a+b+c=9 and a2+b2+c2=35 then by using identity
(a+b+c)2=a2+b2+c2+2ab+2bc+2ca,we get the answer 9x9=35+2(ab+bc+ca)
2(ab+bc+ca)=9x9-35
2(ab+bc+ca) =81-35then we get ab+bc+ca=46/2 so ab+bc+ca=23
Answer:
c= -2.5-0.5d
Step-by-step explanation:
15=-3(2c+d)
15=-6c+-3d
15+3d=-6c
-2.5-0.5d=c
If you would like to write y - x - 1 = 0 in the general form, you can do this using the following steps:
The general form of the equation is: ax + by + c = 0.
y - x - 1 = 0
-x - y - 1 = 0
The correct result would be <span>-x - y - 1 = 0</span>.
Answer:
no
Step-by-step explanation:
14:8 = 14/8 = 7/4
28:10 = 28/10 = 14/5
Since the fractions are not equal, it is not a proportion.
Answer: no
