<span>If you tripled the slant height and radius of a cone, the
formula to find the modified surface area would be 6 and 6. I am hoping that this
answer has satisfied your query about and it will be able to help you, and feel
free to ask another question if you’d like.</span>
Answer:
area of trapezium: -
formula...
½(sum of parallel sides)×height=area
=>240=½(12+x)×12
=>240=(12+x)×6
=>240=60+6x
=>6x=240-60
=>6x=180
=>x=180/6
=>x=30cm
therefore, the value of x is 30 cm.
Step-by-step explanation:
hope it helps u
Answer:
Option C
Step-by-step explanation:
Given that for a random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard deviation of 320 square feet.
X, the sizes of houses is Normal
Hence sample mean will be normal with
Mean = 1880
and std dev = 
For 90% confidence interval critical value for t with degree of freedom 19 is
1.328
Confidence interval upper bound
= mean + margin of error
= 
Option C is right
You would just subtract/add like you normally would from left to right because its a subtract and add operation.
Hope that helps :)
Additive inverses, because their sum is 0
