The 7 is not a variable because variables are letters. The number seven is a coefficient because they are numbers used to multiply a variable. Example: 6z means 6 times z, and "z" is a variable, so 6 is a coefficient. Example: In ax2 + bx + c, "x" is a variable, and "a" and "b" are coefficients
<em>Thank you! ps can you give me brainly :3</em>
Answer: 7x-5x(exponent of 2)-21
Step-by-step explanation:
C = 5(59-32)
C = 5(27)
C = 135
5 : 3 = 45 : 27
3/5 = 27/?
3 × 9 = 27 5 <span>× 9 = 45
5 : 3 = 45 : 27
45 boys</span>