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pishuonlain [190]
3 years ago
10

Need help asap 15mins best

Mathematics
1 answer:
devlian [24]3 years ago
7 0

Answer:

  • find the angle KCO =57+63+x=180
  • 120+x=180
  • x=180-120
  • x=60
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in a hotel ,100 bulbs each of 60W are lightened for 6 hours a day and 40 fans each of 50Wvate run for 10 hours a day . calculate
alekssr [168]

Answer:

1680 kwhr

Step-by-step explanation:

See attached for explanation.  I converted watt*hr to kW*hr by dividing by 1000.

Fans Bulbs  

 40         100  

 50          60      W

  10            6       hours/day

20000 36000 W*hr/day

 30          30 days/month

600000 1080000    W*hr/month

  600      1080   kWhr/month

 

Total = 1680 kWhr/month

5 0
2 years ago
The diameter of a circle is 23 inches and the circle has two chords of length 14 inches what is the distance from each chord to
Svetradugi [14.3K]

Answer:

9.12 + 9.12 = 18.24 inches

Step-by-step explanation:

Diameter = 23 inches (given)

Radius = 11.5 inches

2 Chords of length = 14 inches ( You didn't specify if the 14 inches is for both chords or for a single cord. I'll assume it's for two cords 14 and 14inches apart.

To clearly solve this, we'll make some mild assumptions.

Let the perpendicular distance of the chords from the center of the circle to represented as " x and y"

Therefore:

x^2 + 7^2 = 11.5 ^ 2

x^2 + 49 = 132.25

x^2 = 132.25 - 49

x^2 = 83.25

x = √ 83.25

x = 9.12 inches

Since the cords have thesame length (Assumed from the way the question was structured, the distance would still be thesame)

y^2 + 7^2 = 11.5 ^ 2

y^2 + 49 = 132.25

y^2 = 132.25 - 49

y^2 = 83.25

y = √ 83.25

y = 9.12 inches

Therefore, the distance will be :

9.12 + 9.12 = 18.24 inches

Have fun!

6 0
3 years ago
HELPP ASaPP I’ll mark you as brainlister
nika2105 [10]

Answer:

BC ≈ 8.9 units

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos36° = \frac{adjacent}{hypotenuse} = \frac{BC}{AB} = \frac{BC}{11} ( multiply both sides by 11 )

11 × cos36° = BC , then

BC ≈ 8.9 ( to the nearest tenth )

5 0
2 years ago
Read 2 more answers
What is the solution to -2(5y-5)-3y
Alenkasestr [34]

10-13y

hope this helps

7 0
3 years ago
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A package of 4 pairs of insulated socks costs $22.36 . What is the unit price of the pairs of socks ?
Masja [62]

Answer:

5.59

Step-by-step explanation:

22.36/4 = 5.59

hope this helps!

3 0
3 years ago
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