Answer:
Q.1
The Answer is Option B) 2 × 10-¹²
So first convert 2 3/4 to improper fraction
2 3/4=8/4+3/4=11/4
11/4a=19 1/4
convert 19 1/4 to improper
19 1/4=76/4+1/4=77/4
11/4a=77/4
multiply both sdie sby 4
11a=77
divide by 11
a=7
Answer:
10% of 45 is 4.5
30% of 45 is 13.5
Step-by-step explanation:
10% of 45 is 4.5 because you can multiply 4.5 10 times to get 45. Because 30% is 3 times the amount as 10%, you can multiply 4.5 x 3 to get 13.5