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inn [45]
3 years ago
12

Pls help will award most brainliest (this is due today)

Mathematics
1 answer:
DanielleElmas [232]3 years ago
3 0

i) If PQRS is a quadrilateral inscribed in a circle, then the opposite angles of the quadrilateral are supplementary.

ii) The values of x and y are 120 degrees and 120 degrees respectively.

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(8 times 10 to the fourth power)+(4 times 10 to the fourth power)
Aliun [14]

Answer:

120,000

Step-by-step explanation:

8 times 10 to the 4th power is 80,000 and 4 times 10 to the 4th power is 40,000 and 80,000 plus 40,000 is 120,000

8 0
3 years ago
The Cobb family of Fremont is looking at ways to decrease their home water and energy usage. Their current electric hot-water he
OverLord2011 [107]

Answer:

  ai) 73000 gal/yr

  aii) $730 per year

  b) 1000 days

Step-by-step explanation:

ai) The water usage per day is ...

  (4 showers/day)(10 min/shower)(5 gal/min) = 200 gal/day

Then the usage per year is ...

 (200 gal/day)(365 days/yr) = 73,000 gal/yr

__

aii) The cost of electricity is the cost of heating half the water usage, so is ...

  (0.20 kWh/gal)(1/2)(73,000 gal/yr)($0.10/kWh) = $730/yr

__

b) The current daily cost of electricity for heating water is ...

  ($730/yr)/(365 days/yr) = $2/day

If the cost is cut in half, it will be $1 per day. That means the savings is $1 per day, so it will take 1000 days to recover the $1000 initial cost. (Effectively, the average cost for the first 1000 days is the same as if the water heater had not been replaced.)

5 0
3 years ago
Alejandro has 3 times as many playlists as Derrick does. Alejandro has 24 playlists. If d = the number of playlists Derrick has,
Sindrei [870]
That's it
3*d=24
d=24/3
d=8
5 0
3 years ago
Read 2 more answers
3 1/2 divided 2 3/5 in its simplest form
xxMikexx [17]

Answer:

9.1 is answer or 91/10 or 9 1/10

4 0
2 years ago
Mark’s garden is a rectangle that is  meters long and  meters wide.  If Mark decides to fence his garden, the total length of fe
Fudgin [204]
50cm = 0.5 meters ,so he will need 32 sections
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2 years ago
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