Answer: By adding, subtracting, multiplying or dividing both sides until you are left with the variable on its own. Don't multiply or divide by a variable unless you know it is always positive or always negative.
Step-by-step explanation:
Answer:
Total Sold potatoes =213
Paid price=213*0.47=100.11
Sold price=213*0.88=187.44
Lost potatoes=2.82
=187.44-100.11-2.82
Profit =84.51
Answer:
Step-by-step explanation
- Amount of discount: 20%= 0.20; 0.20×42= $8.4
- Sale price: $42-$8.4= $33.6
For interest question, plug in the values:
P= $3200
r= 3%÷100 = 0.03
t= 4 years
Calculate:
I=Prt
= 3200×0.03×4
=$384
Answer:
the number of T-shirts bought was 5
Step-by-step explanation:
After using a debit card, to purchase several t-shirts. Your account balance after buying the t-shirts changes by -$30.60. The negative sign means there was a total debit of $30.6 after your transactions. For each t-shirt you purchased , the changes in your account balance was -6.12. If you purchased n T-shirts, the changes would be
n × -6.12 = -6.12n. This means a total debit of 6.12n for all the T-shirts you bought. Therefore,
6.12n = 30.6
n = 30.6/6.12 = 5
So the number of T-shirts bought was 5
Answer: 25.13cm is the circumference of the diameter of 4cm.
