Answer:
<h3>The answer is option A</h3>
Step-by-step explanation:
f(x) = (x+1)³ + 4
To find f-¹(x) equate f(x) to y
That's
y = (x+1)³ + 4
Next interchange the terms x becomes y and y becomes x
That's
x = ( y+1)³ + 4
Make y the subject
(y+1)³ = x - 4
Find the cube root of both sides
That's
Send 1 to the right side of the equation
That's
So we have the final answer as
Hope this helps you
Answer:
C=5h+3 when h=5
C=28
Step-by-step explanation:
She charges $5 per hour (5h)
and a flat fee of $3 (+3).
Replace the h (the number of hours babysitting) with 5 (the amount of hours you want to find for).
Then you multiple 5 and 5, then add 3.
Which gives you an answer of $28.
Hope this helped!
Answer:
b
Step-by-step explanation:
probability that the persons IQ falls between 110 and 130 is 0.2286 .
<u>Step-by-step explanation:</u>
Step 1: Sketch the curve.
The probability that 110<X<130 is equal to the blue area under the curve.
Step 2:
Since μ=100 and σ=15 we have:
P ( 110 < X < 130 )=P ( 110−100 < X−μ < 130−100 )
⇒ P ( (110−100)/15< (X−μ)/σ<(130−100)/15)
Since Z = (x−μ)/σ , (110−100)/15 = 0.67 and (130−100)/15 = 2 we have:
P ( 110<X<130 ) = P ( 0.67<Z<2 )
Step 3: Use the standard normal table to conclude that:
P ( 0.67<Z<2 )=0.2286
Therefore, probability that the persons IQ falls between 110 and 130 is 0.2286 .