Answer:D
Step-by-step explanation:
(3x^3 - 5x^2 + 4x - 9)-(7x^3 - 8x^2 - 5x + 10)
open brackets
3x^3 - 5x^2 + 4x - 9 - 7x^3 + 8x^2 +5x - 10
Collect like terms
3x^3-7x^3-5x^2+8x^2+4x+5x-9-10
-4x^3+3x^2+9x-19
Hence the probability that you randomly pick a black sock from the drawer is 8/18
Answer:
x= 27
Step-by-step explanation:
<em>A right angle has to equal 90 degrees, no matter what,</em>
<em>So what times 3, plus 9, will give you 90? 27.</em>
<em>So 27 x 3 + 9 equals 90!</em>
<em />
Answer:
384π cm³ ≈ 1206.37 cm³
Step-by-step explanation:
Insert the values the problem gives to us.
V = π(12)²(8)/3
⇒ π(144)(8)/3
⇒ 384π ≈ 1206.37
The system<span> is : (i) x^{2} +</span>y<span> ^{2} =</span>6<span> and (ii) x^{2} -</span>y=6<span> rewrite </span>equation<span> (ii) as x^{2}=</span>y+6<span> and substitute x^{2} in </span>equation<span> (i) with </span>y+6<span> so </span>equation<span> (i) becomes (</span>y+6)+y<span> ^{2} =</span>6 y<span> ^{2} +</span>y<span>=0 factorize to find the roots</span>