Answer:
a)6ab
b)5c
c)
Step-by-step explanation:
a)3×2=6 and a×b=ab
then 6×ab=6ab
Answer:
-148/3 or -49.3
Step-by-step explanation:
<u>Solution:</u>
- 3⁸¹ = 3⁹ ⁺ ⁹ ⁺ ⁹ ⁺ ⁹ ⁺ ⁹ ⁺ ⁹ ⁺ ⁹ ⁺ ⁹ ⁺ ⁹ ⁺ ⁹
- 3⁸¹ = 3⁹ x 3⁹ x 3⁹ x 3⁹ x 3⁹ x 3⁹ x 3⁹ x 3⁹ x 3⁹
- 3⁹ = 19683 <u>[Using Calculator]</u>
This means that the Unit digit of 19683 is 3. For each number, multiply the unit's digit of 3⁹.
- 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3
- => 19683
- => <u>Unit digit of 3⁸¹ = 3</u>
Option A is correct.
Answer:
$4.5
Step-by-step explanation:
Let the amount of money
Maria had = x
Nick had = y
All together Maria and Nick had $12.
= x + y = 12
x = 12 - y
After Maria spent 30% of her money and Nick spent 50 % of his money, Maria and Nick were left with the same amount.
30% of x = 50% of y
30/100 × x = 50/100 × y
0.3x = 0.5y
We substitute 12 - y for x above
0.3(12 - y) = 0.5y
3.6 - 0.3y = 0.5y
3.6 = 0.5y + 0.3y
3.6 = 0.8y
y = 3.6/0.8
y = $4.5
Therefore, in the beginning, Nick originally had $4.5
