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2 years ago

Help me please I’m doing subtract mixed fractions and I don’t understand it

Mathematics

2 answers:

Serggg [28]2 years ago

5 0

Answer:

turn all the mixed numbers in inproper fractions (ex. 2 1/3 = 7/3) then subtract

Step-by-step explanation:

alex41 [277]2 years ago

4 0

Answer:

turn all mixed fractions into improper fractions

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Question 8(Multiple Choice Worth 5 points)

Romashka-Z-Leto [24]

Answer:

1/3^3

Step-by-step explanation:

The answer is 1/3^3 or 1/27 because 3^2 is 9 and 3^-5 is 1/243. This results in the equation 9 x 1/243. When simplified you get 1/3^3 or 1/27.

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2 years ago

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How does the vertex solved in octagon shapes

yKpoI14uk [10]

Answer:

Vertex. An octagon has eight vertices (corners).

Step-by-step explanation:

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2 years ago

I NEED HELP PLS THIS IS DUE IN 3 HOURS

Mariulka [41]

Answer:

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

Part 2) $x^{2} -6x+4=(x-3-\sqrt{5})(x-3+\sqrt{5})$

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

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

Part 1)

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

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

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

Part 2)

in this problem we have

$x^{2} -6x+4=0$

$a=1\\b=-6\\c=4$

substitute in the formula

$x=\frac{-(-6)(+/-)\sqrt{-6^{2}-4(1)(4)}} {2(1)}$

$x=\frac{6(+/-)\sqrt{20}} {2}$

$x=\frac{6(+/-)2\sqrt{5}} {2}$

$x_1=\frac{6(+)2\sqrt{5}}{2}=3+\sqrt{5}$

$x_2=\frac{6(-)2\sqrt{5}}{2}=3-\sqrt{5}$

therefore

$x^{2} -6x+4=(x-(3+\sqrt{5}))(x-(3-\sqrt{5}))$

$x^{2} -6x+4=(x-3-\sqrt{5})(x-3+\sqrt{5})$

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4 years ago

Andrea has 35 beads total. She wants to make 5 necklaces. how many beads are going to be on each necklace

Sindrei [870]

Andrea 7 beads toatal

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3 years ago

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6y is less than 18 how do i do it

tia_tia [17]

So if the equation is 6y<18, you have to get the y alone so you have to do inverse operations.
Since 6 is being multiplied by y, you have to divide the whole equation by 6. You are left with y<3, which is the answer. Do you understand?

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3 years ago

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