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3 years ago

What is the geometric mean between 7 and 12

Mathematics

2 answers:

Tresset [83]3 years ago

6 0

Answer:

Geometric Mean = 9.17

Step-by-step explanation:

Here,

a = 7

b = 12

Geometric mean = root(ab)

= root( 7 x 12)

= root(84)

= 9.17

Ad libitum [116K]3 years ago

4 0

9.5 is the geometric mean of any 2 numbers.

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Agata [3.3K]

The equation is $\sqrt{x-2 \\ \\$ - $\sqrt{2x}$ = $\sqrt{x +2}$

Solution

Step 1:

Take square on both sides, we get

3x - 2 $\sqrt{x-2}$ $\sqrt2{x}$ -2 = x +2

Step 2:

Subtract 3x - 2 from both sides, we get

-2 $\sqrt{x-2} \sqrt{2x} = -2x + 4$

Step 3:

Again, square on both sides in order to get rid of the square root from the above equation, we get

$8x^{2}-16x = 4x^{2} -16x +16$

Now we have to simplify it,

$4x^{2} -16 = 0$

Step 4:

Now we have to solve this quadratic equation, in order to get the solution.

We get x = 2 and x = -2, When we verifying solution in the original given equation, the solution does not satisfy the equation.

Reason: We get negative number in the square root.

Therefore, it has no Roots.

Answer: b) No roots

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3 years ago

HELP ME! Deandre estimated the weight of his mountain bike to be 13 kg. The actual weight of his mountain bike was 12.7 kg.

makkiz [27]

Answer:

Absolute error = 13-12.7=0.3

13 =100%

12.7=x

x=(12.7)(100)/13

x=97.7

the percentage error is 97.7%

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3 years ago

Solve for x -3x+6=2x-24 -30 -6 6 30

Svetach [21]

-3x + 6 = 2x - 24.

Add 3x to both sides.

6 = 5x - 24.

Add 24 to both sides.

30 = 5x.

Divide it all by 5.

x = 6.

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4 years ago

Find the 50th term of this arithmetic sequence: 6, 13, 20, 27, . . .

sladkih [1.3K]

Answer: 349

Step-by-step explanation:

Using the arithmetic sequence, it would add up to be 349

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2 years ago

A pizza costs 9.00 there is also a 3.50 delivery fee per delivery not per pizza write an expression that shows the cost of a del

lara31 [8.8K]

Answer:

a.) 9.00+3.50= 12.50

b.) 9.00x+3.50

c.) answers below

2. 9.00*2+3.50= 18.00+3.50= 21.50

3. 9.00*3 +3.50= 27.00+3.50= 30.50

4. 9.00*4+350= 36.00+3.50= 39.50

5. 9.00*5+3.50= 45.00+3.50= 48.50

Step-by-step explanation:

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3 years ago