First, write the rate as a decimal by moving the decimal point two places to the left from the percent.
r = 5% = 0.05
C = p + rp
C = 30.99 + 0.05 * 30.99
C = 30.99 + 1.55
C = 32.54
Answer: The total cost is $32.54
1. 4n + 28
2. 30-10x
3. 3m+3n
4. 8+2j
Answer:
45 Pennies
14 Nickels
Step-by-step explanation:
1.15 - .43 = .72
72 % 5 = 14.? - 14 nickels
.2 left - 2 pennies
Answer: 280 cm
Step-by-step explanation:
The base of each of the congruent triangles ABD and CBD is BD= 28 cm. The height of each is the perpendicular 10cm.
A=(2)(bh/2) works out to A= bh since the 2/2 cancel
So 10cm × 28cm = 280cm²