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LenKa [72]
3 years ago
11

Write an equivalent expression for (2 m + 3) (m - 1)​

Mathematics
1 answer:
Dmitry [639]3 years ago
4 0

Answer:

2m^2-3m-9

Step-by-step explanation:

use FOIL

F-firsts

2m*m=2m^2

O-outer

2m*-3=-6m

I-inner

3*m=3m

L-lasts

3*-3=-9

2m^2-6m+3m-9\\\\-6m+3m=-3m\\\\2m^2-3m-9

(2m+3)(m-3)

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Find the coordinates of the point (a, b).
Leviafan [203]

Answer:

a = \frac{1}{\sqrt{2} } and b = \frac{\sqrt{2} }{2}

Step-by-step explanation:

As we know, the radius of the unit circle is 1 unit (it is the hypotenuse in the right triangle, the blue line)

We use trigonometric formulas to find out a and b

  • Sin(45) = opposite side / hypotenuse

<=> Sin(45) = b / 1

<=> b= Sin(45)*1 = \frac{\sqrt{2} }{2}

  • Cos(45) = adjacent side / hypotenuse

<=> Cos(45) = a / 1

<=> a =  Cos(45)*1 = \frac{1}{\sqrt{2} }

So: a = \frac{1}{\sqrt{2} } and b = \frac{\sqrt{2} }{2}

5 0
3 years ago
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Mariulka [41]

Answer:

2 5/12

Step-by-step explanation:

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13 12/12 - 11 7/12 = 2 5/12

3 0
3 years ago
What’s the the value of x
Verizon [17]

Answer:

12.5\sqrt{3}

Step-by-step explanation:

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1 year ago
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scoundrel [369]
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4 0
2 years ago
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