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slava [35]
3 years ago
11

Find the solutions of the quadratic equation by finding the square root: x2 - 3 = 7.

Mathematics
1 answer:
Masja [62]3 years ago
3 0

Answer:

<em>x = - √10, and x =√10</em>

Step-by-step explanation:

1. Let us add 3 to either side of the equation: x^2 - 3 + 3 = 7 + 3

2. That equation would simplify to: x^2 = 10

3. Now let us take the square root on either side: √x^2 = √10

4. Being square root of x^2, we could say that: | x | = √10

5. And thus 2 answer may be derived from this equation provided absolute value symbol ( | | ): <em>x = - √10, and x =√10</em>

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Answer:

If jacob is broke then he needs to mow 2 lawns for $20 to pay his brother back.

Step-by-step explanation:

6 0
3 years ago
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PLEASE HELP!
Westkost [7]
Hello!

We know that the rate of change is just like speed as in the last Q so....

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3 years ago
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Use the distance formula, show that the points (4,0), (2,1), and (-1,-5) form the vertices of a right triangle
mario62 [17]

Step-by-step explanation:

The distance formula between two points:

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

Substitute the coordinates of the points.

A(4,\ 0),\ B(2,\ 1),\ C(-1,\ -5)\\\\AB=\sqrt{(2-4)^2+(1-0)^2}=\sqrt{(-2)^2+1^2}=\sqrt{4+1}=\sqrt5\\\\AC=\sqrt{(-1-4)^2+(-5-0)^2}=\sqrt{(-5)^2+(-5)^2}=\sqrt{25+25}=\sqrt{50}\\\\BC=\sqrt{(-1-2)^2+(-5-1)^2}=\sqrt{(-3)^2+(-6)^2}=\sqrt{9+36}=\sqrt{45}

If a ≤ b < c are the sides of the right triangle, then

a² + b² = c²

\sqrt5

used (\sqrt{a})^2=a for a ≥ 0.

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3 years ago
A rectangle has a width of 3 units. The rectangle's length is 5 times its width.
Korolek [52]

Answer:

width=3

then length=5×3

now,

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8 0
3 years ago
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79 x 52 = <br>46 x 34 =<br>28 x 70 =<br>59 x 31 =<br>62 x 45 =<br>87 x 16 =<br>39 x 20 =​
romanna [79]

Answer:

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62×45=2,790

87×16=1,392

39×20=780

8 0
3 years ago
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