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Scilla [17]
3 years ago
5

What are some situations in which estimating a sum or difference is useful? Why is it useful in these situations?

Mathematics
2 answers:
Setler [38]3 years ago
4 0
What exactly are these situations can you tell me and maybe I could help you out.
Ahat [919]3 years ago
4 0
Suppose I am in a store buying a shirt, a tie, and slacks. Each of the prices ends in 99 cents, and it is hard to add the exact amounts in my head. I can make an estimate, and decide if this is too much to spend or not.
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2 years ago
A curve is given by the parametric equations x = cos 2t * a * n * d * y = sin t , then the cartesian equation of the curve is gi
Dafna11 [192]

Answer:

Y² = (1-X) / 2

Step-by-step explanation:

According To The Question, We Have

X= Cos2t  &   Y= Sint

the cartesian equation of the curve is given by Y² = (1-X) / 2 .

Proof, Put The Value of X & Y in Cartesian Equation, We get

Sin²t = {1-(1-2×Sin²t)} / 2         [∴ Cos2t = 1 - 2×Sin²t]

Taking R.H.S

  • (1-1+2×Sin²t)/2
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8 0
3 years ago
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