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hjlf
4 years ago
6

Simplify the following expression:

Mathematics
1 answer:
Alexus [3.1K]4 years ago
5 0
Distributive property
a(b+c+d)=ab+ac+ad

-7(3e-2f+4)=-7(3e)-7(-2f)-7(4)=-21e+14f-28

now we have

-21e+14f-24+6e-2
group like terms
-21e+6e+14f-24-2
-15e+14f-26
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15 of the books for sale at a bookstore store are hardcover. If this represents 12% of all books
spin [16.1K]

The right answer is Option C.

Step-by-step explanation:

Hardcover books = 15

This represent 12% of total books.

Let,

x be the total number of books, therefore,

12% of x = 15

\frac{12}{100}*x=15\\0.12x=15

Dividing both sides by 0.12

\frac{0.12x}{0.12}=\frac{15}{0.12}\\x=125

As, 15 of them are hardcover books, the remaining will not be hardcovers;

Remaining books = Total books - hardcover books

Remaining books = 125 - 15 = 110

115 books are not hardcover.

The right answer is Option C.

Keywords: division, percentage

Learn more about percentages at:

  • brainly.com/question/8618791
  • brainly.com/question/8799684

#LearnwithBrainly

7 0
3 years ago
Draw a picture to show the Number 43
disa [49]
I dont know the answer sorry
3 0
3 years ago
Please explain step by step in full process
mafiozo [28]

Answer:

x = 120°

y = 60°

Step-by-step explanation:

✔️since, lines l and m, area parallel, therefore,

x = 120° (they are corresponding angles having matching corners. Thus, corresponding angles are congruent to each other)

✔️x + y = 180° (linear pair angles)

Plug in the value of x

120 + y = 180

Subtract 120 from each side of the equation

y = 180 - 120

y = 60°

7 0
3 years ago
Doug spent $1.05 on 0.6 pounds of apples. <br><br>a.) How much would 3 pounds of apples cost?​
Tresset [83]
1.05/0.6 = $1.75 per pound
1.75 * 3 = $5.25 for 3 pounds of apple
3 0
3 years ago
I will give brainliest, Geometry
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3 years ago
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