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jonny [76]
3 years ago
8

Elevator is on the 16th floor. It goes up 12 floors, down 7 floors, up 3 floors, and then down 5

Mathematics
1 answer:
seropon [69]3 years ago
6 0

Answer:

The elevator stops on the 19th floor.

Step-by-step explanation:

On the 16th floor, goes up 12 floors:

16 + 12 = 28

On the 28th floor, goes down 7 floors:

28 - 7 = 21

On the 21st floor, does up 3 floors:

21 + 3 = 24

On the 24th floor, goes down 5 floors:

24 - 5 = 19

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HELP ASAP!!!!!! PLEASE!!! :(
slamgirl [31]
The answer is 135 ......

5 0
4 years ago
Read 2 more answers
F(x)=6(-x+3), what is the value of f(-1)
IgorLugansk [536]

Replace x in the equation with -1 and solve:

6(-(-1) + 3)

Simplify the parentheses: 6(1 + 3)

Add inside the parentheses:

6(4)

Multiply

6 x 4 = 24

Answer : 24

3 0
2 years ago
Select the correct answer.
Nookie1986 [14]

Answer:

Correct option: C.

Step-by-step explanation:

(Assuming the correct function is R(x) = 2x^2 + 3x + 5)

To find the input value that gives the value of R(x) = 19, we just need to use this output value (R(x) = 19) in the equation and then find the value of x:

R(x) = 2x^2 + 3x + 5

19 = 2x^2 + 3x + 5

2x^2 + 3x -14 = 0

Solving this quadratic function using the Bhaskara's formula (a = 2, b = 3 and c = -14), we have:

\Delta = b^2 - 4ac = 9 + 112 = 121

x_1 = (-b + \sqrt{\Delta})/2a = (-3 + 11)/4 = 2

x_2 = (-b - \sqrt{\Delta})/2a = (-3 - 11)/4 = -3.5

So looking at the options, the input to the function is x = 2

Correct option: C.

3 0
3 years ago
Please help quickly as possible Thank you!​
sweet-ann [11.9K]

Answer:

A)   \frac{3}{8}, \frac{2}{5}, \frac{1}{2}, \frac{7}{10}

B) 2.53, 32.51, 514.37

Step-by-step explanation:

A)   Multiply all of them to equal 80

1/2 = 40/80  (1 x 40)  (2 x 40)

2/5 = 32/80  (2 x 16)  (5 x 16)

3/8 = 30/80  (3 x 10)   (8 x 10)

7/10 = 56/80  (7 x 8)  (10 x 8)

B) Decimals are easy  1.10 < 1.20 since one is still greater than the other.

7 0
3 years ago
Rectangle RSUT has diagonals that meet at point x.
Stels [109]

Answer:

x=12.5

y=10

Step-by-step explanation:

Properties of rectangle:

  • Opposite sides are congruent
  • All angles are right angles
  • Diagonals bisect each other
  • Diagonals are of equal length

so from the properties we came to know that diagonals bisects each other and diagonals are of equal length  

Given Rectangle RSUT has diagonals that meet at point X.

⇒RX=SX=UX=TX=\frac{1}{2}RU=\frac{1}{2}ST

⇒RX=\frac{1}{2}ST

⇒4x=\frac{1}{2}(100)

⇒x=12.5

Also XU=RX

⇒(4)(12.5)=5y

⇒5y=50

⇒y=10

3 0
3 years ago
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