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3 years ago

Find geometric mean between 3 and 6

2 answers:

4 0

Call the geometric mean ' G '.

Then (3 / G) = (G / 6)

This is a proportion, and may be "cross-multiplied":

G² = 18

G = √18 = about 4.2426... (rounded)

zalisa [80]3 years ago

3 0

$geometric\ mean\ between \ a\ and\ b\ = \sqrt{a\cdot b} \\----------------------\\\\geometric\ mean= \sqrt{3\cdot6} = \sqrt{3\cdot3\cdot2} =3\cdot \sqrt{2}$

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She has saved $30 which is three fifths of the total cost, how much is the total cost

drek231 [11]

Answer:

$50

Step-by-step explanation:

3/5=30/x

x= The total cost

You can see that 3×10 multiplies to 30, so the total cost would be 5×10.

Total cost= 50

4 0

3 years ago

To the nearest tenth, find the area of a circle with a<br>diameter of 8 meters. Use 3.14

raketka [301]

Answer:

50.27

Step-by-step explanation:

A=1/4πd^2

A = 1/4(3.14)8^2

3 0

3 years ago

Explain how you can find 4 x 754 using two different methods

Citrus2011 [14]

Solution: The value of $4\times 754$ is 3,016.

Explanation:

The first method of multiplication is given below:

Multiply the ones digit by the multiplier and write the ones digit of the result in the bottom line and add the tens digit to the next resultant, and same happens with the next number multiplied. This method show in given figure.

The second method of multiplication is given below:

Write the digits as the addition of their place values and then multiply those place value by multiplier individually after that add the results.

$4\times 754=4\times (700+50+4)\\4\times 754=4\times700+4\times50+4\times4\\4\times754=2800+200+16\\4\times754=3016$

Therefore, the value of $4\times 754$ is 3,016.

6 0

3 years ago

Read 2 more answers

A pool is filling with water at a constant rate.after 10 minuets the height of the water level is 6 inches.after 15 minuets the

Alex73 [517]

The answer would be 18 minutes.

15/9 = 30/x

cross multiply

15x=270

then divide

x=18

5 0

2 years ago

If $1000 is invested in an account earning 3% compounded monthly, how long will it take the account to grow in value to $1500? R

My name is Ann [436]

Answer:

14 months

Step-by-step explanation:

1 month) 1.03(1000) = 1030

2 months) 1030(1.03) = 1060.9

3 months) 1060.9(1.03) = 1092.727

4 months) 1092.727(1.03) = 1125.50881

5 months) 1125.50881(1.03) = 1159.2740743

6 months) 1159.2740743(1.03) = 1194.05229653

7 months) 1194.05229653(1.03) = 1229.87386542

8 months) 1229.87386542(1.03) = 1266.77008139

9 months) 1266.77008139(1.03) = 1304.77318383

10 months) 1304.77318383(1.03) = 1370.01184302

11 months) 1370.01184302(1.03) = 1411.11219831

12 months) 1411.11219831(1.03) = 1453.44556426

13 months) 1453.44556426(1.03) = 1497.04893119

14 months) 1497.04893119(1.03) = 1541.96039912

I multiplied them all by 1.03 because 0.03 is 3% but if I multiplied the numbers by 0.03 it would give me 3% of that number instead of increasing it by 3% so by doing 1.03 x the number I am adding the 3% onto the number

3 0

3 years ago