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olga55 [171]
2 years ago
14

Can someone explain to me

Mathematics
1 answer:
Veseljchak [2.6K]2 years ago
3 0

Answer:

The correct angles would be AFE and CFD

Step-by-step explanation:

Vertical angles are 2 intersecting lines that make equivalent angles (usually 180 degrees of each other). Basically a vertical angle is the opposite of another angle, having the same degrees as it's opposite, or vertical, in this case.

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PLEASE HELP I ONLY HAVE 12 MINUTES!! The pendulum of the grandfather clock shown below swings at a maximum angle of 25 degrees.
Vaselesa [24]

Answer: T = 2π√(I/mgD)

Step-by-step explanation:

where:

m is the mass of the pendulum;

I is the moment of inertia of the mass; and

D is the distance from the center of mass to the point of suspension.

Determine the length of the pendulum. For example, it can be equal to 2 m.

Decide a value for the acceleration of gravity. We will use the Earthly figure of 9.80665 m/s², but feel free to check how the pendulum would behave on other planets.

Calculate the period of oscillations according to the formula above: T = 2π√(L/g) = 2π * √(2/9.80665) = 2.837 s.

Find the frequency as the reciprocal of the period: f = 1/T = 0.352 Hz.

You can also let this simple pendulum calculator perform all calculations for you!

7 0
2 years ago
Read 2 more answers
A store that sells skis buys them from a manufacturer at a wholesale price of $63. The store’s markup rate is 50%. a. What price
Reptile [31]

a. The store charges $94.5 for the skis

b. 150% of the original price is the final price

Step-by-step explanation:

The given is:

  • A store that sells skis buys them from a manufacturer at a wholesale price of $63
  • The store’s markup rate is 50%

We need to find at what price the store charges its customers for the skis and

what percent of the original price is the final price

∵ The store buys the skis at $63

∴ The cost price of the skis = $63

∵ The store’s markup rate is 50%

- Find the amount of 50% of the cost price

∵ 50% of 63 = \frac{50}{100} × 63 = 31.5

∴ the store's markup the cost of the skis by $31.5

- To find the selling price add 31.5 to the cost price

∴ The selling price of the skis = 63 + 31.5 = $94.5

a. The store charges $94.5 for the skis

To find what percent of the original price is the final price divide the final price by the original price then multiply the quotient by 100%

∵ 94.5 ÷ 63 = 1.5

∵ 1.5 × 100% = 150%

∴ The final price is 150% of the original price

b. 150% of the original price is the final price

Learn more:

You can learn more about the percentage in brainly.com/question/1834017

#LearnwithBrainly

5 0
3 years ago
Find is the value of x.*
Setler79 [48]

Answer:

x=4

Step-by-step explanation:

3x=5x-8

3x-5x= -8

-2x= -8

x= -8÷-2

x=4

6 0
2 years ago
A railroad crew can lay 7 miles of track each day. They need to lay 203 miles of track. The length, L (in miles), that is left t
swat32

Answer:

It will take 29 days to lay the track

After 18 days the crew still has 77 miles of track left to lay

Step-by-step explanation:

203÷7

=29 days

L= 203 - 7(18)

L= 203 - 126

L= 77

7 0
3 years ago
The temperature of the rod was 10°C above zero. It was kept in a freezer at 2 p.m. If
aleksklad [387]

Answer:

I think it would take 6 minutes to reach temperature below 8 °C

5 0
2 years ago
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