4^3 · 4^4 ------------ 4^9 A) 416 B) 42 C) 1/4^2 D) 1/4

Mathematics

1 answer:

Archy [21]3 years ago

3 0

D I guess because if you multiply all of that together, you get 0.0625 which is 1/16 and then you simplify it to be 1/4

You might be interested in

Need help with 61. Show steps please.

skelet666 [1.2K]

Just do 3x+5+2x=90 And solve for x.

So, 5x+5=90
5x=85
x=85/5 = 17

now you know the value of x, so you can calculate the angles.

Btw the total angle of a triangle is 180, and since this is a right angle triangle, you know that the two angles added together needs to equal 90.

3 0

3 years ago

Consider the universal relation r = {a, b, c, d, e, f, g, h, i, j} and the set of functional dependencies f = { {a, b } → {c}, {

nekit [7.7K]

Answer:

relation of FDs are {a, b, d, h}. From these all but {h}

seem plausibly part of keys. Calculating the closures of likely candidates gives:

{a, b} + = {a b, c, i}

{b, d} + = {b, d, e, f}

{a, d} + = {a, d, g, h, i, j}

{a, b, d} + = {a, b, c, d, e, f, g, h, i, j}

decompose r into 2nf and then 3nf relations shown in attachment.