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masya89 [10]
2 years ago
14

Just number 3, i dont rly need an explanation

Mathematics
2 answers:
elena-s [515]2 years ago
8 0

Answer:

L=(-2,4)

Step-by-step explanation:

I just had this homework over the weekend. And there are the rest of the answers too

Yanka [14]2 years ago
6 0
The answer is (-2,4) I know this because I’m smart
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∆ABC m∠B = 90° AB = 4 BC = 3<br> Find AC
lutik1710 [3]

Step-by-step explanation:

In ∆ABC, m∠B = 90°

Therefore ∆ABC is a right angled triangle with sides AB = 4 & BC = 3. AC is the hypotenuse.

Hence, by Pythagoras theorem:

AC^2 = AB^2 +BC^2  \\  \\  \therefore \: AC =  \sqrt{AB^2 +BC^2 }  \\  =  \sqrt{ {4}^{2} +  {3}^{2}  }  \\  =  \sqrt{16 + 9}  \\  =  \sqrt{25}  \\  = 5 \\  \\ \huge \red{ \boxed{ \therefore \: AC = 5 \: units}}

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3 years ago
A set of points in the xy-coordinate plane meets two conditions, as described.
Pepsi [2]

Answer:

Condition 1:   y>0

Condition 2:  x+y>-2

Step-by-step explanation:

We are told that we have a set of points in the Cartesian system (i.e. x-y coordinate), so we can define our point as:

(x,y)

We are given two conditions and we want to create a system of inequalities. Now, generally speaking, inequalities are expressions relating mathematical expressions through 'comparison' (i.e. less than, greater than, or less/greater and equal to) usually recognized by , >, \leq and \geq, respectively.

So in our case let set up our inequalities.

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This can be mathematically translated as

y>0

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Condition 2: the sum of the coordinates is more than -2

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x+y>-2

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The system of inequalities described by the two conditions is:

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Alexxandr [17]

Answer: 7/12 of the beads are blue and green

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1/3 x 4/4= 4/12

Then to find the total fraction of both green and blue beads on the necklace, you simply have to add the two fractions together.

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hope this helps :)

4 0
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