Answer:
2√15
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
if the sides are in proportion set the proportions
6.21/ 5.4 = x/2.6; cross multiply
5.4*x = 6.21 *2.6; divide by 5.4
x= 2.99
Answer:
18
Step-by-step explanation:
Let the two numbers be x and y
x+y = 9
x-y = 3
Add the two equations together
x+y = 9
x-y = 3
------------------
2x = 12
Divide by 2
x = 6
x+y = 9
6+y = 9
y = 3
The product of x and y
xy
6*3 = 18