1.y varies directly with x
2.substitute the value of x and y in the equation below
y=kx
where k is the constant term
60=20k
k=60\20
k=30
:y=30x.....is the law
To find y when x is 12
You reinstate the law which is y=30x
Then substitutes the value of x to determine y
y=30*12
y=36.
Answer:
x = -15
Step-by-step explanation:
7 + (2/5)x = 1
First, divide two by five to get 0.4, then substitute in the choices given (remembering that you must also add seven afterward).
0.4*-15 = -6 -6 + 7 = 1 = 1
And there you have it!
*It is important to double check your answer by testing other numbers as well.
Answer:
Cos C = adjecent/hypotenuse
Cos C = 14/50
divide the numerator and the denominator by 2
Cos C = 7/25
The answer is C
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