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lions [1.4K]
3 years ago
12

Hey guys 25 points and brainliest!

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
6 0

Answer:

9.1 = a + 4

Step-by-step explanation:

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Use the zero product property to find the solutions to the equation x2 – 15x – 100 = 0.
IrinaK [193]

Answer:

x= 20      x =-5

Step-by-step explanation:

x^2 – 15x – 100 = 0.

What two numbers multiply to -100 and add to -15

-20 * 5 = -100

-20 +5 = -15

(x-20) (x+5) =0

Using the zero product property

x-20 =0     x+5 = 0

x= 20      x =-5

7 0
3 years ago
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You buy books for 64 cents each, you plan to sell them for 75 cents each. You're left with 100 unsold books, and you lost $12. H
PSYCHO15rus [73]

The number of books sold is 473.

<u>Step-by-step explanation:</u>

  • The original cost of each book = $0.64
  • The selling price of each book = $0.75

The difference between the original price and selling price of the book gives the profit per book.

The profit of one book = Selling price - Original price

Let,

  • The total number of books be 'x'.
  • The number of books sold be 'y'.
  • The unsold books is 100.
  • The total profit is -12 because it was gone to a loss of $12.

Therefore, the equation is formed as

total Profit = 0.75y - 0.64x

⇒ 0.75y - 0.64x = -12 --------(1)

Total books = sold books + unsold books

x = y + 100

⇒ x-y = 100  -------(2)

Substitute x= 100+y in the eq(1),

0.75y - 0.64(100+y) = -12

0.75y - 64 -0.64y = -12

0.11y = -12 +64

y = 52 / 0.11

y = 472.7

y ≅ 473

The number of book sold is 473 books.

The total number of books is (100+473) = 573 books.

8 0
3 years ago
What is the measure of.....
BartSMP [9]
Idk but I think 42
Maybe
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3 years ago
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What does the word hypersensitive mean in the sentence below
Sonbull [250]

Answer:

abnormally or excessively sensitive, either psychologically or in physical response. / Extremely sensitive  

Step-by-step explanation: Definition of hypersensitive: abnormally or excessively sensitive, either psychologically or in physical response.

4 0
3 years ago
Chris found some colorful leaves under one tree. Under another tree, he
Lynna [10]

Answer:

x+y-3+6

or

x+y+3

5 0
3 years ago
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