asinus

8^x=16

$8^x=16$ 

$x \times ln8 = ln16$

$x= \frac {ln16}{ln8}$ 

$x=1\frac {1}{3}$

If x is an integer, then - x is positive. Is this true or false. If false, give a counterexample.

{nl} This is wrong. {nl} All numbers with a minus in front of it are negative.

counterexample:

x = 3 is a positive integer.  x = - 3.1 is a negative real number.

asinus :- )   !

What is the difference of the expression (10b-12+17a) and (7b+5+3a)

(10b - 12 + 17a) - (7b + 5 + 3a)

= 10b - 12 + 17a - 7b - 5 - 3a

= 3b - 17 + 14a   This is the difference.

asinus :- )   !

A crew is made up of 8 men; the rest are women. 66⅔% of them are men. how many people are in the crew

8 : 66 2/3% = x : 100%

x = (8 * 100%) / (66 2/3%)

x = 12

The crew consists of 12 people, 8 men and 4 women.

!

20 time 5 time 2 = 200

What is the absolute value for |10p-4| < 34 ?

$| 10p-4 |<34$

$| p | <\frac{34+4}{10}$

$| p | < 3.8$

$L = \{| p | \in \mathbb| \mathbb R | <3.8\}$

  !

$10 \times 3=30$

!

17(x-y) +9(x-y)=???

Einfach addieren.

$17(x-y) +9(x-y)=26(x-y)$

!

Bruch rechnen 1viertel:0,75

$0,75 = \frac{75}{100}$

$\frac{1}{4}:\frac{75}{100} = \frac{1}{4}\times \frac{100}{75} =\frac{100}{300}=\frac{1}{3}$

!

 how do u get 15/4 with the math problem x/3-1/2=3/4

$\frac{x}{3}-\frac{1}{2}= \frac{3}{4}$

$x =3 \times \left(\frac{3}{4}+\frac{1}{2}\right)$

$x = 3 \times 1 \frac {1}{4}$

$x= 3 \frac {3}{4} \ das \ sind \ \frac {15}{4}$

asinus !