You have to add all the scores and dived by the 20 students, the result is 65.85%
Answer:
Inorder to write a division expression for fraction sasha should divide the numerator (9) by the denominator (14)
Step-by-step explanation:
9√14 which will result 0.643
Changing the positive/negative happens when you multiply something by -1
-1(x-1) = -x+1
-(x-1) = (-x+1)
3 - (x - 1) = 3 + ( -x + 1) = 4 -x
I think that 0 is rational, as it always is. The answer is D. I am not sure, but I hope it helps.
<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>
