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3 years ago

Factorize a^2–b^2 Hence find the exact value of 2557^2-2547^2

Mathematics

2 answers:

motikmotik3 years ago

8 0

Answer:

51,040.

Step-by-step explanation:

a^2–b^2 = (a - b)(a + b) so

2557^2-2547^2 = (2557-2547)2557+2547)

= 10 * 5104

= 51,040.

statuscvo [17]3 years ago

4 0

Answer:51040

Step-by-step explanation:a^2-b^2=(a+b)(a-b)

2557^2-2547^2

(2557-2547)(2557+2547)

(10)(5104)

51040

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Define the domain of the following

devlian [24]

The domain of the function or relation on the graph is { -2, -1, 0, 2 and 5}

<h3>What is the domain of a function?</h3>

The domain of the function is the set of input values of the graph

<h3>How to determine the domain of the function?</h3>

The function is represented by the set of relation or ordered pairs on the graph

The graph is given as an attachment

The ordered pairs in the relation on the graph are:

(x, y) = (-2, -3), (-1, -1), (0, 3), (2, 1) and (5, 2)

Remove the y values in the above domain

x = -2, -1, 0, 2 and 5

The x values represent the domain of the function

And the domain of the function is the set of input values of the graph

Hence, the domain of the function or relation on the graph is { -2, -1, 0, 2 and 5}

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Paul has 7 piles of sports cards. There are3 basketball. football. and4 baseball cards in each pile. How many total sports cards

aalyn [17]

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Step-by-step explanation:

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If (-1, y) lies on the graph of y=2^2x then y=

zubka84 [21]

Answer:

y is 1/4 when x is -1 if I did interpret your equation right. Please see that I did.

I believe the equation to be $y=2^{2x}$ . If you meant $y=2^2x$ , please let me know.

Thanks kindly.

Step-by-step explanation:

If (-1,y) lies on the graph of $y=2^{2x}$ , then by substitution we have:

$y=2^{2\cdot -1}$ .

We just need to simplify to determine y:

$y=2^{2 \cdot -1}$

Multiply the 2 and -1:

$y=2^{-2}$

Use reciprocal rule for exponents to get rid of the negative:

$y=\frac{1}{2^2}$

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iren2701 [21]

Answer:

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Step-by-step explanation:

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Another way is

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