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Dafna11 [192]
3 years ago
8

The librarian noticed that 60% of seventh graders checked out fantacy books. About how many of 240 seventh graders would check o

ut fantacy books? Plzz help
Mathematics
1 answer:
ehidna [41]3 years ago
4 0

Answer:

The correct answer is 144.

Step-by-step explanation:

The librarian noticed that 60% of total seventh graders checked out fantasy books from the library.

Total number of seventh graders is given to be 240.

Number of seventh grade students who checked out fantasy books = 60% of 240 = 0.6 × 240 = 144.

Thus out of 240 seventh graders 144 of them would check out  a fantasy book from the library.

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For f(x)=2x+1 and g(x)=x^2-7, find (f.g)(x)
hram777 [196]

Option C (in the figure) is correct.

Step-by-step explanation:

We need to find (f.g)(x)

Given that f(x)=2x+1\\g(x)= x^2-7

Now finding (f.g)(x)

(f.g)(x)= f(x).g(x)

(f.g)(x)= (2x+1)(x^2-7)\\(f.g)(x)=2x(x^2-7)+1(x^2-7)\\(f.g)(x)=2x^3-14x+x^2-7\\(f.g)(x)=2x^3+x^2-14x-7

So, (f.g)(x)=2x^3+x^2-14x-7

Option C (in the figure) is correct.

Learn more about Composite Functions at:

brainly.com/question/10772025

brainly.com/question/10541435

Keywords: Composite function

#learnwithBrainly

8 0
3 years ago
(09.02)
Ivenika [448]

Answer:

4th option

Step-by-step explanation:

x² - 2x - 3 = 0 ( add 3 to both sides )

x² - 2x = 3

using the method of completing the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 1)x + 1 = 3 + 1

(x - 1)² = 4

4 0
2 years ago
Number 5555555555555
bogdanovich [222]
The correct answer is B
8 0
3 years ago
Melissa can buy an 8 pound bag of dog food for $7.20. What is the cost of 1 pound? PLZZ I REALLY NEED HELP!
Furkat [3]

Answer:

$0.90

Step-by-step explanation:

7.20/8 = $0.90

6 0
2 years ago
☆+☆+☆=18<br>♡+♡+☆=14<br>♤+♤+♡=2<br>♡+♤+☆☆=<br><br>Genius only look closely at the details ​
Dmitriy789 [7]

Answer:

15

Step-by-step explanation:

3 stars = 18

1 star = 6

14-6=8/2 = 4

1 heart = 4

1 spade = -1

4 + -1=  3

3 + (2 stars)

3 + 12 = 15

5 0
3 years ago
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