Answer:
72.3 - 39.1 = 4tens - 7ones + 2tenth
Step-by-step explanation:
Give the expression 72.3 + (-39.1)
opening the parenthesis:
= 72.3 + (-39.1)
= 72.3 - 39.1
Breaking the decimal values into place values
72.3 = 7tens + 2units + 3tenth
72.3 = 7(10)+2(1)+3(1/10)
72.3 =70+2+0.3
Similarly for 39.1
39.1 = 3tens + 9units + 1tenth
39.1 = 3(10)+9(1)+1(1/10)
39.1 =30+9+0.1
72.3 - 39.1 = 70+2+0.3 - (30+9+0.1)
72.3 - 39.1 = 70+2+0.3 - 30-9-0.1
72.3 - 39.1 = 70-30+2-9+0.3-0.1
72.3 - 39.1 = 40 - 7 +0.2
72.3 - 39.1 = 4tens - 7ones + 2tenth
Answer:
$2.40
Step-by-step explanation:
5 sandwich = $12
1 sandwich = 12 ÷ 5 = $2.40
Answer:
37
Step-by-step explanation:
-3 ^2 = 9
9 * 5 = 45
45 - 8 = 37
Answer:
If the circular race track is a circle, they are asking you to find the area of a circle.
Step-by-step explanation:
Area (A) = π This sign π is known as pi or also known as 3.142. What you need to do is pi x radius squared. Hope this helped.