Answer:
16
Step-by-step explanation:
(4)3+4=16
Answer: Let x=length of the longest side of the smaller triangle.
x/20=3/12
x=60/12
x=5
Answer:
in a 140 meter spool there are 31 1/9 times 4 1/2 meters of ribbon
Step-by-step explanation:
To find out how many 4 1/2 meters of ribbon are there in a 140 meter spool, divide 140 meter by 4 1/2 meter, but first convert mixed number to an improper fraction


Convert to mixed number

therefore
in a 140 meter spool there are 31 1/9 times 4 1/2 meters of ribbon
The inverse of the function given will be:
f(x)=(x-7)^(1/3)
to get the inverse we make x the subject
let f(x)=y=(x-7)^(1/3)
y=(x-7)^(1/3)
getting the cube of both sides we have:
y³=[(x-7)^(1/3)]³
y³=x-7
thus
x=y³+7
next we replace y by x and x with f^-1(x)
thus the inverse will be:
f^-1(x)=x³+7
Yes they do have the same number of zeros