Answer:
(x+5)⋅(x+4)= x2+9x+20
Step-by-step explanation:
(x+5)(x+4)
=x
2
+4x+5x+20=
=x
2
+9x+20
Answer:
B
Step-by-step explanation:
3×+ 4y =24
3x -y = 3 It is just like algebra I might be wring but I tryed
Answer:
6=a
7=b
9=b
Step-by-step explanation:
SOMEONE DELETED MY ANSWER AND IT WAS CORRECT ANY WAY SORRY I DONT KNOW ALL OF THEM
multiply 5 times 21 then 4 times 15 and then add them together