Answer:
53.13
Step-by-step explanation:
cos^-1(54/90)
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Answer:
The answer is 350.
Step-by-step explanation:
The joint variation of W with x, y and z may be expressed as follow, W = kxy / z²where k is the constant of variation. Substituting the first set of values for the variables, 280 = k(30)(12) / 3²The value of k from the equation is 7. Substituting to the same equation the values of the next set of variables, w = (7)(20)(10) / 2² = 350
Answer:
The possible values of x in the given expression is D. - 4 and 4