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anastassius [24]
2 years ago
6

25x2 - 64 = 0 I need help solving this using quadratic function.

Mathematics
2 answers:
andreev551 [17]2 years ago
6 0

Answer:

Step-by-step explanation:

25x^2-64=0

x=8/5, -8/5

ehidna [41]2 years ago
4 0

Answer: x = 8/5, -8/5

Step-by-step explanation:

25x^2 -64 = 0

(5x+8)(5x-8) = 0

x = 8/5, -8/5

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iragen [17]

Answer: -3π/2

Step-by-step explanation:

The unit circle is tricky, but here are some things to know:

  • When measuring angles, you usually move in the counter-clockwise direction. If you are moving clockwise (like shown in your picture), the angle will be negative.
  • The unit circle is typically measured in radians, not degrees

              - To convert from radians to degrees, multiply by 180/π

              - To convert from degrees to radians, multiply by π/180

  • The whole unit circle measures 2π (360 degrees). This means that the positive x-axis can be referred to as 0 or 2π, the positive y-axis is referred to as π/2, the negative x-axis is referred to as π, and the negative y-axis is referred to as 3π/2.

              -If the angle is negative, switch the signs of the axis above.

The information above is all you need to answer the above question, but if you want/need anything else on the unit circle, just let me know.

6 0
2 years ago
State the slope of the line perpendicular to the line -2x+5y=12
defon

Answer:

- 5/2

Step-by-step explanation:

Arrange this line equation into y = mx + b form   m = slope

 y = 2/5x + 12/5    

  then perpindicular line = - 1/m   = - 1/ (2/5) = - 5/2

5 0
1 year ago
Alma was shopping for a T-shirt. It was 15% off everything in the store. The regular price of the shirt was $16.00 it was on sal
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Answer:B.) No-40 cents too high


Step-by-step explanation:

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Answer:

- 22719559.

Step-by-step explanation:

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