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Sever21 [200]
3 years ago
14

If the mean proportional between x and 2 is 4, find x​

Mathematics
1 answer:
Maru [420]3 years ago
7 0

Answer:

b2 = ac

4 square = x×2

16=2x

x=8

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melisa1 [442]
The answer is 1000 millimeters in one meter
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A rectangular prism is 2 meters long, 50 centimeters wide, and 1 meter high. What is its volume? (Hint: How many centimeters are
Virty [35]
Volume
 V = WhL
V = (50)(2)(1)
V = 100 cubic centimeters
4 0
4 years ago
The Kentucky derby distance is 19 furlongs. How far is the Kentucky derby?how many rods
Bumek [7]

Answer:

760 rods.

Step-by-step explanation:

If my memory serves me right there are  4 rods in a chain and 10 chains in a furlong.

So 19 furlongs = 19 * 10 * 4 rods

= 760 rods.

4 0
4 years ago
Marie bought souvenir at the beach that is made up of a square pyramid filled with sand. The base of the pyramid has a side leng
Artemon [7]

Answer:

the answer is 48cm

Step-by-step explanation:

all you do is you times 6 by 8

6 0
3 years ago
Read 2 more answers
A train travels from station A to station B. If the train leaves station A and makes 75 km/hr, it arrives at station B 48 minute
SSSSS [86.1K]

Answer:

  • A) 290 km
  • B) 4 hours
  • C) 72.5 km/h

Step-by-step explanation:

Let distance be d and time t

<u>At 75 km/h speed the distance is</u>

  • d = 75(t - 48 min) = 75(t - 48/60 hours)

<u>At 50 km/h speed the distance</u> is

  • d = 50t + 40

<u>Since the distance is same, we get the equation:</u>

  • 75(t - 48/60) = 50t + 40
  • 75t - 75*4/5 = 50t + 40
  • 75t - 60 = 50t + 40
  • 75t - 50t = 40 + 60
  • 25t = 100
  • t = 4 hours

<u>A) The distance between A and B</u>

  • d = 50*5 + 40 = 290 km

<u>B) Time is </u>

  • 4 hours as found above

<u>C) The speed = d/t</u>

  • Speed = 290/4 = 72.5 km/h

6 0
3 years ago
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