Answer:
B) Valves closing
Explanation:
A healthy heart makes a lub-dub sound with each beat. This sound comes from the valves shutting on the blood inside the heart. The first sound (the lub) happens when the mitral and tricuspid valves close.
The dictionary definition for Letissmus Doris is a pair of large, roughly triangular muscles covering the lower part of the back, extending from the sacral, lumbar, and lower thoracic vertebrae to the armpits.
2 hats = $13.00
1 hat = $6.50
So, 6.4 x 4 = 25.6
43 - 25.6 = 17.4
17.4 divided by 2 = 8.7
final answers:
1 hat = $6.50
1 pair of gloves = $8.70
:)