6900 + 8100 = 15000
15000 divided by 2 = 7500
So your answer is 7500
Answer:
(- 3, - 2 )
Step-by-step explanation:
Given the 2 equations
- 2x + 5y = - 4 → (1)
3x + 4y = - 17 → (2)
Multiplying (1) by 3 and (2) by 2 and adding the result will eliminate x
- 6x + 15y = - 12 → (3)
6x + 8y = - 34 → (4)
Add (3) and (4) term by term
(- 6x + 6x) + (15y + 8y) = (- 12 - 34), that is
23y = - 46 ( divide both sides by 23 )
y = - 2
Substitute y = - 2 in either of the 2 equations.
Substituting in (2)
3x - 8 = - 17 ( add 8 to both sides )
3x = - 9 ( divide both sides by 3 )
x = - 3
Solution is (- 3, - 2 )
Newton's Law of Cooling:
Temperature given at a time
Time
Surrounding temperature
Initial temperature
Constant (Euler's number) ≈ 2.72
Constant
Using this information, find the value of 
, to the nearest thousandth, then use the resulting equation to determine the temperature of the water cup after 4 minutes.
First, plug in the given values in the equation and solve for :
197°, 1.5 minutes, 70° and 210°
≈ 
Let the temperature of the water cup after 
minutes be 
Now, let's plug the new time and constant in the equation and solve for 
:
![x=70+{\frac{140}{\sqrt[50]{e^{13}}}\\](https://tex.z-dn.net/?f=x%3D70%2B%7B%5Cfrac%7B140%7D%7B%5Csqrt%5B50%5D%7Be%5E%7B13%7D%7D%7D%5C%5C)
≈ 
Temperature of water after 4 minutes is 178°
sorry if there's any misspelling or wrong step but I hope my answer is correct ':3
Answer:
30÷5=6.
Step-by-step explanation:
Quotient means to divide, 30÷5 is 6 since 5x6 or 6x5 is 30.
