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Brums [2.3K]
2 years ago
14

I need help on this i need help on this​

Mathematics
1 answer:
elena55 [62]2 years ago
3 0

Answer:

A

Step-by-step explanation:

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40 POINTS PLEASE HELP!
White raven [17]

Answer:

-1.70588235294

1. X3,    15x - 10y = 80   15x - 7y = 51

-17y = 29

2. 8 = 1/60 + a. 8 - 1/60 = 7.98333333333

  6 = 1/80 + b. 6 - 1/80 =  5.9875

                                         13.9708333333

3. I genuinely dont know sorry.

4. Pencil = $0.05. Pen = $1.05

Step-by-step explanation:

7 0
2 years ago
A pendulum is 18 feet long. Its central angle is 44º. The pendulum makes one back and forth swing every 12 seconds. Each minute,
expeople1 [14]
Radius: r=18 feet
Cental Angle: A=44°
Each cycle (one back and forth) lasts 12 seconds
In each cycle the pendulum swings:
L=(A/360°) 2 pi r
L=(44°/360°)(2)(3.141592654)(18 feet)
L=(0.122222222)(113.0973355 feet)
L=13.82300764 feet
Rounded to 3 decimal places:
L=13.823 feet

Each minute (60 seconds) the pendulum makes:
Number of cycles: n=(60 seconds) / (12 seconds)→n=5 cycles

Then, each minute, the pendulum swings:
T=nL=5(13.823 feet)→T=69.115 feet

Answer: Each minute, the pendulum swings 69.115 feet. 
8 0
3 years ago
Which kind if triangle is shown? (1point)
Salsk061 [2.6K]
Hey there! :D

None of the sides are equal. We can tell this by just looking at it. If the side BC was a straight side, it would be a right triangle, but it is not. It doesn't have any right angles. 

It is a scalene triangle. It has no equal sides and no equal angles.

I hope this helps!
~kaikers
6 0
3 years ago
Please helpppppppppppppppppppppppppppppppppppppppp :)
Nikitich [7]

Answer:

isosceles triangle, base 5 cm, height 8 cm

Step-by-step explanation:

----------

4 0
2 years ago
X/5 = 8/9 what is x​
Gelneren [198K]

Answer:

4.444444

Step-by-step explanation:

6 0
3 years ago
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