Answer:
7 %
Step-by-step explanation:
- i do not know if you use this but I use S.I=P×R/100×T
- S.I=840
- P for principal(the money you borrow or lend) =6000
- T for time=2 years.
- R for rate=???
- In order to find out the rate, you need to substitute all these numbers into their respective places.
- 840=6000×r/100×2
- 6000/100=60
- 840=60×r×2
- 840=120r
- r=7%
Answer:
Substitution method can be used
Step-by-step explanation:
Given the system of equations
y = 2x-1 ....1
-12x + 3y = 9 ....2
The best method to use id the substitution method
Substitute equation 1 into 2;
From 2;
-12x + 3y = 9
-4x + y = 3
-4x + 2x-1 = 3
-2x -1 = 3
-2x = 3+1
-2X = 4
x = -4/2
x = -2
Substitute x = -2 into 1
y = 2x - 1
y = 2(-2)-1
y = -4-1
y = -5
Hence the solution to the system of equation is (-2, -5)
Answer:
4 miles per hour
Step-by-step explanation:
We can divide 45 minutes by 3 to get 15 minutes:
So that is 1 mile in 15 mins
Then we multiply both sides by 4 to get 60 mins:
4 miles in 60 mins
So his rate was 4 miles per hour
First let's calculate the profit in the deal, subtracting the market value and the selling value:
So the profit is $55,000.
Now, calculating the fee of 10% of the profit, we have:
So the fee is $5,500, therefore the correct option is the fourth one.
Answer:
BC = 25
Step-by-step explanation:
Since AB = AC, then substituting values gives
4x + 1 = 2x + 23 ( subtract 2x from both sides )
2x + 1 = 23 ( subtract 1 from both sides )
2x = 22 ( divide both sides by 2 )
x = 11
Hence
BC = 3x - 8 = (3 × 11) - 8 = 33 - 8 = 25
