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If Johann lays 94 bricks on the bottom layer, how many bricks will he need to complete the first 30 layers? A. 2,385 B. 2,435 C. 2,790 D. 2,820
answered
Sep 15, 2018
Mathematics
high-school
2
votes
212k
views
1) What is the primary difference between a food web and a food chain? A) Chains contain many food webs. B) Webs contain several food chains. C) Omnivores are found only in food webs. D) First-level carnivores
answered
Jul 13, 2018
Biology
high-school
7
votes
180k
views
Wave A has an amplitude of 2 and wave B has an amplitude of 2 as shown below. What will happen when the crest of wave A meets the trough of wave B? They will interfere to create a crest with an amplitude
answered
May 9, 2018
Physics
high-school
6
votes
94.8k
views
How do find the mode?
answered
Apr 17, 2018
Mathematics
middle-school
4
votes
219k
views
Four fair coins are tossed. Find the expected number of heads
answered
Apr 11, 2018
Mathematics
college
1
vote
50.2k
views
Which double-angle or half-angle identity would you use to verify that 1+cos2a=2/1+tan2a?
answered
Jan 21, 2018
Mathematics
high-school
5
votes
105k
views
What is 200-(4+5)2 PLEASE ANSWER XXX
answered
Feb 20, 2017
Mathematics
high-school
3
votes
178k
views
A rock is thrown downward from an unknown height above the ground with an initial speed of 21m/s. It strikes the ground 8s later. Determine the initial height of the rock above the ground. The acceleration
answered
Aug 7, 2015
Physics
high-school
1
vote
88.5k
views
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