<span>7r²+9=1
</span><span>the equation is contradictory, just to prove
7r</span>² + 9 = 1
7r² + 9 -1 = 0
7r² + 8 = 0
<span>We write the equation in the form of products of
</span>
7 * (r² + 8/7) = 0
<span>the product is equal to 0 when one of the factors is zero
</span>
7≠0 ∨ (r² + 8/7) = 0
r² ≠ - 8/7
<span>any number squared is not negative.
</span><span>We proved that none of the factors is not equal to zero , so the right side of the equation is not equal to the left . The equation is contradictory</span>
Answer:
z = 9
z = 2
z = 5
z = 8
z = 11
Step-by-step explanation:
Answer:
The correct option is 3. The value of m is 44.
Step-by-step explanation:
The given expression is
Substitute n=8 in the above expression.
Therefore the value of m is 44 and option 3 is correct.
6*x=16
(* this symbol means multiplication)
Answer:
none of the above
Step-by-step explanation:
One milliliter is equal to a cubic centimeter. I think from the options, it's self-explanatory.
