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3 years ago

What is the value of (-5)(-8) A 40 B 45 C -40 D 13

Mathematics

2 answers:

mariarad [96]3 years ago

4 0

Answer: 40

Step-by-step explanation:

Novay_Z [31]3 years ago

4 0

-5 times -8 = 40
That should be right because a negative times a negative equals a positive

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On a particular Saturday 60% of the pictures to an art museum were students if 144 students visit the museum how many total visi

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3 years ago

If angle 6 is 25 degrees how much is 7

Sindrei [870]

Given:

Angle 6 = 25 degrees

To Find:

The value of Angle 7

Solution:

We know that,

the value of Angle 6 is equal to 25 Degrees

Since Angle 6 and Angle 7 together comprise of a Straight Line, this means that they are Supplementary Angles.

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3 years ago

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e-lub [12.9K]

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3 years ago

2x-1, x < 2 12. Show that f(x) = { 3x 2 x ≥ 2 is continuous.

choli [55]

Using the continuity concept, since the lateral limits and the numeric value of the function are equal at the point in which the definition changes, the function is continuous.

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

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

$\lim_{x \rightarrow a^-} f(x) = \lim_{x \rightarrow a^+} f(x) = f(a)$

The definition of the piecewise function is given by:

f(x) = 2x - 1, x < 2.

f(x) = 3x/2, x >= 2.

Since the definition of the function changes at x = 2, and the domain of the function has no restrictions, this is the only point in which there may be a discontinuity.

The lateral limits are:

$\lim_{x \rightarrow 2^-} f(x) = \lim_{x \rightarrow 2} 2x - 1 = 2(2) - 1 = 3$ .

$\lim_{x \rightarrow 2^+} f(x) = \lim_{x \rightarrow 2} 1.5x = 1.5(2) = 3$ .

The numeric value is:

f(2) = 1.5 x 2 = 3.

Since the lateral limits and the numeric value of the function are equal at the point in which the definition changes, the function is continuous.

More can be learned about the continuity concept at brainly.com/question/24637240

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2 years ago