Answer:
a. 60 centimeters
b. 67 centimeters
Step-by-step explanation:
a.
12 × 4 = 48
(6 × 4) ÷ 2 = 12
48 + 12 = 60
b.
7 × 10 = 70
(2 × 3) ÷ 2 = 3
70 - 3 = 67
15 + 7 + 9 + 7 + 4 + 4 + 3 + 3 = 52
Answer:
The statement is true
see the explanation
Step-by-step explanation:
we have the proportion

we know that
To solve the proportion multiply in cross
so


therefore
The statement is true
Answer:
30
Step-by-step explanation: