Answer:
136
Step-by-step explanation:
Sum of 5 and 3: 8
Sum of 8 and 9: 17
17 * 8 is 136
Answer:
Step-by-step explanation:
13 × 20 = 13 tens × 2 tens
= 13 × 2 × 10 × 10
= 2600
Answer:
4 red marbles
Step-by-step explanation:
green marbles = 9r
red marbles = r
9r + r = 40
10r = 40
r = 4 = red marbles
B, x=6
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