Answer:
D
Step-by-step explanation:
Given the 2 equations
4x - 5y = 18 → (1)
3x - 2y = 10 → (2)
Multiplying (1) by 3 and (2) by - 4, then adding will eliminate the x- term
12x - 15y = 54 → (3)
- 12x + 8y = - 40 → (4)
Add (3) and (4) term by term to eliminate x, that is
- 7y = 14 ( divide both sides by - 7 )
y = - 2
Substitute y = - 2 into either of the 2 equations and solve for x
Substituting into (1)
4x - 5(- 2) = 18
4x + 10 = 18 ( subtract 10 from both sides )
4x = 8 ( divide both sides by 4 )
x = 2
solution is (2, - 2 ) → D
Hey there!
Firstly, you need combine your like terms
stays the SAME 
- Combine the negative and the plus and make a negative symbol
Good luck on your assignment and enjoy your day!
~
In order to determine the probability that the coin chosen is a dime, determine first the total number of sample coins. In this problem, there are 52 coins all in all. Next, divide the number of dimes in the sample with the total number of coins. This gives us 10/52. Simplifying the fraction further yields to 5/26. Thus, the probability that the coin chosen is dime is 5/26. The answer is letter c.
Answer:
Principle for account B is greater.
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Step-by-step explanation:
First of all, let us have a look at the formula for Simple Interest:
Where 
is the principle amount
is the Rate of interest per annum
is the time in years.
Time = 21 months = 
Let the Principles be 
.
Using the formula for Simple Interest, we get:
Therefore, <em>principle for account B is greater</em>.
