.

We know the function is undefined when the denominator is equal to zero. $\sqrt{2x}$ is equal to zero when x=0.

We also know that functions with radicals are undefined when the value in the radicals are negative, because the root of a negative number is imaginary. . $8x^{2}$ will always be positive, but $2x$ is negative when x < 0.

So the function is undefined when x = 0, and when x < 0.

Therefore it is defined when x > 0

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2 years ago

Consider the surface z = x 2+4y 2+1. Suppose you are walking on this surface directly above a curve C in the xy-plane, where the

Bess [88]

With $x(t)=\cos t$ and $y(t)=\sin t$ , we have

$z(t)=x(t)^2+4y(t)^2+1$

$z(t)=\cos^2t+4\sin^2t+1$

$z(t)=3\sin^2t+2$

Then $z(t)$ has critical points where

$\dfrac{\mathrm dz}{\mathrm dt}=6\sin t\cos t=3\sin2t=0$

$\implies\sin2t=0\implies2t=n\pi\implies t=\dfrac{n\pi}2$

where $n$ is any integer.

$z(t)$ is increasing wherever $\sin2t>0$ , which happens for

$\dfrac{2n\pi}2$

$\boxed{n\pi$

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2 years ago

35 - 35 +9:3)<br> +7<br> What is the answer do you know?

Nadya [2.5K]

Answer:

35-35+9.7+7
35+9.7+7-35
16.7

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2 years ago

Please HELP Will CROWN BRAINLIEST!!!!!!!!!!!!! 20PTS

Sladkaya [172]

2, sin( θ )=6/12=1/2 => theta=30 degrees.
=> triangle is 30-60-90

3.
Cos(45)=sqrt(2)/2
=> x=10*sqrt(2)/2=5sqrt(2)

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2 years ago

In august Janet's clothing store sold 234 shirts with the ratio of short sleeves to long sleeves being 9:4. how many short sleev

makvit [3.9K]

162 short sleeve shirts; if you add 9 and 4, you get 13. Then, divide 234 by 13, which equals 18. 18 multiplied by 9 is 162.

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3 years ago