Sam needs to find the circumference of a circle with a diameter of 24 inches. He uses a calculator to find the circumference. Wh
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Answer and Step-by-step explanation:
First, you need to make the function to represent the information given.
We start with 70,000 in the account, and have an interest rate of 6.2%.
We want to know how long it will take to get $223,200.
The equation for simple interest is:
A =
Where A is the total amount, P is the principle amount of money, r is the rate, and t is the time.
Now, we plug in the values and solve for t.
t = 0.353
Multiply by 100 to get the years.
t = 35.3
So, it will take Allison 35.3 years to get 70,000 dollars to 223,200 dollar with an interest rate of 6.2%
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The two linear equations in two variable is:
12 x + 3 y = 40
7 x - 4 y = 38
(a) For a system of equations in two Variable
a x + by = c
p x + q y = r
It will have unique solution , when
As, you can see that in the two equation Provided above
So, we can say the system of equation given here has unique solution.
(b). If point (2.5, -3.4) satisfies both the equations, then it will be solution of the system of equation, otherwise not.
1. 12 x+3 y=40
2. 7 x-4 y=38
Substituting , x= 2.5 , and y= -3.4 in equation (1) and (2),
L.H.S of Equation (1)= 1 2 × 2.5 + 3 × (-3.4)
= 30 -10.20
= 19.80≠ R.H.S that is 40.
Similarly, L H S of equation (2)= 7 × (2.5) - 4 × (-3.4)
= 17.5 +13.6
= 31.1≠R HS that is 38
So, you can Write with 100 % confidence that point (2.5, -3.4) is not a solution of this system of the equation.