Answer:
-2
Step-by-step explanation:
Answer:
(64,86.5)
Step-by-step explanation:
find the case where he gets 70 and the case where he gets 79
if his average is 70:
(75+62+85+2x)/5=70
(222+2x)/5=70
222+2x=350
2x=128
x=64
if his average is 79:
(75+62+85+2x)/5=79
(222+2x)/5=79
222+2x=395
222+2x=395
2x=173
x=86.5
Step-by-step explanation:
quisiera ayudarte pero no hablo inglés :(
Sqrt(80) = Sqrt(16) x sqrt(5)
= 4 x sqrt(5)
