84/21 = 4 20 * 4 = 80 So the base edge of the second pyramid is 80. Hope this helps :)
Answer:
#3
Step-by-step explanation:
(x,y) (x,y,+1)
So remember how you can factor out ones
like (4/8)=(4/4)(1/2)=(1)(1/2)
so first factor each think see if we can simplify any of them

can't
ok so remember division of fractions
(a/b)/(c/d)=(a/b)(d/c)=(ad)/(bc)
invert and multiply
so

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The answer is B. Hope this helps!
87/1000 into a decimal is 0.087,
You can divide with your calculator, or you can use place value.
0.8 = 8/10
0.87 = 87/100
0.087 = 87/1000
And so on and so forth...