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3 years ago

What is the math definition for 'counterexample'? When is counterexample used?

1 answer:

7 0

A counterexample is something that proves a statement, or equation, wrong. A counterexample is used in math when someone creates a theorem, writes an equation, or creates a new rule and someone proves it to be false.

For Example:
Let's say that I said an even number plus an odd number always equals an even number. A counterexample of that would be 4 + 5 = 9, because 9 is odd, therefore proving the statement wrong.

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Evaluate the expression when a = -5 and b = 4

Gwar [14]

Answer:

could you please explain me the exact question

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3 years ago

What is -3.1 + 2.73

jok3333 [9.3K]

Answer:

-0.37

Step-by-step explanation:

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3 years ago

Each statement describes a transformation of the graph of y = lnx. Which statement correctly describes the graph of y = ln(x - 7

vodomira [7]

Hello!

The parent function, y = ln(x), has a vertical and horizontal translation.

y = ln(x - h) + k | In this equation, h is the vertical shift, and k is the horizontal shift.

If ln(x - k), then the graph is translated right k units.

If ln(x + k), then the graph is translated left k units.

If ln(x) + h, then the graph is translated up h units.

If ln(x) - h, then the graph is translated down h units.

Therefore, the graph of y = ln(x - 7) + 3 is translated 3 units up and 7 units to the right, which is choice D.

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3 years ago

I need help with this question please.

Tema [17]

32+(0.8)= 32.8 is that the answer? HOpe this helped

3 0

2 years ago

Read 2 more answers

Felicia has a garden in the shape of a parallelogram as shown. What is the area of her garden? 72 ft² 75 ft² 92 ft² 96 ft² Paral

Serhud [2]

Answer:

72 ft²

Step-by-step explanation:

Given :

Parallelogram ABCD with side AD parallel to side BC and side AB is parallel to side DC.

Point E is on side AB. AE is 3 feet. DC is 9 feet.

A dotted segment DE runs from point D to the opposite side AB and is perpendicular to side AB.

DE is 8 feet.

To Find: Area of parallelogram

Solution :

Refer the attached figure .

Since opposite sides of parallelogram is equal .

So DC=AB=9 feet

Area of parallelogram = base * height

= AB*DE

=9*8 = 72 ft²

Thus the area of garden in the shape of parallelogram is 72 ft²

6 0

3 years ago