Answer:
see explanation
Step-by-step explanation:
1
Given
2x² - 16 = 0 ( add 16 to both sides )
2x² = 16 ( divide both sides by 2 )
x² = 8 ( take the square root of both sides )
x = ± 
= ± 2
------------------------------------
2
Given
- 5x² + 9 = 0 ( subtract 9 from both sides )
- 5x² = - 9 ( divide both sides by - 5 )
x² = 
( take the square root of both sides )
x = ± 
= ± 
-----------------------------------------
3
Given
6x² - 15 = 27 ( add 15 to both sides )
6x² = 42 ( divide both sides by 6 )
x² = 7 ( take the square root of both sides )
x = ± 
Step-by-step explanation:
Because this is a right triangle and it is given that one angle is 45 than also the ather angle is 45 so this triangle has 2 equal sides.So also the ather side is 6 .
Hypotenuse can be found by pythagorean theorem
6^2+6^2=x^2
36+36=x^2
x=√72
Answer:
The statement 
is equivalent to 
, 
Step-by-step explanation:
We need to prove that the following statement is equivalent to with the use of Theorem 2.1.1.
So
by De Morgan's law.
by the Double negative law
by the Distributive law
by the Negation law
by Universal bound law
Therefore
<u>Answer:</u>
x = -7
<u>Step-by-step explanation:</u>
<em>f(x) </em>= -x - 1
when <em>f(x) </em>= 6:
- x - 1 = 6
-x = 7 [Add 1 to both sides]
x = -7 [Divide both sides by -1]
Answer:
2/1
Step-by-step explanation:
