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3 years ago

What is the estimate of 2 1/3 - 2/3

Mathematics

2 answers:

Dmitry_Shevchenko [17]3 years ago

7 0

2 1/3 - 2/3 would equal 1 2/3. Hope this helps!

Ratling [72]3 years ago

4 0

Around 2

1.66666666......... Repeating. So rounding up would be 2

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HELP BEEN HAVING A BAD DAY<br> Find the slope of each line (each block is one unit):

olchik [2.2K]

Answer:

m = -2/3

Step-by-step explanation:

m = slope

$m = \frac{y2 - y1}{x2 - x1}$

m = -3 -1/ 3 - (-3)

m= -4/ 6

m= -2/3

3 0

4 years ago

Write each expression as a product of linear factors 1. X^2+1/2x 2. X^2+2x-3 3. (2x-3)^2 4. X^3+2x^2-19x-20

Grace [21]

Answer:

1. X^2+1/2x = $x(x+\frac{1}{2})$

2. X^2+2x-3 = $(x-1)(x+3)$

3. (2x-3)^2 = (2x-3)(2x-3)

4. X^3+2x^2-19x-20 = $(x+1)(x-4)(x+5)$

Step-by-step explanation:

Each expression can be written as a product of linear factors as follows

1. X^2+1/2x ⇒ $x^{2} + \frac{1}{2}x$

$x^{2} + \frac{1}{2}x$ = $x(x+\frac{1}{2})$

Hence, X^2+1/2x = $x(x+\frac{1}{2})$

2. X^2+2x-3 ⇒ $x^{2} +2x-3$

$x^{2} +2x-3 = x^{2} +3x-x-3$

$x^{2} +3x-x-3 = x(x+3) -1(x+3)$

$x(x+3) -1(x+3) = (x-1)(x+3)$

Hence, X^2+2x-3 = $(x-1)(x+3)$

3. (2x-3)^2 ⇒ $(2x-3)^{2}$

$(2x-3)^{2} = (2x-3)(2x-3)$

Hence, (2x-3)^2 = (2x-3)(2x-3)

4. X^3+2x^2-19x-20 ⇒ $x^{3}+2x^{2} -19x -20$

$x^{3}+2x^{2} -19x -20 = (x+1)(x^{2} +x-20)$

First,

$x^{2} +x-20 = x^{2} +5x-4x-20\\x^{2} +5x-4x-20= x(x+5)-4(x+5)\\x(x+5)-4(x+5) = (x-4)(x+5)$

∴ $(x+1)(x^{2} +x-20) = (x+1)(x-4)(x+5)$

Hence, X^3+2x^2-19x-20 = $(x+1)(x-4)(x+5)$

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3 years ago

Find the circumference of the circle. Round to the nearest tenth.

Natasha_Volkova [10]

Formula for the circumference of a circle: C = pi x diameter

We are given the radius here, but we need the diameter. The diameter of a circle is equal to two times the radius.

diameter = 40 x 2 = 80 in

C = pi x 80

C = 80pi = 251.3 in

Hope this helps!! :)

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3 years ago

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Marizza181 [45]

I don’t think it has any real solutions

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3 years ago

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andrew11 [14]

Answer:

Step-by-step explanation:

x^2-6=0

x^+6=0 ( add six to both sides)

x^2=6

x= the square root of 6 ( to get rid of the exponent you have to do the opposite....which is the square root)

x=2.44948974278

You may have to round if not given the exact number.

4 0

3 years ago

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