The answer is D because 1 minute is .6 so 2 minutes would be 1.2, you just double it.
Answer:
554400
Step-by-step explanation:
To answer this question, we use combination as we are just interested in selection rather Than arrangement.
Beyonce songs ; 3 from 8 = 8C3
Justin ; 4 from 12 = 12C4
Drake ; 2 from 5 = 5C2
Version of happy birthday = 1 from 2 = 2C1
Recall :
nCr = n! ÷ (n-r)!r!
However, the answers can also be obtained using a calculator :
8C3 * 12C4 * 5C2 * 2C1 = 554400 different mix
Answer:
a =b
Step-by-step explanation:
Now that the decimal has been removed two places you can divide as if it was a regular division problem.
<span>The slope is the differential of the function.
Recall, if y = x^n, (dy/dx) = nx^(n-1).
y=</span><span>x^4-20x^2+64; x = -1. To differentiate this, we do it for each term.
(dy/dx) = (4)(x^(4 -1)) - (2)(20x^(2-1) + 0*64x^(0-1) (Note 64 = 64x^0, x^0 =1)
= (4)x^(3) - 40x^(1) </span><span><span>+ 0
= 4x^3 - 40x^1.
</span>(dy/dx) = </span><span><span><span> 4x^3 - 40x</span>. Note at x = -1.
</span>
(dy/dx), x = -1, = 4(-1)^3 - 40(-1)
<span> = -4 + 40 = 40 - 4 = 36.
</span><span>
Slope at x = -1 is 36.
</span>Cheers.</span>