I like changing things into decimals, so 7.25-2.75. For the moment, pretend the decimal isn’t there and the equation is 725-275. That equals 450. Now we put the decimal back, so since it is subtraction you keep the decimal in the same place (two spots away from the end). So the answer is 4.5.
Answer:
Because 20 has to be doubled to become 40. While 40 is twice as much as 20 so you just divide 40 by 20 to get 50%.
Explanation:
20 x 20 = 40 = 100%
40 / 20 = 50%
Answer:
1). = (200 - )
2). Inverse function represents the age of the client and 'x' represents the maximum heart rate of the client.
Step-by-step explanation:
Function representing the maximum heart rate is,
f(x) = 0.85(220 - x)
Here x = age of the client
Equation form of the function will be,
y = 0.85(220 - x)
To get the inverse of the given function, replace 'x' by 'y' and 'y' by 'x' and solve for y.
x = 0.85(220 - y)
220 - y =
y = 220 -
Now convert this equation into a function.
= (200 - )
Here inverse function represents the age of the client and 'x' represents the maximum heart rate of the client.
Answer:
$16
Step-by-step explanation:
if 5=20 then 20÷5=4 and 4x4=16