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yanalaym [24]
2 years ago
12

13) What are the solutions to y2 = 81?

Mathematics
2 answers:
emmainna [20.7K]2 years ago
8 0
9 would be the y because if you substitute the 9 with the y it would be 9 to the second power which would mean you would multiply 9 • 9
N76 [4]2 years ago
6 0

Step-by-step explanation:

y²=81

y²=9²

:. bases same powers equal,

y=9.

hope this helps you.

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A regular hexagon is inscribed in a circle with a diameter of 8 inches.
love history [14]

Answer:

b) 41.6 square inches

Step-by-step explanation:

A regular hexagon is inscribed in a circle with a diameter of 8 inches.

Step 1

We find the radius

Radius = Diameter/2

= 8 inches/2 = 4 inches

a. What is the perimeter of the hexagon?

b. What is the area of the hexagon?

An hexagon has 6 sides

The number of angles in an hexagon is calculated as:

[(Number of sides - 2) x 180]

= (6 - 2) x 180 = 720 ÷ 6 = 120°

The hexagon into 6 equilateral triangles with 4 for each of its sides.

The area of one of the triangles:

Height = 2√3

- one triangle's area = (1/2)bh = (1/2)(4)(2√3) = 4√3

The area of the hexagon by multiplying the one triangle's area by 6:

6 x 4√3 = 24√3 square inches

= 41.569219382 square inches

Approximately = 41.6 square inches

3 0
3 years ago
Is a vertical line perpendicular to the x-axis
borishaifa [10]
A vertical line is perpendicular to the x-axis because they would intersect to form a 90 degree angle.
5 0
3 years ago
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Whitepunk [10]
Angle A is the same as Angle C. 160 degrees.
5 0
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It costs $12 to enter the fair and $0.50 per ticket for rides. How much total would you spend if you paid admission and bought 7
shepuryov [24]

The initial cost is $12 to enter.

Each ticket is $.50

we want to find out how much it costs for 70 tickets so we multiply the cost by the amount;

70 x .50 = 35

Therefor including the entry fee, it would cost $35 + $12

Which is $47

I hope this helps! :)

7 0
3 years ago
Why is the point ( 3, 4 ) the solution to this system of equations?<br> y= 1/3x + 3<br> y= 2x - 2
evablogger [386]

Answer:

The answer to your question is because it is a solution of each equation.

Step-by-step explanation:

Data

Point (3,4)

Equation l     y = 1/3x + 3

Equation ll     y = 2x - 2

Process

1.- To test is a point is solution to a system of equations,

-Substitute the point in both equations

Equation l            4 = 1/3(3) + 3

                            4 = 1 + 3

                            4 = 4               The point is a solution because

                                                     4 = 4

Equation ll            4 = 2(3) - 2

                             4 = 6 - 2

                             4 = 4               This point is a solution for the second

                                                     equation but not for the first one.

2.- Conclusion

As the point is a solution of each equation, it is a solution of the system.

6 0
3 years ago
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