PLEASE HELP !!

2 answers:

6 0

Log 10 100 =2
Basically, we have to know how to solve for x in this equation:
10^x = 100

For log3 = 9 we have to solve for x in this equation:
3^x = 9
Therefore, x = 2

maw [93]2 years ago

3 0

Log base 3 (9) can be rewritten as 3^x = 9. Of course 3^2 = 9 so x = 2, which is B above.

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Alex’s paycheck for the last two weeks totaled $239.64. He owes the cell phone company $45.87. How much money does he have left?

ch4aika [34]

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6 0

3 years ago

Read 2 more answers

Pythagorean theorem 19^2 + 21^2=x^2

alexira [117]

Answer:

x = 28.32 units.

Step-by-step explanation:

Given:

Longer leg = 21

Shorter leg = 19

Hypotenuse = x

To Find:

Hypotenuse = x = ?

Solution:

Pythagoras Theorem States that

$(\textrm{Hypotenuse})^{2} = (\textrm{Shorter leg})^{2}+(\textrm{Longer leg})^{2}$

Substituting of the given value above equation we get

$x^{2} =21^{2}+ 19^{2}\\ \\x^{2}=441 + 361\\\\x^{2}=802\\ \therefore x=\pm\sqrt{802} \\\textrm{as x cannot be negative}\\\therefore x=\sqrt{802}\\\\\therefore x=28.319\ units\\\therefore x=28.32\ units$