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Kipish [7]
3 years ago
13

Pls help this is due in 10 minutes pls help ​

Mathematics
1 answer:
maks197457 [2]3 years ago
3 0

Answer:

3. 4

Step-by-step explanation:

i think

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Don't be fooled sqrt(10) goes on for many many places and if you know the 20th digit is a 9 you have a 1 in 10 chance of predicting what the next digit is. The same is true for pi and sqrt(2). The sqrt root of 16 is 4 which is rational. It could be - 4 which is still rational. The other 3 go on forever and each one has the property of unpredictability of the next digit if you know the current digit.</span>
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Can this be simplified?
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I NEED HELP ON FINDING THIS USING PYTHAGOREAN THEOREM
uranmaximum [27]
X is approximately 62.23 units

Separate the square into two right triangles. Since all 4 sides of the square are congruent (equal to each other), they are all 44 units long. The Pythagorean Theorem is a^2 + b^2 = c^2, where a and b are sides of the triangle and c is the hypotenuse (longest side of the right triangle, in this case would be x).

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5 0
4 years ago
Do the points (−1,9) and (2,4) represent the vertex and a sample point, respectively, of y=−2(x+1)2+9? Explain
Reil [10]

Answer:

Vertex: (-1,9) is true

Sample Points: (2,4) is not true

Step-by-step explanation:

Given

Vertex: (-1,9)

Sample\ Points: (2,4)

Required

Determine if the vertex and sample points exist for y= -2(x+1)\²+9

Solving for the vertex:

y= -2(x+1)\²+9

Writing the given equation in the form:

y = ax^2 + bx + c

Expand the bracket

y= -2(x+1)(x+1)+9

Open Bracket

y= -2(x+1)(x+1)+9

y = -2(x^2 + 2x + 1) + 9

Open bracket

y = -2x^2 - 4x -2 + 9

y = -2x^2 - 4x +7

Solve for x using:

x = \frac{-b}{2a}

Where a = -2; b = -4;

<em>So:</em>

x = \frac{-(-4)}{2 * (-2)}

x = \frac{4}{-4}

x = -1

Substitute -1 for x in y = -2x^2 - 4x +7

y = -2(-1)^2 -4(-1) + 7

Simplify all brackets

y = -2(1) + 4 + 7

y = -2 + 4 + 7

y = 9

Hence;

<em>The vertex (x,y) is (-1,9)</em>

<em>This is true</em>

Checking sample points: (2,4)

In this case; x = 2 and y = 4

Substitute x = 2 and y = 4 in y= -2(x+1)\²+9

4 = -2(2 + 1)^2 + 9

4 = -2(3)^2 + 9

4 = -2 * 9 + 9

4 = -18 + 9

4 \neq -9

<em>Hence;</em>

<em>This sample points </em>(2,4)<em> does not exist</em>

8 0
3 years ago
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