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Sav [38]
3 years ago
8

PLEASE HELP!!! I HAVE A TEST!!!

Mathematics
2 answers:
Alex Ar [27]3 years ago
8 0
(55/100)x = 121
0.55x = 121
x = 121/0.55
x = 220 which means the answer is A
dsp733 years ago
4 0
PLEASE HELP!!! I HAVE A TEST!!!
121 is 55% of what number?
C. 66.55
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A seat on a Ferris wheel is level with the center of the wheel.The diameter of the wheel is 200 feet. Suppose the wheel rotated
Zanzabum

Answer: 86.6ft closer to the ground.

Step-by-step explanation:

The diameter of the wheel is 200ft

Then the radius, half of the diameter, is: r = 200ft/2 = 100ft.

Initially, the seat is at the same level that the center of the wheel.

And the distance between the center of the wheel and the bottom is the radius.

Then the initial position is at an angle of 0° from the x-axis. (where the (0,0) of this axis coincides with the center of the wheel=

Now, the wheel rotates 60°. (downwards, so we actually could use -60° measuring from the positive x-axis)

And thinking in this as a triangle rectangle, where the opposite angle is 60°, we can calculate the displacement in the vertical direction as:

y = sin(-60°)*R

y = sin(-60°)*100ft = -86.6ft

So the seat is 86.6ft closer to the ground.

6 0
3 years ago
Read 2 more answers
∠C and ∠D are vertical angles.
denis-greek [22]

Vertical angles is the same angle, but we don't know "x". If you look in a way. We can do 180=(3x+80).

100=3x

100/3 = x

Now we have the answer for x we plug it in to get the answer.

3(100/3) + 80 =<D

<D = <C

8 0
2 years ago
Read 2 more answers
10+ 6 has the same sum as 7+
Nata [24]
7 plus 9.  10 plus 6 gives you 16, as does 7 plus 9.
4 0
2 years ago
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A 10-foot ladder is leaning against a tree. The bottom of the ladder is 4 feet away from the bottom
Naddik [55]

Answer:

4

Step-by-step explanation:

7 0
3 years ago
2xy+3x+4x+3 if x =5 and y = -5
Stels [109]

Answer:

The answer is -12

Step-by-step explanation:

2xy + 3x + 4x + 3 if x = 5 and y = -5

Now,

2xy + 3x + 4x + 3

2(5)(-5) + 3(5) + 4(5) + 3

-50 + 15 + 20 + 3

38 - 50 = -12

Thus, The answer is -12

<u>-</u><u>TheUnknownScientist</u>

6 0
2 years ago
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