3 years ago

Find the geometric mean between the pair of numbers 9 and 36

Mathematics

1 answer:

Degger [83]3 years ago

5 0

Answer:18

Step-by-step explanation:

9/x = x/36

x^2 = 324

x=18

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Square the following general examples to determine the general rule for squaring a binomial:

gayaneshka [121]

Answer:

See explanation below.

Step-by-step explanation:

For part a we have the following expression:

$(a+b)^2 = a^2 +2ab + b^2$

And for part b we got:

$(a-b)^2 = a^2 -2ab +b^2$

On general we have the following formula:

$(a+b)^n =\sum_{k=0}^n (nCk) a^{n-k} b^k$

We see that if n=2 we have this:

$(a+b)^2 =\sum_{k=0}^2 (2Ck) a^{2-k} b^k$

$(a+b)^2 = (2C0) a^2 b^0 + (2C1)a^{2-1} b^1 + (2C2) a^{2-2} b^2$

$(a+b)^2 = a^2 +2ab + b^2$

And for the other possibility we have:

$(a+b)^n =\sum_{k=0}^n (-1)^k (nCk) a^{n-k} b^k$

We see that if n=2 we have this:

$(a+b)^2 =\sum_{k=0}^2 (2Ck) a^{2-k} b^k$

$(a+b)^2 = (-1)^0 (2C0) a^2 b^0 +(-1)^1 (2C1)a^{2-1} b^1 + (-1)^2 (2C2) a^{2-2} b^2$

$(a+b)^2 = a^2 +2ab + b^2$

So then we have the general expression for any binomial term elevated at any power.

7 0

3 years ago

Please help.<br><br> For math class

AleksAgata [21]

Answer:

x = 30, z = 45, y = 105

Step-by-step explanation:

The lines are straight, so:

x = 30

z = 45

y = 180 - (45 + 30)

So there

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3 years ago

Sam charges $3 per week to care for house plants while the owners are out of town. He had six customers in one two-week period.

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He spent 28.8 dollars
Equation- 3*6*2 then divided by 5 times 4 is your answer

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I’m pretty sure the answer is $80 cents

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the sopwith camel was a british first world war ssingle seat biplane fighter introduced on the wetern front in 1917 traveling at

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