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olga nikolaevna [1]
3 years ago
14

Find the point of intersection of the two lones y=3x+2 and y=2x-1

Mathematics
1 answer:
DochEvi [55]3 years ago
8 0
They intersect at the point (-3,-7)
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A random sample of 169 observations is to be drawn from a population with a mean of 80 and a standard deviation of 39. find the
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Mu=80, sigma=39, X=85
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2 years ago
Factor x^2-6x-7.<br> A.(x-7)(x+1)<br> B.(x-7)(x-1)<br> C.(x+4)(x+7)<br> D.(x+7)(x-1)
Marina86 [1]
A is the answer because x^2-6x-7 is (x-7)(x+1).


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2 years ago
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}

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3 years ago
MARKING BRAINIEST HELP PLS THX
Troyanec [42]

Answer:

165

Step-by-step explanation:

4 0
2 years ago
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Macs hotel had 128 rooms, and 25% of the rooms in the hotel did not have an ocean view. Write an expression to find the total nu
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There are 103 hotel rooms that have ocean views.
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