3 years ago

Please help this is very confusing.

Mathematics

1 answer:

Leni [432]3 years ago

4 0

Rotation 45 and rotation 90

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Why does this system of equations have infinitely many solutions?

lapo4ka [179]

Step-by-step explanation:

I would say the one that says after eliminating a variable,the result is x=0

cause the zero can change into any number.

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3 years ago

Find a degree 3 polynomial having zeros -5, 1 and 5 and the coefficient of x^3 equal 1

mote1985 [20]

Answer:

$x^3 -x^2 -25x +25$

Step-by-step explanation:

$\text{The roots are,}~ \alpha = -5,~ \beta = 1 ~ \text{and}~ \gamma = 5\\\\\text{The polynomial is,}\\\\~~~x^3 - (\alpha + \beta + \gamma)x^2+(\alpha \beta + \beta \gamma+ \gamma \alpha)x - \alpha\beta \gamma\\\\=x^3 - (-5+1+5)x^2 +(-5 \cdot 1 + 1 \cdot 5 + 5 \cdot -5)x - (-5)(1)(5)\\\\=x^3 -(0+1)x^2 + (-5+5-25)x +25\\\\=x^3 -x^2 -25x +25$

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2 years ago

{3x=2y+6y=x+2<br> What is the answer

Aleks04 [339]

Answer:

{3x=2y+6y=x+2=3

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3 years ago

2 4/5 times 2 times 3/5

marta [7]

Answer:

3.36 or 336/100

Step-by-step explanation:

2 4/5 x 2 x 3/5 = 3.36 in decimal form or 336/100 in fraction form

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3 years ago

Can someone explain how to do this

n200080 [17]

You need to divide the miles by the hours to et the Average speed.
M divided by h = s
Because to get the mph (miles per hour) you multiply the average speed to the hours.
S•h=mph

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3 years ago