Answer:
x=-21
Step-by-step explanation:
-3(x-8)=87
-3x+24=87
-3x=63
x=-21
It's incorrect. There are 6 moles of NaBr produced for every 3 moles of Na₂S among the reactants (as well as 2 moles of FeBr₃), so the mole ratio of NaBr to Na₂S should be 2 : 1, not 1 : 1.
Answer:
1. 25 us cents
2. 175
3. 4 us dollars
4. 60
5. your grade is 78%
(other 5) jasmine saved 27 dollars
6. 6 cents
7. 15 dollars
8. 12 dollars
9. 26.75
10. 64%
Answer:
a. P= 5000( 1.016)^x
b. $ 6344.18
Step-by-step explanation:
The equation for finding the compound interest annually is
P = P_1 ( 1 +r)^t
Here
P = the amount after the interest has been added or the new balance
P_1= the principal amount
r= rate at which interest is charged
t= time in years
So we have
P = the new balance
P_1= the principal amount= $ 5000
r= rate at which interest is charged= 1.6 %
t= time in years= x
Putting the values in the above equation
P = P_1 ( 1 +r)^t
P = 5000 ( 1+ 1.6/100) ^x
P= 5000( 1.016)^x
b) When t= 15
Again
Putting the values in the above equation
P = P_1 ( 1 +r)^t
P = 5000 ( 1+ 1.6/100)^15
P = 5000( 1.26883637) = 6344.18185= $ 6344.18