Let x be the amount he invests at 6%
1280 = 0.06x + 0.07(20000 - x)
1280 = 0.06x + 1400 - 0.07x
1280 - 1400 = -0.01x
-120 / -0.01 = x
x = 12000
Therefore, he invests $12,000 at 6% and $8,000 at 7%
Answer:
8.5
Step-by-step explanation:
d = √[(-7+1)²+(-1-5)²]
= √[(-6)²+(-6)²]
=√(36+36)
=√72
= 8.5
Answer:
$6539
Step-by-step explanation:
52x 125.75 (52 weeks in a year)
= 6539
138.72 - 45.23 - 18
These are the check costs that subtracted from her bank account
75.49 is what you get
A deposit is when you add money to your account, so, you add 75.85
75.49 + 75.85 = $151.34
Answer:
x^15
Step-by-step explanation:
x^3 * x^2 (x^3)^2 x^6
-------------------------------
x^2
First I will use the power of powers x^a^b = x^(a*b)
x^3 * x^2 x^(3*2) x^6
-------------------------------
x^2
x^3 * x^2 x^(6) x^6
-------------------------------
x^2
Next we will use the multiplication rule x^a * x^b = x^(a+b)
x^(3 +2+6+6)
-------------------------------
x^2
x^(17)
-------------------------------
x^2
Next we will use quotient rule x^a / x^b = x^(a-b)
x^(17 -2)
x^15
