Answer:
a = 
Step-by-step explanation:
ab + c = d
- c - c
ab = d - c
divide both sides by b
a =
I hope this helps!!
Answer:
-10x=-100
x=10
Step-by-step explanation:
Answer:
Step-by-step explanation:
74.75 divided by 25
Let the length of the original cardboard be x and width be y.
Area=xy=216
thus y=216/x
after cutting 2 cm from the edges, the dimensions will be:
(x-4) cm by (216/x-4) by 2 cm
thus the volume will be:
V=L×W×H
V=(216/x-4)×(x-4)×2=224
thus solving for x we get:
x=12 or x=18
Hence:
length=18cm width=12 cm
Solution :
According to the question PC magazine conducted a survey and asked its readers to participate their satisfaction with the different brands of the electronic item. Around 9000 readers rated the product from scale 1 to 10.
SO we have to identify the following regarding the survey :
a. identifying the population
-- all the readers of the PC magazine
b. identifying the parameters of the interests
-- the population mean that rated the digital camera
c. identifying the sampling frame
--- all the readers
d. identifying the sample size
-- unknown
e. identifying the sampling design
-- voluntary response
