Idiophone means an instrument that will produce a sound when being struck.
so the answer is B.
Answer:
3
Step-by-step explanation:
Answer:
The sum of two rational numbers will be rational.
Step-by-step explanation:
Rational numbers are numbers that can be written, are integers, and are not zero. So, any rational number plus another rational number will be rational because their sum will also be an integer, writable, and not a zero.
For this case we have that by definition
equals 180 degrees.
We must convert 135 degrees to radians, then:

Rounding off we have:
2.4 radians.
Answer:
2.4 radians
Answer:
Step-by-step explanation:
7x + 2x =90 (being perpendicular)
9x =90
x =90/9
x =10
substiute the value of x
7x
=7*10
=70
2x
=2*10
=20