Sue has saved $54 more than Bill
Step-by-step explanation:
Given
Sue saves $5 a week. so after 36 weeks he will have
= 36 * 5
= $180
Bill's saving is modeled by
m = 3.5w where w is the number of weeks
After 36 weeks,
The difference between savings of Bill and Sue
Hence,
Sue has saved $54 more than Bill
Keywords: Equations, variables
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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
------------------------ ---------- --------------------------
↓ ↓ ↓
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:
It's D
Step-by-step explanation:
Answer:
Hi there!
THE CORRECT ANSWER IS 14
Step-by-step explanation:
NO EXPLANATION
Answer:
Positive real
Step-by-step explanation:
on edge
