Solve the following system using substitution:
{y + 2.3 = 0.45 x
{-2 y = -3.6
In the second equation, look to solve for y:
{y + 2.3 = 0.45 x
{-2 y = -3.6
-3.6 = -18/5:
-2 y = -18/5
Divide both sides by -2:
{y + 2.3 = 0.45 x
{y = 9/5
Substitute y = 9/5 into the first equation:
{4.1 = 0.45 x
{y = 9/5
In the first equation, look to solve for x:
{4.1 = 0.45 x
{y = 9/5
4.1 = 41/10 and 0.45 x = (9 x)/20:
41/10 = (9 x)/20
41/10 = (9 x)/20 is equivalent to (9 x)/20 = 41/10:
{(9 x)/20 = 41/10
{y = 9/5
Multiply both sides by 20/9:
Answer: {x = 82/9
{y = 9/5
Answer:
(A) dependent variable
(B) Dependent variable
(C) independent variable
(D) independent variable
Step-by-step explanation:
F(x) is equivalent to y, so the first two equations are saying y+3 and y-3
The last two equations are saying y=x+3 and y=x-3
Answer:
see explanation
Step-by-step explanation:
Using the rules of radicals
• 
⇔ ![\sqrt[n]{(ab)^{m} }](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7B%28ab%29%5E%7Bm%7D%20%7D)
, hence
× 
= × 
= 
× ![\sqrt[6]{d^{5} }](https://tex.z-dn.net/?f=%5Csqrt%5B6%5D%7Bd%5E%7B5%7D%20%7D)
9x^2-49
It equals:
(3x+7)(3x−7)
Hope this helps!
Answer:
I and II only
Step-by-step explanation:
