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AURORKA [14]
3 years ago
10

Solve this equation please 5X2 - 15 = 5​

Mathematics
1 answer:
Lena [83]3 years ago
4 0

Answer:

x = 2 or x = -2

Step-by-step explanation:

5x² - 15 = 5​

⇌

5x² = 15 + 5

⇌

5x² = 20

⇌

x² = 20/5 = 4

⇌

x² = 2²

⇌

x² - 2² = 0

⇌

(x - 2)(x + 2) = 0

⇌   we use the zero product property

x - 2 = 0 or x + 2 = 0

⇌

x = 2 or x = -2

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Three more Than the quotient of a number and 2 is equal to 7
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Answer:

Step-by-step explanation:

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5 0
3 years ago
Find the radical equivalent of 27^2/3 and compute it.<br> please help i'm taking a test.
AveGali [126]
Note that (a^b)^c=a^(bc) so in this case we have:

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6 0
3 years ago
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Sonja [21]

Answer:

Option D

Step-by-step explanation:

32). Given vertices of the triangle are M(2, -3), N(3, 1) and O(-3. 1).

Distance between two points (x_1,y_1) and (x_2,y_2) is given by the expression,

Distance = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Distance between M(2, -3) and N(3, 1) will be,

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Distance between M(2, -3) and O(-3, 1),

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Distance between N(3, 1) and O(-3, 1),

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By this property,

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(\sqrt{41})^2=(\sqrt{17})^2+6^2

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41 = 51

False.

Therefore, given triangle is not a right triangle.

Since, length of all sides are not equal, given triangle will be a scalene triangle.

Option D is the correct option.

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3 years ago
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X + 2y = 2

If you need an explanation, let me know. 
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