John played a note on his tuba that vibrated the air 70 times per second. If he played the note for 5 seconds, how many times di
d the air vibrate?
2 answers:
Answer:
Step-by-step explanation:
All you have to do is multiply the numbers.
That's simple just multiply 70 and 5
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5x-8y=1...(1)
3x+6y=-21...(2)
(1)*3:
15x-24y=3...(3)
(2)*5:
15x+30y=-105...(2)
(3)-(2):
15x-24y-(15x+30y)=3-(-105)
15x-24y-15x-30y=108
-54y=108
y=-2
Answer:
give a picture
Step-by-step explanation:
I think is should be (5,0)
Answer:
Step-by-step explanation:
2x+3x=4
5x=4
x=4/5
Answer:
7 cm³
Step-by-step explanation:
Assume each cube has an edge 1 cm in length.
Each cube has volume 1 cm³.
There are 7 cubes.
volume = 7 cm³
