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2 years ago

Help anyone please . !!!!

Mathematics

1 answer:

vlabodo [156]2 years ago

8 0

⇒The answer to the first question would be $69.75.

⇒The answer to the 2nd question would be $36.48.

⇒The answer to the 3rd question would be $42.7.

Here's how to get them:

For question 1: A 55% markup for $45 ⇒1.55*45⇒69.75

For question 2: A 60% markup for $22.8⇒ 1.6*22.8⇒36.48

For question 3: A 40% markup for $30.50⇒1.4*30.50⇒42.7

Small Explanation: The reason why there should be a 1 in front of the decimal (which is the percent, but in decimal form) is because by not adding that number 1 in front of the decimal, you will have to do an extra step.

Anyway, hope this helped! :-)

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sineoko [7]

Answer:

7/ Ans;

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9/Ans;

$\frac{ {x}^{2} - 9}{ {x}^{2} - 6x + 9} \div \frac{x + 4}{x - 3} \\ \\ \frac{ {x}^{2} - 9 }{ {x}^{2} - 6x + 9} \times \frac{x - 3}{x + 4} \\ \\ \\ \frac{(x + 3)(x - 3)}{(x - 3)(x - 3)} \times \frac{x - 3}{x + 4} \\ \\ \\ = \frac{(x + 3)}{1} \times \frac{1}{(x + 4)} \\ \\ \\ = \frac{x + 3}{x + 4}$

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In the two questions, we first replace the division with multiplication with flipping the fraction after the division sign, secondly we analyze any equation that needs analysis to simplify it, thirdly, to simplify the fraction by deleting the numerator and the similar denominator .

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2 years ago

Prove using the notion of without loss of generality that 5x 5y is an odd integer when x and y are integers of opposite parity.

kap26 [50]

The expression is
5x + 5y
We are to prove that it is an odd integer when x and y are integers of opposite parity
First, we can assume
x = 2a (even)
y = 2b + 1(odd)
subsituting
10(a + b) + 5
5 [(2(a + b) + 1]
The term
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3 years ago

Please Help!! I will give brainliest The question is attached below

Rina8888 [55]

Answer:

Step-by-step explanation:

P(x) = $\frac{2}{3x-1}$

Q(x) = $\frac{6}{-3x+2}$

P(x) × Q(x) = $\frac{2}{3x-1}\times \frac{6}{-3x+2}$

= $\frac{2\times 6}{(3x-1)(-3x+2)}$

= $\frac{12}{(3x-1)(-3x+2)}$

P(x) ÷ Q(x) = $\frac{2}{(3x-1)}$ ÷ $\frac{6}{(-3x+2)}$

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2 years ago

Given J(1, 1), K(3, 1), L(3, -4), and M(1, -4) and that J'(-1, 5), K'(1, 5), L'(1, 0), and M'(-1, 0). What is the rule that tran

anastassius [24]

(x; y) -> (x - 2; y + 4)

J(1; 1) ⇒ J'(1 - 2; 1 + 4) = (-1; 5)

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2 years ago

Cary is 4 years older than Dan. In 7 years the sum of their ages will be 76

bekas [8.4K]

Ages of Dan and Cary are 29 and 33 respectively.

Step-by-step explanation:

Step 1:

Form equations out of the given details. Let the age of Dan be x, then age of Cary is x + 4.

In 7 years, sum of their ages = 76

⇒ (x + 7) + (x + 4 + 7) = 76

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Step 2:

Calculate age of Cary.

⇒ x + 4 = 33

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2 years ago