Need Help !! Question 1 )

If sin θ – cos θ = 0, find the value of sin4 θ + cos4 θ. (2012, 2017D).

Notes ;

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Find the value of the variable and the length of each secant segment.

What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.