Answer:
615.44
Step-by-step explanation:
If diameter = 28, then radius is 14
Area = 3.14 x (14x14) =615.44
Per cent means out of 100. 47/100
Answer:
Kate's electric bill will be $9 for this month for bulb use only.
Step-by-step explanation:
Given:
Electricity bill lass month from bulb use = $12
Using new bulbs percent decrease in electricity = 25%
We need to find this month electric bill for bulb use.
Solution:
First we will find the reduction in bill after using new bulbs.
reduction in bill after using new bulbs can be calculated by percent decrease in electricity using new bulb multiplied by last month Electricity bill from bulb use only.
framing in equation form we get;
reduction in bill after using new bulbs =
Now we will find this month electric bill for bulb use only.
this month electric bill for bulb use only can be calculated by subtracting reduction in bill after using new bulbs from last month electric bill for bulb use only.
framing in equation form we get;
this month electric bill for bulb use only =
Hence Kate's electric bill will be $9 for this month for bulb use only.
1. The statement "y varies inversely as x means that when x increases, y decreases by the same factor. In other words, the expression xy is constant: xy = k.
2. increase
3. One type of variation is inverse variation, and two variables are said to vary inversely if when one increases the other decreases and vice versa. The formula we use to indicate that a variable, y, varies inversely with a variable, x, is y=kx y = k x , where k is a constant called the constant of variation.
A "True Proportion" is an equation which states that two ratios are equal.