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3 years ago

An example that disproves a conjecture. a Converse b Counterexample c Inverse d Contrapositive

Mathematics

1 answer:

Mnenie [13.5K]3 years ago

4 0

counterexample -this can be in the form of a drawing, statement, or a number

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Here we go someone help me with this!

zalisa [80]

Answer:

I think they are-

Step-by-step explanation:

I have never learned this so please don't put every single last bit of trust in me- But I believe they are congruent-

4 0

3 years ago

Figure A is a scale image of Figure B, as shown.

Inessa [10]

9514 1404 393

Answer:

x = 2

Step-by-step explanation:

Using the scale factor, we have ...

x/8 = 0.25/1

x = 8(0.25) . . . . multiply by 8

x = 2

_____

<em>Additional comment</em>

I like to write proportions with the variable in the numerator. That way they are easily solved by a single multiplication. The trick is to get corresponding parts in the same positions. Here, the fractions are written ...

B/A = smaller part / larger part = x/8 = 0.25/1

5 0

3 years ago

Find AA and BB that make the equation true. Verify your results.

CaHeK987 [17]

Answer:

a. A = -1 and B = 1

b. A = 7 and B = -5

Step-by-step explanation:

$\frac{A}{x+1} +\frac{B}{x-1} = \frac{2}{x^2-1}$

$\frac{A*(x-1)+B*(x+1)}{(x+1)*(x-1)} = \frac{2}{x^2-1}$

$\frac{Ax - A + Bx + B}{x^2 -1} = \frac{2}{x^2-1}$

To the equation be true, the "x-parts" and "nonx-parts" mist be the same, so:

Ax + Bx = 0

(A + B)x = 0

A + B = 0

A = -B

B - A = 2

B - (-B) = 2

2B = 2

B = 1 and A = -1

$\frac{A}{x+3} + \frac{B}{x +2} = \frac{2x -1}{x^2+5x+6}$

$\frac{A*(x+2) + B*(x+3)}{(x+3)*(x+2)} = \frac{2x-1}{x^2+5x+6}$

$\frac{Ax + 2A + Bx + 3B}{x^2 + 5x + 6} = \frac{2x-1}{x^2+5x+6}$

To the equation be true, the "x-parts" and "nonx-parts" mist be the same, so:

Ax + Bx = 2x

(A + B)x = 2x

A + B = 2

A = 2 - B

2A + 3B = -1

2*(2-B) + 3B = -1

4 - 2B + 3B = -1

B = -5 and A = 2 - (-5) = 7

5 0

4 years ago

A cylindrical candle has a diameter of 3 inches and a height of 3 inches.

inysia [295]

Answer: c

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

olive's garden in only 10y2 and the watermelon plants she wants to grow required 2.5y2 each.how many watermelon plants can she g

DerKrebs [107]

Answer:

4 plants

Step-by-step explanation:

In this problem, we are given the total area of the garden, which is:

$A=10y^2$

The number of plants that can fit inside the garden is given by the equation:

$A=na$

where:

n is the number of plants

a is the area of each plants

In this problem, the area of each plant is

$a=2.5y^2$

Therefore, we can re-arrange the equation to find the number of plants that can fit:

$n=\frac{A}{a}=\frac{10}{2.5}=4$

8 0

3 years ago