2 years ago

Which set includes rational numbers but not natural numbers?

Mathematics

2 answers:

Inga [223]2 years ago

7 0

{n/m, n,m ∈ Z: n neq m}

xxTIMURxx [149]2 years ago

5 0

Answer:

that is not right

Step-by-step explanation:

first it got to be numbers secondly it got to be number elstuipo

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Find all the real fourth roots of 6561.select the correct choice below and, if necessary, fill in the answer box to complete y

Scrat [10]

9 because 9⁴ gives you that result, you can try on a calculator ;)

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2 years ago

Factor the following trinomial. (Hint: Solve the equations first.)<br><br> x²-2x-2

Alex_Xolod [135]

Answer:

$(x-(1+\sqrt{3}))(x-(1-\sqrt{3}))$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2} -2x-2=0$

$a=1\\b=-2\\c=-2$

substitute in the formula

$x=\frac{-(-2)(+/-)\sqrt{-2^{2}-4(1)(-2)}} {2(1)}$

$x=\frac{2(+/-)\sqrt{12}} {2}$

$x=\frac{2(+/-)2\sqrt{3}} {2}$

$x_1=\frac{2(+)2\sqrt{3}} {2}=1+\sqrt{3}$

$x_2=\frac{2(-)2\sqrt{3}} {2}=1-\sqrt{3}$

therefore

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

5 0

2 years ago

If 10 pounds of sugar cost $18.54, how much will 15 pounds of sugar cost?

Elina [12.6K]

15 pounds of Sugar will cost $27.81.
18.54/2=9.27. 9.27*3=27.81. So your total answer would be $27.81.

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3 years ago

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Find area of a circle that has a diameter of 8 m

guapka [62]

Diameter \ 2 = radius
8/2 = 4
4^2 = 16
16*pi is about 50.27
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11x -20y=28 3x+4y =36

jekas [21]

Answer: X is equal to 8 and Y is equal to 3

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