Answer:
Step-by-step explanation:
If you are multiplying similar terms, just add their exponents, and if you're dividing similar terms, just subtract the exponents.
Answer:
b=73a-121
Step-by-step explanation:
a-b/12=11-6a
Let's start solving
Cross multiply
a-b=12(11-6a)
a-b=121-72a
Collect like terms
a+72a=121+b
73a=121+b
Substrate 121 from both sides
73a-121=b
Therefore b=73a-121
Which means that b has been made the subject of formula
Answer:
b=3/4
Step-by-step explanation:
((3/4)x)/2=9/32
Answer:
20 stacks of 5 pennies weight 0.33 pounds
Step-by-step explanation:
<u>First, we need to calculate the weight in kilograms of 20 stacks of 5 pennies:</u>
20 stacks= 0.0075*20
20 stacks= 0.15 kg
<u>Now, we can determine the weight in pounds:</u>
1kg = 2.2 pounds
0.15kg = ?
Weight in pounds= (0.15*2.2)/1
Weight in pounds= 0.33 pounds
20 stacks of 5 pennies weight 0.33 pounds