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:
$157.89
Step-by-step explanation:
you could say that 150 is 95% of what the original bill was
in equation form: 150 = .95x
150/.95 = 158.89
158.89 = x
Answer:
Step-by-step explanation:
A. Milligrams
Hope this helps!
139° 10′ This is degree minutes. Convert the minutes to decimal by dividing the minutes by 60.
10/60 = 0.167
So 139° 10′ = 139.167 degrees.
Now convert to radians:
139.167 x pi/180 = 2.429 radians
The answer may be slightly different depending on the rounding of everything.
