Answer:
D
Step-by-step explanation:
<em><u>To find the biggest 4-digit number which is a perfect square, we have to take the square of biggest 2-digit number. ∴ The biggest 4-digit number which is a perfect square = 9801.</u></em>
z = -26
6+z/10= -2
6 + z = -2 (10)
z = -20 - 6
-24°F
-18°F + 13°F - 19°F
= -5°F - 19°F
= -24°F
