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mart [117]
3 years ago
12

WILL MARK BRAINLIEST IF ANSWER IS CORRECT

Mathematics
1 answer:
crimeas [40]3 years ago
6 0
The last set (choice D) is a subset of given set B.

The other 3 choices are wrong.
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Guo Qi watches 151515 videos on Khan Academy every day. Each video is 888 minutes long on average. For how many days does Guo Qi
lozanna [386]

Answer:

Guo Qi requires 75 days to watch videos on Khan Academy.

Step-by-step explanation:

We are given the following in the question:

Number of videos watched by Guo Qi each day = 15

Average length of each video = 8 minutes

Total minutes of video = 9000 minutes

Total number of videos to be watched =

=\dfrac{\text{Total minutes}}{\text{Average length of video}}\\\\=\dfrac{9000}{8}=1125

Guo Qi needs to watch 1125 videos.

Number of days required =

=\dfrac{\text{Total number of videos}}{\text{Videos watched in one day}}\\\\=\dfrac{1125}{15}=75

Guo Qi requires 75 days to watch videos on Khan Academy.

6 0
2 years ago
Which function is the inverse of f(x)= 3x+5 over 7
Pani-rosa [81]

f(x) = (3x+5)/7

Step 1:

we write f(x) as y

y=(3x+5)/7

Step 2:

switch y by x and x by y

x=(3y+5)/7

Step 3:

solve for y,

x=(3y+5)/7

multiply both sides by 7

7x=3y+5

subtract 5 from left side

3y=7x-5

divide both sides by 3

y= (7x-5)/3

f⁻¹ (x) =(7x-5)/3

8 0
3 years ago
Please help me out on this :(( struggling !
Yuki888 [10]

Answer:

answer is B

Step-by-step explanation:

step by step explanation

3 0
3 years ago
I need help with this please
KatRina [158]

Answer: a) 12

Step-by-step explanation: anything with parentheses means times (×)

5 0
3 years ago
Which represents the inverse of the function f(x)=4x​
Galina-37 [17]
F-1(x)=x/4 represents the inverse function because to find the inverse you have to interchange the variables & solve for y
6 0
3 years ago
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