Answer:
Step-by-step explanation:
9^(1/2) =3
this expression is : 3(r^(5/2) ×r^(-1) )(t×t^(1/2))
3r^(5/2 - 1)×t^(1+1/2)
3^(1/2)×t^(3/2)...... answer : 2
Answer:
2.99x + 12.99y = 43.92
Step-by-step explanation:
socks cost 2.99 and she bought x
2.99x
blouses cost 12.99 and she bought y
12.99y
The total is
2.99x + 12.99y
The total cost was 43.92
2.99x + 12.99y = 43.92
Answer:
The Amount after 2 
years is $8765.25
Step-by-step explanation:
Given as :
The principal loan amount = p = $7540
The rate of interest = r = 6.5%
The time period of loan = t = 2 years = 
years = 2.5 years
Let The Amount after 2.5 years = $A
Now,<u> From Simple Interest method</u>
Simple Interest = 
Or , s. i = 
Or, s.i = 
Or, s.i = 
Or, s.i = $1225.25
So, The simple interest = s.i = $1225.25
Now, Again
∵ Amount = Principal + interest
So, A = $7540 + $1225.25
∴ A = $8765.25
So, The Amount after 2 years = A = $8765.25
Hence,The Amount after 2 years is $8765.25 Answer
I think it's 21% when rounded to a whole number
Answer: she invested $2500 at the rate of 10%.
she invested $1500 at the rate of 6%.
Step-by-step explanation:
Lisa invests $x in bond A and $y in bond B.
Lisa invests $4,000 in two types of bonds, bond A and bond B. This means that
x + y = 4000
Bond A offers a 10% return, and bond B offers a 6% return. Therefore,
Interest on bond A is 0.1x
Interest on bond B is 0.06y
Her total return on the investment is $340. It means that
0.1x + 0.06y = 340
Therefore, The system of linear equations defining the situation is
x + y = 4000
0.1x + 0.06y = 340 - - - - - - - - - - -1
Substituting x = 4000 - y into equation 1, it becomes
0.1(4000 - y) + 0.06y = 340
400 - 0.1y + 0.06y = 340
- 0.1y + 0.06y = 340 - 400
- 0.04y = - 60
y = - 60/ - 0.04
y = 1500
x = 4000 - 1500
x = 2500
