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Dahasolnce [82]
3 years ago
14

What is the distance between C(4,3) and D(7, 7)?

Mathematics
1 answer:
Inessa [10]3 years ago
8 0

Step-by-step explanation:

g it is g

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Mountain officials want to know the length of a new ski lift from A to C , as shown in the figure below. They measure angle DAC
Ede4ka [16]
We assume that the hill is represented by points ACD  and the ski lift is represented by points BCD. From the description above, points CDB would have an angle of 90 degrees. Then, we would have:

sin (32) = CD / 960
CD = 508.72

tan 32 = 508.72 / AD
AD = 814.13

Therefore, the distance would be 814.13 - 508.72 = 305.4 ft.

4 0
3 years ago
Jack has sold 6 of the 90 cards he made. He sells the same number of cards each of the next 12 days. Write an inequality to repr
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Answer:

6c12

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The nth term of a sequence is 2n-1.
damaskus [11]

Answer: 25, 31 and 37

Step-by-step explanation:

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3 years ago
The Doppler effect causes a sound moving towards you to sound higher pitched and a sound moving away from you to sound lower pit
dlinn [17]

Answer: 54.88 mph

Step-by-step explanation: the Doppler effect formulae is given below as

f' = (v + vo) /(v - vs) × f

Where f' = observed frequency = 236 Hz,

f = frequency of sound source (stationary frequency) = 253 Hz.

v = speed of sound in air = 761 mph

Since the car (source) is moving away relative to the observer, vs will have a negative value (-vs)

vo = 0 mph ( since the observer is not moving)

By substituting the parameters, we have that

236 = (761+0)/(761 - (-vs)) × 253

236 = (761/ 761 +vs) × 253

By cross multiplication, we have that

236 × (761 +vs) = 761 ×253

761 + vs = 761 ×253/ 236

761 + vs = 192533/ 236

761 + vs = 815.88

vs = 815.88 - 761

vs = 54.88 mph

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4 years ago
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3 years ago
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