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melamori03 [73]
2 years ago
15

What are the solutions to this quadratic equation? 5x^2-7-18=0

Mathematics
1 answer:
Helen [10]2 years ago
6 0

Answer:

x=±√5

Decimal form:

x=2.23606797

Step-by-step explanation:

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Need help with these two question!!??
lawyer [7]

The measure of x in both parts is: 120°

Step-by-step explanation:

Part A:

We can clearly see that the figure in part a has six equal sides. So the given figure is a hexagon.

A hexagon has six equal sides in six equal interior angles.

Sum of interior angles of hexagon is 720°

So,

Measure\ of\ one\ agnle=\frac{Sum\ of\ interior\ angles}{number\ of\ angles}\\=\frac{720}{6}\\=120

Part B:

The figure is a Dodecagon with 12 sides.

The Dodecagon has 12 equal sides and angles.

The sum of internal angles of Dodecagon is 1440°

So,

Measure\ of\ one\ angle=\frac{Sum\ of\ angles}{Number\ of\ angles}\\=\frac{1440}{12}\\=120

The measure of x in both parts is: 120°

Keywords: Polygons, Hexagon

Learn more about polygons at:

  • brainly.com/question/8358304
  • brainly.com/question/8540796

#LearnwithBrainly

6 0
3 years ago
The square root of 5 is between which two integers
Verdich [7]

2

6 0
3 years ago
Solve for x 2 + 2 * x = 10
inysia [295]

Answer:

6

Step by step explanation:

2 + 2 * x = 10

2x+2=10

2x+2−2=10−2

Therefore, x = 6

7 0
3 years ago
A lawn sprinkler sprays water 5 ft in every direction as it rotates. What is the area of the sprinkled lawn?
Karolina [17]

Answer:

78.57

Step-by-step explanation:

Radius is 5 feet

Area of circle is pi*r  Squared

22/7*5*5

78.57 square feet

6 0
3 years ago
Read 2 more answers
Cornelius has 25 nickels, 39 dimes, 22 quarters, and 12 fifty-cent pieces. How
Mars2501 [29]

Answer:

16.65$

Step-by-step explanation:

6 0
3 years ago
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