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lys-0071 [83]
3 years ago
13

What's the value? A.-20 B.-4 C.4 D.20

Mathematics
2 answers:
Vlad1618 [11]3 years ago
6 0

Answer:

\boxed{-4}

Step-by-step explanation:

(4-2)^3-3 \times 4

Brackets or parenthesis are to be evaluated first. Subtract the numbers in the brackets.

(2)^3-3 \times 4

Evaluate the power or exponent.

8-3 \times 4

Multiply the numbers.

8-12

Finally, subtract the numbers.

=-4

ale4655 [162]3 years ago
4 0

Answer:

<h2>-4</h2>

Option B is the correct option.

Step-by-step explanation:

{(4 - 2)}^{3}  - 3 \times 4

Subtract the numbers

=  {(2)}^{3 } - 3 \times 4

Multiply the numbers

=  {(2)}^{3}  - 12

Evaluate the power

= 8 - 12

Calculate the difference

=  - 4

Hope this helps..

Best regards!!

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Consider the functions below.<br> f(x) = x² - 6x - 27<br> g(x) = x - 9
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Correct answer: 1) (f/g)(x)

Solution: f(x)=x^2-6x-27=(x+3)(x-9)

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Answer:

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Step-by-step explanation:

5 0
3 years ago
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
Whats the answer to 2c + 9 = 27
Inessa05 [86]

Ans

c=9

Step-by-step explanation:

2 x 9 = 18 +9 = 27

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c

Step-by-step explanation:

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