The answer is choice A) y = 2^x - 1
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Explanation:
Note how the curve goes through (0,0). So this means that plugging in x = 0 should lead to y = 0. Let's see which choices do that for us
choice A) y = 2^x - 1 = 2^0 - 1 = 1-1 = 0
choice B) y = 2^(x - 1) = 2^(0 - 1) = 2^(-1) = 0.5
choice C) y = 2^x + 1 = 2^0 + 1 = 1+1 = 2
choice D) y = 2^(x + 1) = 2^(0 + 1) = 2^1 = 2
Only choice A has x = 0 lead to y = 0, which is why choice A is the answer
Answer: he must pay $650 interest
Step-by-step explanation:
2000 x 0.650 x 1/2 = 650
It’s just adding 19 each time
X^2 - y^2 = a
2xy = b
x^2 + y^2 = c
A polynomial identity is an equation that is always true.`1
You can relate x^2 + y^2 with x^2 - y^2 and 2xy in this ways.
1) Step 1:
[x^2 + y^2]^2 = x^4 + 2(xy)^2 + y^4 = c^2
2) Step 2:
[x^2 - y^2] = x^4 - 2(xy)^2 + y^2 = a^2
(2xy)^2 = 4(xy)^2 = b^2
x^4 - 2(xy)^2 + y^2 + (2xy)^2 = x^4 + 2(xy)^2 + y^2
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↓ ↓ ↓
a^2 b^2 = c^2
Answer: the identity is
c^2 = a^2 + b^2 equivalent to
(x^2 + y^2)^2 = (x^2 - y^2)^2 + (2xy)^2
Answer:
The numerical expression is simplified into 8.
Step-by-step explanation:
You have to use the P.E.M.D.A.S. formula.
16-8[(3+6)÷9]
Solve the brackets(parenthesis) first.
Inside the brackets, you have to use the P.E.M.D.A.S. formula once again, as if it was a different equation.
16-8[(9)÷9]
Once you've found the solution to the equation 3+6 inside the parenthesis, you divide it by 9.
16-8[1]
Then, since there are no exponents, you multiply.
16-8
Then you subtract.
8
