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Molodets [167]
3 years ago
8

1.) Which expression is equivalent to 2.3 X 2.3 X 2.3? *

Mathematics
1 answer:
Paladinen [302]3 years ago
7 0

Answer:

O A).

Step-by-step explanation:

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Factor completely 3X^2 -25​
Dominik [7]

In order to factor a polynomial, you have to find its roots

x_1,\ x_2,\ldots,x_n

So that you can factor it as

p(x)=(x-x_1)(x-x_2)\cdots(x-x_n)

So, in this case, we're looking for the solutions of

3x^2-25=0 \iff 3x^2=25 \iff x^2 = \dfrac{25}{3} \iff x=\pm\sqrt{\dfrac{25}{3}}=\pm\dfrac{5}{\sqrt{3}}

So, the polynomial can be written as

3x^2-25 = \left(x-\dfrac{5}{\sqrt{3}}\right)\left(x+\dfrac{5}{\sqrt{3}}\right)

5 0
4 years ago
Pls solve the last box I don’t understand it. Thnx :)
Pavel [41]

Answer:

(0, -3) and (2, 1)

Step-by-step explanation:

There are 5 points marked on the graph: (±2, 1), (±1, -2) and (0, -3). These are solutions to the equation describing the function:

... y = x² - 3

Apparently, you are being asked to report the coordinates of any two of these points.

_____

<em>Comment on the problem</em>

The wording "solutions to the function" is a bit odd. An equation has solutions—values of the variables that make it be true. A function is a relationship between values, a definition. There is nothing  to solve.

In the above we have assumed the intent is to find (x, y) pairs that match the function definition. Sometimes, we're interested in values of x that make y be zero. (x, y) = (±√3, 0) It isn't obvious what the intent of this question is.

8 0
3 years ago
the graph shows the cost of renting snowshoes. Kyle rents a pair of snowshoes at 8 A.M. How much will he pay if he returns them
Alexxandr [17]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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