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Sedaia [141]
3 years ago
12

Plz help me!!!!!!!!!!!!

Mathematics
1 answer:
Mashutka [201]3 years ago
7 0

Answer:  3, -3, 3i, -3i

<u>Step-by-step explanation:</u>

<u>x^4-81=0\\\\Factor:\\(x^2-9)(x^2+9)=0\\(x-3)(x+3)(x^2+9)=0\\\\\text{Apply the Zero Product Property:}\\x-3=0\qquad x+3=0\qquad x^2+9=0\\\boxed{x=3}\qquad \qquad \boxed{x=-3}\qquad \quad x^2=-9\\.\qquad \qquad \qquad \qquad \qquad \qquad x=\sqrt{-9}\\.\qquad \qquad \qquad \qquad \qquad \qquad \boxed{x=\pm 3i}</u>

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The three angles of a triangle create the extended ratio 2:2:5. What is the measure of the largest angle?
Dima020 [189]

Answer:

100°

Step-by-step explanation:

The ratio of angles of the triangle is 2:2:5. We know that the angle sum property of the triangle is 180°. So that , let the ratio be 2x : 2x : 5x .

=> 2x + 2x + 5x = 180°

=> 9x = 180°

=> x = 180°/9

=> x = 20°

Here the largest ratio is 5x . Therefore the largest Angle is ,

=> Largest Angle = 5x

=> Largest Angle = 5 × 20°

=> Largest Angle = 100°

<h3>• Hence the largest Angle is 100° </h3>
7 0
3 years ago
CAN SOMEBODY PLEASE HELP ME!!!!!!!!!!
lana66690 [7]

The answers to the blanks are

1. 600,

2. 120,

3. 120,

4. 180.

Explanation:

  • The fence means perimeter around the court. So a tennis court's perimeter is 600 feet fence. The perimeter of a rectangle is 2 times the sum of the rectangle's length and the rectangle's width.
  • It is given that length equals 60 more than width i.e. l = w + 60, where l is the length of the court and w is the width of the court.
  • The perimeter of a court = 600 = 2 (l + w) = 2l + 2w = 2 (w +60) + 2w,                                                                                                     this becomes, 2w + 120 + 2w = 600; 4w = 480, w = 120.
  • Since l = w + 60, l = 120 + 60 = 180. So length of a court is 180 feet and the width of a court is 120 feet.

6 0
3 years ago
Please find the value of x
monitta

Answer:

x = 84

Step-by-step explanation:

The two angles form a line

A line is 180 degrees

x+11 +85 = 180

Combine like terms

x+96 = 180

Subtract 96 from each side

x+96-96 = 180-96

x = 84

6 0
3 years ago
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PSYCHO15rus [73]

Answer:

watch the video

Step-by-step explanation:

3 0
3 years ago
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2. -8+12= A::4 B:20. C:-20. D:-4
Nataly_w [17]

Answer:

4 is the answer.

Step-by-step explanation:

It is the answer because one of your numbers has a (-) sign. So you take

12-(-)8= 4 a positive 4 because 12 is not a negative

3 0
3 years ago
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