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icang [17]
3 years ago
9

01:50:43

Mathematics
2 answers:
leonid [27]3 years ago
3 0
217.8 square centimeters
Illusion [34]3 years ago
3 0

Answer:

c hope this helps

Step-by-step explanation:

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If 2n + 3(2- 2n) = 14 what is the value of n? (Please give the correct answer, I will give brainliest)
allochka39001 [22]

Answer:

  n = -2

Step-by-step explanation:

Eliminating parentheses, you have ...

  2n +6 -6n = 14

Combining terms and subtracting 6, you get ...

  -4n = 8

Dividing by the coefficient of n gives ...

  n = -2

_____

<em><u>Check</u></em>

  2(-2) +3(2 -2(-2)) = 14

  -4 +3(2+4) = 14

  -4 +3(6) = 14

  -4 +18 = 14 . . . . answer checks OK

5 0
3 years ago
A bag of marbles contains 1 green, 5 red, and 2 blue. Find the probability of picking a red marble, putting it back in the
sleet_krkn [62]

Answer:

Red = 25/32768

Blue = 4/64

Step-by-step explanation:

Green Marbles = 1

Red Marbles = 5

Blue Marbles = 2

Probability of picking a red marble = 5/8 x 5/8 x 5/8 x 5/8 x 5/8 = 25/32768

Probability of picking a blue marble = 2/8 x 2/8 = 4/64

6 0
3 years ago
Solve: (2x - 3)^2 = -4
Wewaii [24]

Answer:

No real solutions;

x=i+1.5

Step-by-step explanation:

The easiest method to solve an algebraic equation is to use inverse operations. This applies to the given equation;

(2x-3)^2=-4\\

- Take the square root of both sides

\sqrt{}                

==================================================================

As one can see, the right side is a negative number. However, one cannot take the square root of a negative number and get a real result. Therefore, one must use imaginary numbers. Remember, the imaginary unit (i) represents (\sqrt{-1}).

==================================================================

2x-3=2i

- Add (3) to undo the (-3)

+3          

2x=2i+3

- Divide by (2) to remove the coefficient of (2x)

÷2           ÷

x=\frac{2i+3}{2}

Simplify,

x=i+1.5

6 0
3 years ago
The radius of a semicircle is 5 yards. What is the semicircle's diameter?
mart [117]

Answer:

Diameter: 10 Yards

Step-by-step explanation:

d = 2r

d = 2 ( 5 )

d = 10

7 0
3 years ago
Plsssssssssssssssss help
Veseljchak [2.6K]

Answer:

60

Step-by-step explanation:

x=60 .

The triangle is equilateral and x=60 cause the two lines are ||

4 0
3 years ago
Read 2 more answers
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