Answer: 4
Step -by-step :
7+7+7=21
5+12+a=
17+a
21-17=4
1. 6x-15
2. 18x-55
3. 7.2x+2.3y-2
Answer:
10.7cm
Step-by-step explanation:
x^2= 115
x = √115
x = 10.7
-x(3x-10)=8
-3x^2+10x=8 (DISTRIBUTE)
-3x^2+10x-8=0 (BALANCE TO ZERO)
(-3x+4)(x-2)=0 (FACTOR)
(-x+4/3)(x-2)=0 (SIMPLIFY)
{x=2 OR x= 4/3}
60/500=?/100
60/5=12
12/100
12%.
