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2 years ago

Anyone please help me hurry ????

Mathematics

2 answers:

Sergeu [11.5K]2 years ago

7 0

Answer:

No, She is not correct.

Step-by-step explanation:

A reflection across the Y axis changes the X value.

If you look at point B and point B prime, the coordinates dont change at all. Which makes this incorrect, I believe.

Tcecarenko [31]2 years ago

6 0

She is not correct.

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a rectangle has a length of x3y4 inches and a width of xy7 inches . Which expression represents the ratio of the length of the r

Oxana [17]

Answer:

A. x²/y³

Step-by-step explanation:

Given the following data;

Length = x³y⁴

Width = $xy^{7}$

Ratio = length/width

$Ratio = \frac{x^{3}y^{4}}{xy{^7}}$

Simplifying the equation by applying the law of indices (division), we have;

$\frac{x^{3}}{x} = x^{3} - x^{1} = x^{3-1} = x^{2}$

$\frac{y^{4}}{y^{7}} = y^{4} - y^{7} = y^{4-7} = y^{-3}$

Hence, rearranging the above values;

$Ratio = \frac{x^{2}}{y^{3}}$

Therefore, the expression that represents the ratio of the length of the rectangle to the width of the rectangle is A. x²/y³.

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3 years ago

Benjamin wants to buy a video game that costs $24, but he only wants to spend 40% of his savings. How much must Benjamin save in

Snowcat [4.5K]

Answer:

$14.4

Step-by-step explanation:

I don't quite understand this question, but this is what I think

4 0

3 years ago

Exercise 2.4.2: Proving statements about rational numbers with direct proofs. About Prove each of the following statements using

IgorLugansk [536]

Answer:

See Explanation

Step-by-step explanation:

(a) Proof: Product of two rational numbers

Using direct proofs.

Let the two rational numbers be A and B.

Such that:

$A = \frac{1}{2}$

$B = \frac{2}{3}$

The product:

$A * B = \frac{1}{2} * \frac{2}{3}$

$A * B = \frac{1}{1} * \frac{1}{3}$

$A * B = 1 * \frac{1}{3}$

$A * B = \frac{1}{3}$

Proved, because 1/3 is rational

(b) Proof: Quotient of a rational number and a non-zero rational number

Using direct proofs.

Let the two rational numbers be A and B.

Such that:

$A = \frac{1}{2}$

$B = \frac{2}{3}$

The quotient:

$A / B = \frac{1}{2} / \frac{2}{3}$

Express as product

$A / B = \frac{1}{2} / \frac{3}{2}$

$A / B = \frac{1*3}{2*2}$

$A / B = \frac{3}{4}$

Proved, because 3/4 is rational

(c) x + y is rational (missing from the question)

Using direct proofs.

Let x and y be

Such that:

$x = \frac{1}{2}$

$y = \frac{2}{3}$

The sum:

$x + y = \frac{1}{2} + \frac{2}{3}$

Take LCM

$x + y = \frac{3+4}{6}$

$x + y = \frac{7}{6}$

Proved, because 7/6 is rational

The above proof works for all values of A, B, x and y; as long as they are rational values

8 0

3 years ago

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Nostrana [21]

Answer:

Step-by-step explanation:

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2 years ago

What is the value of x in the equation 3x-4y =65, when y = 4? i will gift brainliest

Elenna [48]

Answer:

3x-4y=65

3x=65+4y

x=(65+4y)/3, when y=4

x=(65+4*4)/3

x=(65+16)/3

x=81/3

x=27

5 0

3 years ago

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