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Leokris [45]
2 years ago
15

What is the definition of additive inverse? A, B, C or D?

Mathematics
2 answers:
VladimirAG [237]2 years ago
8 0

Answer: The answer is B :)

Step-by-step explanation:

iVinArrow [24]2 years ago
7 0
B.................................................
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2^4n × 2^ 2n = 512<br> What is the value of n.
Marina86 [1]

Step-by-step explanation:

{2}^{4n}  \times  {2}^{2n}  = 512

{2}^{4n}  \times  {2}^{2n}  =  {2}^{9}

{2}^{4n + 2n}  =  {2}^{9}

6n = 9

n  = \frac{3}{2}

8 0
2 years ago
Read 2 more answers
Solve 2x^3+7x^2-2x-1=o​
Mashcka [7]

Answer:

x=\sqrt{3}-2\\x=-\sqrt{3}-2\\x=\frac{1}{2}

Step-by-step explanation:

This is a hard one

We have to use the rational root theorem

2x^3+7x^2-2x-1 = 0

We have to find all the factors of a and d and put them in a fraction

a=2\\d=-1\\\frac{1}{1,2}

We then plug them into the equation to see if any of them work

The equation isn't true when plugging 1, but is true when plugging in 1/2

factored form of 1/2 is (2x-1)

Then we divide the original equation by (2x-1) (you can use synthetic division or long division, it would be hard to type out the process for that) to get x^2+4x+1

So now the equation is (2x-1)(x^2+4x+1)

Solve the second half of this equation using the quadratic formula to get

\sqrt{3}-2 and -\sqrt{3}-2

We already know the solution for the first half of the equation (1/2)

So the final answers are:

x=\sqrt{3}-2, -\sqrt{3}-2, \frac{1}{2}

8 0
3 years ago
5.
Paraphin [41]

Step-by-step explanation:

the mean value is the sum of all values divided by how many values there are.

so,

(3 + -5 + 70 + -90 + -13) / 5 = -35/5 = -7

-7° F is the mean temperature of the 5 cities.

3 0
2 years ago
Helpppppp me right now!
Rudik [331]

Answer:

B and D

7/12 cups

Step-by-step explanation:

2 1/3 + 2 1/4 = cups of flour needed

4 = cups of flour had

2 1/3 + 2 1/4

To have the same denominator, we take the lcm

2 + 2 + (4/12 + 3/12) =

2 4/12 + 2 3/12 - 4

Or

2 + 2 + (3 + 4) / 12 - 4

2 + 2 + (3 + 4) / 12 - 4 = 4 7/12 - 4

4 7/12 - 4 = 7/12 cups of flour needed

8 0
2 years ago
What is the equation of the line through the origin and (2,5)
mezya [45]

Answer:

2y=5x+2c

Step-by-step explanation:

7 0
2 years ago
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