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Liula [17]
3 years ago
7

Use suitable identity to find the product of (7 – 2y) (7 +2y).

Mathematics
1 answer:
AVprozaik [17]3 years ago
6 0
<h3>Solution :</h3>

\tt (7 - 2y) (7 +2y)

<u>By using identinty</u> :

\large \underline{\boxed{\bf{(a-b)(a+b) = a^2 - b^2}}}

\tt : \implies (7 - 2y) (7 +2y) = (7)^{2} - (2y)^{2}

\tt : \implies (7 - 2y) (7 +2y) = 49 - 4y^{2}

\large \underline{\boxed{\bf{(7 - 2y) (7 +2y) = 49 - 4y^{2}}}}

Hence, value of (7 - 2y) (7 +2y) is 49 - 4y².

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Which coordinate grid shows Point A at (0.75, −1.50)? Coordinate grid shown from negative 2 to positive 2 on the axis and negati
Monica [59]

Answer:

The correct option is;

Coordinate grid shown from negative 2 to positive 2 on the x-axis and negative 2 to positive 2 on the y-axis in increments of 1 over 4. Only the whole numbers are labeled. A point A is shown at the intersection of 3 grid lines to the left of the y-axis and 6 grid lines above the x-axis

Step-by-step explanation:

The coordinate of the point in the question = (0.75, -1.50)

The options given are

x = -2 to 2 on the y-axis and y = -2 to 2  on the y-axis in increments of 1/4 Only the whole numbers are labelled.

Point A = 6 grid lines to the left of the y-axis and 3 grid lines above the x-axis corresponding to the point (6×(-1/4), 3×1/4) = (-1.5, 0.75)

From the above, it is seen that the point A that will correspond with the point (0.75, 1.50) will have a spacing of 3 grid lines to the left of the y-axis and 6 grid lines above the y-axis

Therefore, the correct option is Coordinate grid shown from negative 2 to positive 2 on the x-axis and negative 2 to positive 2 on the y-axis in increments of 1 over 4. Only the whole numbers are labeled. A point A is shown at the intersection of 3 grid lines to the left of the y-axis and 6 grid lines above the x-axis.

4 0
3 years ago
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nadezda [96]

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Step-by-step explanation:

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OverLord2011 [107]
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Using the continuity concept, it is found that the function is continuous for all real values.

<h3>What is the continuity concept?</h3>

A function f(x) is continuous at x = a if it is defined at x = a, and:

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In this problem, we are given a piece-wise function, hence we have to look at the points where the definition of the function changes. In this problem, it can only be discontinuous at x = 0, which we have to verify.

Then:

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The 3 values are equal, hence the function is continuous at x = 0 and for all real values.

More can be learned about the continuity of a function at brainly.com/question/24637240

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