Answer: 21.00
Step-by-step explanation: 48-27 = 21
B. 6.6 kg explanation: 4 x 8.25 = 33 divded by 5 is 6.6
6.4x10^5 + 0.36x10^5 = 6.76x10^5, or 676,000
Answer:
a=8, b=0 and c=-6
Step-by-step explanation:
see pic for expln
3x-5y=4------eq1
4x+3y=15-------------eq2
multiply 3 to first eq and 5 to second eq.
9x-15y=12
20x+15y=75
subtract both eqs
29x=87 x=3 so put x in eq 1
3(3)-5y=4
5y=5
y=1