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lbvjy [14]
3 years ago
10

TAn elevator starts at the ground floor and makes 4 stops. The positive numbers stand for going up, and the negative numbers sta

nd for going down. Which expression gives the total number of floors traveled during the 4 stops?
Mathematics
2 answers:
faust18 [17]3 years ago
7 0

Answer:

Can you post a picture?

Step-by-step explanation:

Dafna1 [17]3 years ago
7 0

Answer: can you psot a picture please

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What is an equation of the line that is perpendicular to −x+2y=4 and passes through the point (−2, 1) ?
Elza [17]

Answer:

y=-2x-3

Step-by-step explanation:

Since our equation is in standard form Ax+By=C we must first manipulate the equation so that we have it in the slope-intercept form such that y=mx+b.  Therefore:

-x+2y=4\\2y=x+4\\\\y=\frac{x+4}{2}\\\\y=\frac{1}{2}x+2

Therefore, our slope is 1/2 and our y-intercept is 2.  Now in order to determine a perpendicular line to the one stated above we must then get the negative inverse of our slope meaning \frac{1}{2}=-2 (negative reciprocal).  Now we must use the point slope formula:

y=m(x-x_1)+y_1

Where m is the slope, x1 is -2 and y1 is 1 (because of the ordered pair given). And so:

y=-2(x-(-2))+1\\\\y=-2(x+2)+1\\\\y=-2x-4+1\\\\y=-2x-3

Therefore, the line that is perpendicular to -x+2y=4 is y=-2x-3.


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3 years ago
Bill went to the movies with some of his friends. tickets cost $8.50 each . they spent $18.00 total for food . their total was $
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18.00 + 8.50 + 8.50 + 8.50 + 8.50 = 52.00

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The sum of three consecutive multiples of 7 is 168 find the numbers
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the three numbers are 49,56 and 63.

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3 years ago
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Lila bought a green poster that measured 36 inches by 24 inches and a red poster that measured 12 inches by 18 inches. If the po
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Step-by-step explanation:

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