Answer: 501, 511
Step-by-step explanation:
You add ten so 491 plus 10 would 501.
If y varies inversely as x, then we write it as:
y = k/x
where k is some constant.
If we multiply both sides of this equation by x we get an equation for k:
k = x*y
We are given that y=4 when x=7, therefore:
k = 7*4 = 28
Put this back into our original equation to get:
y = 28/x
Answer:
x = 3.431
Step-by-step explanation:
Given equation is,
By taking log on both the sides of the equation,
(3x - 9)log5 = log8
3x - 9 =
3x - 9 = 1.292
3x = 9 + 1.292
x =
x = 3.4306
x ≈ 3.431
Answer: see below
<u>Step-by-step explanation:</u>
Input x = 13, y = 84, r = 85 into the trig functions: