Answer : -89
Explanation: 10 times -7 is -70. -70 minus 19 is -89.
The notes with all black are 1 beat (first position for tuba idk about the rest) the line things are pauses so you would pauses for like 1.99 seconds
D since (-5 x -5) = 25 and (7 x -8) = -56. Add 25 and -56 and your answer is D. -31
Notice below the picture
the one on the left-hand-side, is the 30-60-90 rule
those are the ratios, for 16), the hypotenuse (slanted side), is 4
for the ratios, that means that 4 = 2x, if you solve that for "x", that simply means "x" is 2
now, just use that value you found for "x" from the hypotenuse ratio, and use it to get the other two sides
what's the perimeter? all three sides added together
for 17)