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IrinaK [193]
3 years ago
9

Elevator 1 in a hotel moved from ground position to a final position of +18 feet. Elevator 2 in the same building moved from gro

und to a final position of −20 feet. Which statement best describes the final positions of these two elevators? (5 points)
Elevator 1 is 18 feet below ground level, and Elevator 2 is 20 feet above ground level.
Elevator 1 is 18 feet above ground level, and Elevator 2 is 20 feet below ground level.
Elevator 1 is 18 feet above ground level, and Elevator 2 is 20 feet below the position of Elevator 1.
Elevator 1 is 18 feet below ground level, and Elevator 2 is 20 feet above the position of Elevator 1.
5.
Mathematics
2 answers:
LiRa [457]3 years ago
7 0

Answer:

Answer B

Elevator 1 is 18 feet above ground level, and Elevator 2 is 20 feet below ground level.

Step-by-step explanation:

Both started at ground level or 0

Elevator 1 = 0 + 18 = 18

Elevator 2 = 0 -20 = -20

natima [27]3 years ago
3 0

Answer:

b or c

Step-by-step explanation:

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8090 [49]

9514 1404 393

Answer:

  5x^2 +10x = -5

Step-by-step explanation:

The equation will have one solution when the discriminant is zero.

In standard form, the equation is ...

  ax^2 +10x -c = 0

The discriminant of the equation ax^2+bx+c=0 is  ...

  b^2 -4ac

so the discriminant of your equation is ...

  10^2 -4a(-c) = 100 +4ac

We want that to be zero, so we require ...

  100 +4ac = 0

  25 +ac = 0

  ac = -25

Any pair of values of 'a' and 'c' that have a product of -25 will satisfy the requirement. As you state, one possible pair is a = 5 and c = -5. Putting these values into the given equation makes it ...

  5x^2 +10x = -5 . . . . . the equation with a=5, c=-5

_____

<em>Additional comment</em>

Your problem statement does not require that 'a' be non-zero. If <em>a=0</em>, then the equation will have one real solution for <em>any value of c</em>.

If you restrict the solutions to integers, then possibilities include ...

  (a, c) = (1, -25), (5, -5), (25, -1), (-25, 1), (-5, 5), (-1, 25)

6 0
2 years ago
Given the Standard Form equation y - 6x = 4
malfutka [58]

Answer: <u>6 is the slope and 4 is the y-intercept.</u>

Step-by-step explanation:

Based on the question, I feel this is the best way to answer your question.  I'm assuming you are in a basic graphing class.

The best, most useful thing for you right now would be to learn slope-intercept form, y = mx + b, where m and b are constants.

Simply add 6x to both sides to get into this form

y = 6x + 4.

In slope-intercept form, m is the slope, and b is the y-intercept.  Thus, 6 is the slope and 4 is the y-intercept.

Hope it helps and lmk if you need more <3 :)

7 0
2 years ago
What's the common denominator of this equation?<br> 3 - b = 6-7
GuDViN [60]

Answer:

b = 4

Step-by-step explanation:

3 - b = 6 - 7

3 - b = -1

-b = -1 -3

-b = -4

b = 4

8 0
3 years ago
Read 2 more answers
N is an integer, write down the values of n such that -15&lt;3n&lt;6
Ira Lisetskai [31]
-15 < 3n < 6

Divide all sides by 3

-5 < n < 2

Now you need all integers between -5 and 2.

-4, -3, -2, -1, 0, 1
3 0
3 years ago
6 3/4 + 3 1/8 please whats the answer
Natalka [10]

Answer:

9 7/8 is the answer, hope this helps!

Step-by-step explanation:

6 0
3 years ago
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