Answer:
(-11 +/- sqrt 21) / 10
or
-0.64 , -1.56 to the nearest hundredth.
Step-by-step explanation:
9v^2 + 11v + 5 = 4v^2
5v^2 + 11v + 5 = 0
Using the quadratic formula:
v = [ - 11 +/- sqrt(11^2 - 4*5*5) ] / 2*5
= (-11 +/- sqrt 21) / 10
= -0.64 , -1.56 to the nearest hundredth.
<u><em>Answer:</em></u>
Section 1: 5.59%
Section 2: -2.16%
Section 3: -10.82%
Section 4: -6.54%
Section 5: -2.16%
Section 6: 7.86%
<u><em>Explanation:</em></u>
<u>The formula to calculate the percent change in mass is given as:</u>

<u>1- Section 1:</u>
Old mass = 7.83 g and New mass = 8.268 g
5.59%
<u>2- Section 2:</u>
Old mass = 7.4 g and New mass = 7.24 g
-2.16%
<u>3- Section 3:</u>
Old mass = 7.3 g and New mass = 6.51 g
-10.82%
<u>4- Section 4:</u>
Old mass = 7.49 g and New mass = 7.0 g
-6.54%
<u>5- Section 5:</u>
Old mass = 7.4 g and New mass = 7.24 g
-2.16%
<u>6- Section 6:</u>
Old mass = 7.89 g and New mass = 8.51 g
7.86%
Hope this helps :)
The answer is (x-y)^2
hope it helps!!!!!!
the formula is
(a-b)^2
and when you expand it, it becomes
a^2-2ab+b^2
Answer:
8:64
Step-by-step explanation:
I'm not sure tho. hope you get it right!!!
It should be true , hope this helped