3 years ago

Is [(2,3),(3,2),(4,5),(5,4)] a function?

Mathematics

1 answer:

romanna [79]3 years ago

3 0

Yes it is, if you didn't use a number more than once in the x-axis then it is a function

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Which are the solutions of x ^ 2 = - 5x + 8 ? (- 5 - sqrt(57))/2, (- 5 + sqrt(57))/2 (- 5 - sqrt(7))/2, (- 5 + sqrt(7))/2 (5 - s

Ne4ueva [31]

Answer: B

Step-by-step explanation:

8 0

3 years ago

How do you solve: f(x) = -x2e-x +2xe-x , finding the zero's of f.

Maksim231197 [3]

Answer:

0 and 2

Step-by-step explanation:

$f(x) = -x^2e^{-x}+2xe^{-x}$

To find zeros set f(x)=0 and solve for x

$0 = -x^2e^{-x}+2xe^{-x}$

$0 = -e^{-x}(x^2-2x)$

now factor out x

$0 = -xe^{-x}(x-2)$

set each factor =0 and solve for x

$x=0$

$-e^{-x}=0$ no solution for x

$x-2=0, x=2$

zeros of f are 0 and 2

7 0

3 years ago

If g(x)=1/x were shifted 3 units to the left and 3 units up, what would the new equation be

emmainna [20.7K]

Answer:

g(x) 1/3-4

Step-by-step explanation:

4 0

2 years ago

Evaluate -x for x = -3.

adelina 88 [10]

X = -3
divide both sides by -1:-
-1x = -3/-1

-x = 3

3 0

2 years ago

2(-3x+4)=5x+2 solve for x

lara [203]

Answer is 6/11

Explanation :-

$2( - 3x + 4) = 5x + 2$

Now open left side brackets and multiply 2 with each on left,

$➵ - 6x + 8 = 5x + 2$

Now, bring the common values together for easier calculation.

$➵8 - 2 = 5x + 6x$

$➵6 = 11x$

$➵ \frac{6}{11} = x$

As we cant divide 6/11 , we write it as it is.

Therefore, value of x is 6/11

4 0

2 years ago