saraderrico
16.10.2020 •
Mathematics
Which of the following problems can be solved using the equation below?
x+15=2x
Lisa is twice as old as she was 15 years ago. How old is Lisa now?
In 15 years Rosa will be twice as old as she is now. How old is Rosa now?
Alexa is twice as old as she will be 15 years from now. How old is Alexa now?
When Fiona is 15 years old, she will be twice as old as she is now. How old is Fiona now?
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Ответ:
A scale factor is usually a decimal which scales, or multiplies, some quantity. In the equation y = Cx, C is the scale factor for x. C is also the coefficient of x, and may be called the constant of proportionality of y to x.