HELPPPPPPPPP!
2 answers:
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Hello,
1)
I suppose we must write correcty and corrects the mistakes!
f(x)=x+3
y=x+3
->x=y+3 exchange x and y
->y=x-3 solve for y
f^(-1)(x)=x-3=g(x)
Here are the mistakes:
(fog)(x)=f(g(x))=f(x-3)=(x-3)+3=x and not -x !
(gof)(x)=g(f(x))=g(x+3)=(x+3)-3=x and not -x!!
f(x) and g(x) ARE inverses each another.
2)
f(x)=1/(4x) x≠0
y=1/(4x)
->x=1/(4y)
->y=1/(4x)
g(x)=f^(-1)(x)=1/(4x)=f(x), x≠0
1)
I suppose we must write correcty and corrects the mistakes!
f(x)=x+3
y=x+3
->x=y+3 exchange x and y
->y=x-3 solve for y
f^(-1)(x)=x-3=g(x)
Here are the mistakes:
(fog)(x)=f(g(x))=f(x-3)=(x-3)+3=x and not -x !
(gof)(x)=g(f(x))=g(x+3)=(x+3)-3=x and not -x!!
f(x) and g(x) ARE inverses each another.
2)
f(x)=1/(4x) x≠0
y=1/(4x)
->x=1/(4y)
->y=1/(4x)
g(x)=f^(-1)(x)=1/(4x)=f(x), x≠0
Answer:
28 white strands , 20 blue strands and 32 red strands are needed to make a pair of pom-poms
Step-by-step explanation:
Given :A pom-pom manufacturer makes each of its pom-poms with 35% white strands (w), 25% blue strands (b), and 40% red strands (r).
To Find : If each pom-pom has a total of 80 strands, how many of strands of each color are needed to make a pair of pom-poms?
Solution:
Total Strands = 80
White Strands = 35%
No. of white strands =
Blue Strands = 25%
No. of blue strands =
Red Strands = 40%
No. of Red strands =
Hence 28 white strands , 20 blue strands and 32 red strands are needed to make a pair of pom-poms
Answer
93 boxes
Step-by-step explanation:
Week one= 3 boxes
Week two= 2×3=6 boxes
Week three= 2×6=12 boxes
Week four= 2×12=24 boxes
Week five= 2×24=48 boxes
Total number of boxes sold is the sum for boxes sold in week 1,2,3,4 and 5