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Alenkinab [10]
3 years ago
15

13. A counterexample

Mathematics
2 answers:
nikklg [1K]3 years ago
6 0

Answer:

. shows that a conjecture is not always true

Step-by-step explanation:

How?

  • If you want to prove something you give an example or proof.
  • But if you want to disprove that you need an counterexample.
marin [14]3 years ago
5 0

Answer:

b

Step-by-step explanation:

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Given f(x)2x and g(x) = x^2+3 , find f(g(x)).
MakcuM [25]

Answer:

2x^2 + 6.

Step-by-step explanation:

Replace the x in f(x) by g(x):

f(g(x)) = 2(x^2 + 3)

= 2x^2 + 6.

8 0
3 years ago
What is the value of x? O 13 O 14 O 26 O 28​
BartSMP [9]

It’s A. 13


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7 0
2 years ago
Which expression is equivalent to 64x^3-343
In-s [12.5K]

Answer:

B:  (4x - 7)(16x^2 + 28x + 49)

Step-by-step explanation:

64x^3-343 can be rewritten as 4^3x^3 - 7^3 or (4x)^3 - 7^3.  This is the difference of two cubes.  The appropriate formula for factoring such is

       a^3 - b^3 = (a - b)(a^2 + ab + b^2).  Therefore,

our (4x)^3 - 7^3 = (4x - 7)(16x^2 + 28x + 49).  This is Answer B.

4 0
3 years ago
PLSSSS ANSWER!!!!
patriot [66]
The answer is y=1/2x-2
6 0
4 years ago
Read 2 more answers
Y=+4=3/4 (x-1)<br><br> Find a point on the line and the lines slope
snow_tiger [21]

Answer:

slope = -3/4

Step-by-step explanation:

Slope:

− 3/4

y-intercept:  

13 /4

Any line can be graphed using two points. Select two  values, and plug them into the equation to find the corresponding  values.

x   |  y

0   |  13 /4

1   |   5/ 2

Hope this helps @(^_^)@

3 0
3 years ago
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