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iragen [17]
3 years ago
7

Which equation represents "the sum of eight times a number and seven is twice the number"? A) 8(7 + 2N) B) 8N = 7 + 2N. C) 7N +

8 = 2N. D) 8N + 7 = 2N
Mathematics
2 answers:
Yuliya22 [10]3 years ago
7 0
The sum of 8 times a number and 7.....sum means add
8n + 7

is twice the number...is means equals
= 2n

so we have : 8n + 7 = 2n
igor_vitrenko [27]3 years ago
7 0
Out of the following choices given, the equation that represents "the sum of eight times a number and seven is twice the number" is 8N+7=2N. The correct answer will be D. 
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What is the slope perpendicular to y=-3
liraira [26]

check the picture below.


so, y = -3 is simply a horizontal line, as you see there, and any perpendicular line to that will be a vertical one, whose slope is undefined.

we can check by simply picking two points off the red line hmmm say (-2,2) and (-2, -2)


\bf (\stackrel{x_1}{-2}~,~\stackrel{y_1}{2})\qquad (\stackrel{x_2}{-2}~,~\stackrel{y_2}{-2}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-2-2}{-2-(-2)}\implies \cfrac{-2-2}{-2+2}\implies \stackrel{und efined}{\cfrac{-4}{0}}

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3 years ago
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lora16 [44]

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4 0
3 years ago
Expression equivelent to 2/5 divided by 6
Oksanka [162]

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8 0
3 years ago
What is the equation of the line that passes through the point (-8,0)and has a slope of -1/4
Dahasolnce [82]

Answer:

y = -1/4x - 2

Step-by-step explanation:

I'm going to write this equation in slope intercept form, which looks like this: y = mx + b. First, write the equation using the slope given. It should look like this:

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Next, you must find the y intercept by plugging in the point to the equation. This is what it looks like: 0 = -1/4(-8) + b. Multiply -1/4 by -8 to get 2. This is what your equation should look like now: 0 = 2 + b. Subtract 2 from both sides of the equation to get -2 = b. Go back to your original equation and plug -2 in for b. This is your final equation:

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Hope this helped!

8 0
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kotegsom [21]

Answer:

2√13

Step-by-step explanation:

using the distance formula;

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you plug the numbers in. once done you get 2√13.

Hope it helps!

7 0
3 years ago
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