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Butoxors [25]
3 years ago
13

Cho 4 điểm ABCD thỏa mãn điều kiện AB//CD; AD//BC. Gọi P và Q lần lượt là trung điểm của DC và BC. Gọi M là trung điểm của AB. G

ọi E, F lần lượt là giao điểm của BD với AP và CM; O là giao điểm của AC và BD.
a) Chứng minh O là trung điểm của AC và BD.
b) Chứng minh C, F, M thẳng hàng.
c) Chứng minh DE = EF = FB.
Mathematics
1 answer:
lina2011 [118]3 years ago
4 0

Answer:

i dont even know this language

Step-by-step explanation:

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At a pizzeria, a medium pizza which has diameter of 12 inches sells for $6.00 and a large pizza which has a diameter of 16 inche
Sidana [21]
We are comparing areas, so square of the linear dimension
Relative cost per unit area
12^2/6=24
16^2/10=256/10=25.6
Since 24<25.6, the 12" pizza is a better deal.

Note: we could compare exact area by calculating A=pi (d^2)/4, but since it is a relative comparison, the result will be the same, albeit more work.
5 0
3 years ago
A roller coaster starts with the cars being pulled up a ramp. The mass of the cars is estimated by the function m(p) = 175p + 1,
KiRa [710]

Answer:

E(p)=51,450p+346,920

Step-by-step explanation:

The function

m(p) = 175p + 1,180

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And the function

E(m) = 9.8m*h

gives the potential energy of the car as a function of the car's mass.

Now if the height of the ramp is 30 meters, we have

E(m) =9.8m*(30)

E(m) =294m

And to find the potential energy as a function of the number of passengers, we just substitute m(p) into E(m) to get:

E(m(p))=294(175p+1180)

\boxed{ E(p)=51,450p+346,920}

which gives the potential energy as a function of the number of passengers.

7 0
3 years ago
F(x) = x2 + 3x<br> g(x) = 2x – 5<br><br> Find f (x) + g(x)
AVprozaik [17]

Answer:

Step-by-step explanation:

3 0
3 years ago
SOMEONE HELP ME PLEASE
IgorC [24]

A standard die has numbers = 1,2,3,4,5 and 6

Total outcomes = 6

P = Number of outcomes/Total Outcomes

Even and less than 4 = 1,2,3,4 and 6

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Answered by GauthMath if you like please click thanks and comment thanks

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Please help<br><br> 20% of 3km = ?
Lorico [155]

20% of 3km is 0.6 Kilometer

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3 years ago
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