Hello!
26xy(x + 5)(y - 4) ÷ 13x(y - 4) =
= 2xy × (x + 5) × (y - 4)x × (y - 4) =
= 2x²y × (x + 5) × (y - 4) × (y - 4) =
= 2x²y × (x + 5) × (y - 4)² =
= 2 × [x × (y - 4)]² × y × (x + 5) =
= 2(xy - 4x)² × y × (x + 5) =
= (2xy + 10y) × (x²y² - 8x²y + 16x²) =
= 2x³y³ - 16x³y² + 32x³y + 10x²y³ - 80x²y² + 160x²y
Good luck! :)
Answer:
never because you're multiplying the number -2 times so it will be positive only if the variable is positive.
Step-by-step explanation:
what if x=2?
2^-2
=
1
/2*2
=
1
/2^2
=
1
/4 or 0.25
what if x=-5?
-5^-2
=−1*5−2
=−1* 1
/5*5
=
−1
/5*5
=
−1
/5^2
=
−1
/25 or-0.04
n
Answer:
The distance between Shawna's Home and Rochester is 228 mi and takes her 6 hr to make the drive.
Step-by-step explanation:
<u>Known Data</u>
Final distance is the same for both
, but for Terrence
, due he didn't arrive for 56 mi
Initial distance is the same for both ![x_{i}=0m](https://tex.z-dn.net/?f=x_%7Bi%7D%3D0m)
Shawna's Velocity
, and time ![t](https://tex.z-dn.net/?f=t)
Terrence's Velocity
, and time, as he starts 2hr later ![t-2](https://tex.z-dn.net/?f=t-2)
<u>Formula</u>
, for both cases
<u>Equation System</u>
Shawna:
or (1) ![x-38t=0](https://tex.z-dn.net/?f=x-38t%3D0)
Terrence:
,
,
and finally (2)![x_{f}-43t=-30](https://tex.z-dn.net/?f=x_%7Bf%7D-43t%3D-30)
By solving this equation system (1) and (2), using any method, we obtain
and
.
Answer:
Step-by-step explanation:
y = 2x - 1
(5,?).....so we know that x = 5....so sub in 5 for x in ur original equation and find y
y = 2x - 1
y = 2(5) - 1
y = 10 - 1
y = 9.....so ur point is (5,9).....with y being 9
if the diameter of the can is 6 cm, then its radius is half that, or 3 cm.
![\bf \textit{surface area of a cylinder}\\\\ SA=2\pi r(h+r)~~ \begin{cases} r=radius\\ h=height\\ \cline{1-1} r=3\\ h=12 \end{cases}\implies SA=2\pi (3)(12+3) \\\\\\ SA=6\pi (15)\implies SA=90\pi \implies SA\approx 282.74](https://tex.z-dn.net/?f=%5Cbf%20%5Ctextit%7Bsurface%20area%20of%20a%20cylinder%7D%5C%5C%5C%5C%20SA%3D2%5Cpi%20r%28h%2Br%29~~%20%5Cbegin%7Bcases%7D%20r%3Dradius%5C%5C%20h%3Dheight%5C%5C%20%5Ccline%7B1-1%7D%20r%3D3%5C%5C%20h%3D12%20%5Cend%7Bcases%7D%5Cimplies%20SA%3D2%5Cpi%20%283%29%2812%2B3%29%20%5C%5C%5C%5C%5C%5C%20SA%3D6%5Cpi%20%2815%29%5Cimplies%20SA%3D90%5Cpi%20%5Cimplies%20SA%5Capprox%20282.74)