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2 years ago

What is the equivalent expression for( 7 x 6+7 x y)

Mathematics

1 answer:

SpyIntel [72]2 years ago

4 0

Answer:

7x (y + 6)

x(7 y + 42)

Step-by-step explanation:

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Sheet 3

OleMash [197]

Answer:

1) Yes

2) Yes

3) Yes

4) No

Step-by-step explanation:

A function has to have points that do not share a domain (x-coordinate). All of the options meet this requirement other then option 4.

Hope it helps!

5 0

2 years ago

What is 5 out of 6 subtract 5out of 6

AleksandrR [38]

Your answer is -1.

5 - 6 + -1

4 0

2 years ago

For the past three months, Grace used her cell phone for 43 minutes, 62 minutes, and 57 minutes how many minutes would she have

mina [271]

Answer:1

Step-by-step explanation:

Her average over those three months already is 54 so she has and average on 1 min left

8 0

2 years ago

Find the value of k. Enter as an exact, simplified value.

Nadya [2.5K]

27.2289?=k I used sine

8 0

2 years ago

Use a graphing utility to graph the function and the damping factor of the function in the same viewing window.

Bas_tet [7]

Answer:

The function touches the damping factor

at x= $\frac{(4n-3)\pi}{2}$ and x= $\frac{(4n-1)\pi}{2}$

The x-intercept of f(x) is

at x= $n\pi$

Step-by-step explanation:

Given function is f(x)= $e^{-3x} sin(x)$ and damping factor as y= $e^{-3x}$ and y= $(-1)e^{-3x}$

To find when function touches the damping factor:

For f(x)= $e^{-3x} sin(x)$ and y= $e^{-3x}$

Equating the both the equation,

$e^{-3x} sin(x)=e^{-3x}$

$sin(x)=1$

x= $\frac{(4n-3)\pi}{2}$

For f(x)= $e^{-3x} sin(x)$ and y= $(-1)e^{-3x}$

Equating the both the equation,

$e^{-3x} sin(x)=(-1)e^{-3x}$

$sin(x)=(-1)$

x= $\frac{(4n-1)\pi}{2}$

Therefore, The function touches the damping factor x= $\frac{(4n-3)\pi}{2}$ and x= $\frac{(4n-1)\pi}{2}$

To find x-intercept of f(x):

For x-intercept, y=0

f(x)= $e^{-3x} sin(x)$

y= $e^{-3x} sin(x)$

$e^{-3x} sin(x)=0$

Hence, $e^{-3x}$ is always greater than zero.

Therefore, $sin(x)=0$

x= $n\pi$

Thus,

The x-intercept of f(x) is at x= $n\pi$

7 0

3 years ago