If two line are perpendicular. The multiply of their slopes are equal to -1.
First line's slope is: -1/2x because if the line equation is form of y=ax+b a is slope.
Let say second line's slope is m
m.-1/2=-1 so m=2
y=ax+b is general form of linear function/equation. (a=slope)
y=2x+b
If this line passes through the point (2,-2),if we write -2 to y and 2 to x, the equation becomes true.
-2=4+b
b=-6
Thus,
y=2x-6 is true answer.
Answer:
43.407 years
Step-by-step explanation:
Zoe invest $600 in college savings account. The account earns 5.7% interest compounded quarterly. How many years will it take for Zoe's account to reach $7,000?
We are asked to find time t in a compound interest formula
The formula is given as:
t = log(A/P) / n[log(1 + r/n)]
A = Total amount = $7000
P = Principal = $600
n = number of times interest is compounded = Quarterly =4
r = Interest rate = 5.7% = 0.057
Hence,
t = log(7000/600) /4[log (1 + 0.057/4)]
t = 43.407 years
If your meal costs $14 and you wish to leave a 20% tip, you can find the total amount to pay by mult. $14 by 1.20:
1.20($14) = $16.80. The tip would be $2.80.
<span>$8.50 shorts;6.5% markup: 1.065($8.50) = $9.05 total due.</span>
I think the principal is 2,377.18. Principal is what you wanted correct?
-------------------
−x * 2 < 4
-2x < 4
x > -4/2
x > -2
-------------------
-------------------
-x² < 4 has no solutions
-------------------
