Answer:
10.2cm
Step-by-step explanation:
Perimeter is the sum of the lengths of all sides.
1st side: 9cm
2nd side: 7.8cm
Perimeter: 27cm
Perimeter = 1st + 2nd +3rd side of a triangle
27cm = 9cm +7.8cm + 3rd side
3rd side = 27cm - 9cm -7.8cm
= 10.2cm
Answer:
1/3
Step-by-step explanation:
D is not a terminating decimal because it repeats *hint the dash mark above the 4*
Answer:
Irrational: √2 = 1.4
Step-by-step explanation:
Answer: p(-2)=9
Step-by-step explanation: