Answer:
y=x-1/y
Step-by-step explanation:
x=2y+1
x-1=2y
y=x-1/y
Answer:
2x + 3y = 4 =
−3/2
y+2
-2x + 5y = 60 =
5/2
y−30
Step-by-step explanation:
Answer: Sin0 = 8/8.5
Step-by-step explanation: What we have is a right angled triangle, with two sides given and one angle which is the reference angle (unknown angle).
The Sine of the angle is calculated as
Sin0 = opposite/hypotenuse
We have the opposite side (facing the reference angle) as 8 units and the hypotenuse (facing the right angle unknown), which we shall label as X.
To calculate the hypotenuse, we shall apply the Pythagoras theorem which is,
X² = 3² + 8²
X² = 9 + 64
X² = 73
Adding the square root sign to both sides of the equation, we now have
X = √73
X = 8.5 (approximately)
Now that we have the hypotenuse as 8.5, the Sine of the angle can now be calculated as
Sin0 = opposite/hypotenuse
Sin0 = 8/8.5
Answer:
She will have $2792 at the end of her four year investment
Step-by-step explanation:
The compound interest formula is given by:
Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.
Gift of $2500:
This means that 
She shopped around and found a 4 year GIC investment that earns 2.8% interest annually.
This means that 
.
How much will Anna have at the end of her four year investment?
This is A(4). So
She will have $2792 at the end of her four year investment
Answer:
If you end up with 0=0 that indicates that both of the equations are for the same line, meaning there infinite solutions.
