Answer: pi/4 and -1
Step-by-step explanation:
So the difference between 45 and 10 is..
35 (omygad)
You have to divide 35/5 to get the average drop in the temperature PER HOUR, meaning 7 degrees per hour.
From the system of equations, we have 3 unknowns and 3 equations. Therefore, it can be solved.
<span>3x - 2y + 2z = 30 (1)
</span><span>-x + 3y - 4z = -33 (2)
</span><span>2x - 4y + 3z = 42 (3)
We can write equation 2 x as a function of y and z and substitute the new equation to the other equations.
</span>x =3y - 4z + 33 (2)
3 (3y - 4z + 3)<span> - 2y + 2z = 30 (1)
</span>2 (3y - 4z + <span>3)</span> - 4y + 3z = 42 (3)
We simplify and solve the equations and we get values,
x = 4
y = -7
z = 2
Answer:
528
Step-by-step explanation:
(80:100)*660 =
(80*660):100 =
52800:100 = 528
Now we have: 80 percent of 660 = 528
Total cost = price per kilogram• how many kilograms were purcest
t= p•k
t= 1.13•k
