In developing the ways of calculating time astraonomers divided an hours into 60 minutes. Why is 60 better than 59 or 61

Find the value of sin x° and cos y°. What relationship do the ratios of sin x° and cos y° share? A right triangle is shown with one leg measuring 15 and another leg measuring 8.

As they fought against dictatorships overseas, what did African American soldiers feel they were fighting back home? A) racism B) dictatorships C) totalitarianism D) war crimes

If the graph of the parent function f (x) = x is shifted 7 units up 5 left, what is the function? f (x) = (x+5) + 7 f (x) = x+12 f (x) = (x+7) - 5 f (x) = 7x - 3

state whether the function is a polynomial. f (x) = 3x²+7x-3

What is 7.8*10^5 hours in to days in scientific notation

Which data set is the most clustered around its mean? a. 4,10,8,6 b. 11,3,10,4 c. 2,9,13,4 d. 11,2,9,6

How many permutations of {1, 2, 3, 4, 5, 6} exist such that: (a) No even integer is in its natural position. (b) Exactly three integers are in their natural position. (c) 1 and 6 are in their natural positions.

Use the formula F=1.8C+32 to convert - 20° into fahrenheit.

Solve in the correct order: (-3 - 4) / - 9 A) - 7/-9 B) - 7/9 C) 7/9 D) - 1/9

Suppose a lab needs to make 400 liters of a 39% acid solution, but the only solutions available to the lab are 20% acid and 50% acid.