Solution:
Let:
To get the value of x, we add the Equation 1 and 2.
13x = -21 - 6y
+ - 8x = 36 + 6y
We will get:
5x=15
Calculate:
x= 3
Since x= 3, we plug in what we know:
13x = -21 - 6y
13(3) = -21 - 6y
39 = -21 - 6y
Simplify and rearrange:
-6y = 39 + 21
-6y= 60
Calculate:
y= -10
Therefore, the values are x= 3, y= -10 or (3,-10).
Answer:
The missing exponent is 4
Step-by-step explanation:
Let
Then we rewrite the LHS in scientific notation to get;
This implies that,
By comparison, we find n=4.
Therefore the missing exponent is 4
Answer:
a.
b.
c.
d.
Step-by-step explanation:
a) xy' -4y = 2 x^6
b) y' - 5y = 4e^7x
c) dy/dx + 2y = 2/(1+e^4x)
d) 1/2 di/dt + i = 4cos(3t)