You can set up an system of equations
x=2y+8
x-y=25
Substitute x in to the second equation
2y+8-y=25
y+8=25
y=17
Substitute the y back in to the first equation.
x=2(17)+8=42
The formula is
I=prt
I interest earned 2800
P amount deposited. ?
R interest rate 0.045
T time 4.5 years
Solve the formula for p by dividing both sides by rt to get
P=I/rt
P=2,800÷(0.045×4.5)
P=13,827.16 round your answer to get 13827
Hope it helps!
Answer:
y>0
Step-by-step explanation:
This is because no matter what x-value you enter, the fact that it's an even exponent will make the y-value always positive. And regardless of the 4 in the exponent, you can still have values less than 4 (but still positive).
{-4x+7y+5=-5
{0x-3y=-5 Solve the equation.
{-4x+7y+5=-5
{y=5/3 Substitute the value of y.
-4x+7(5/3)+5=-5 Plug in and solve.
x=65/12 You should get this answer.
Therefore: (x,y) = (65/12,5/3)
Answer:
Surface area ~ 197.33
<em>Hope that helps!</em>
Step-by-step explanation:
