During cardiovascular development, cells exposed to gradients of Retinoic Acid will form the following heart chamber?

This genetic condition causes intellectual disability and behavioral challenges that can be seen with physical traits such as: long narrow face, large ears, and prominent forehead, 

What is Autism?

The sigma notation for the following finite series is: 1 + 4 + 7 + 10 + 13 + 16

The sigma notation for the following finite series is: 1 + 4 + 7 + 10 + 13 + 16

Given tan  α=33{math:α=33}and sin β=32{math:β=32} and α{math:α} and β are between 0 and π2{math:π2}, find cos (α{math:α} + β) exactly.

Two ships are on an east-west line from each other. There is a lighthouse on the shore whose position as seen from one ship is N60.67°W and from the other ship N55.17°E. The first ship is 80 km from the lighthouse. To the nearest kilometer, how far apart are the ships?

Two ships are on an east-west line from each other. There is a lighthouse on the shore whose position as seen from one ship is N60.67°W and from the other ship N55.17°E. The first ship is 80 km from the lighthouse. To the nearest kilometer, how far apart are the ships?

State the nth term definition for the following sequence: 84, 42, 21, 10.5, . . .

The recursive definition for the following sequence is: 1, 1, 2, 3, 5, 8, 13, . . .