Answer:
20
Step-by-step explanation:
To find this, we need to figure out what 1/5 is as a decimal
5/5 = 1, so 5 groups of 1/5 equals 1
Multiply this by 4, 20 groups of 1/5, or 20/5 = 4
Now we confirm this
1/5=0.2
4/0.2=20
So it is true
Hope this helps!^^
Answer: Choice D)
S(x) = 6x^2 - 20x
-----------------------------------------------
-----------------------------------------------
Explanation:
x = side length of base
x*x = x^2 = area of base
The top also has an area of x^2 since the base and top are both congruent squares. The total base area is x^2+x^2 = 2x^2
The height h is 5 inches shorter than the base, so
h = (base length) - 5
h = x-5
Each lateral side is of area h*x = (x-5)*x = x^2-5x
There are 4 lateral sides
Total lateral area = 4*(area of one lateral side)
Total lateral area = 4*(x^2-5x)
Total lateral area = 4*x^2-4*5x
Total lateral area = 4*x^2-20x
Add the total lateral area (4x^2-20x) to the total base area (2x^2)
Doing so gets us
S(x) = Total Surface Area
S(x) = (Area of bases) + (area of lateral sides)
S(x) = (2x^2) + (4x^2-20x)
S(x) = (2x^2+4x^2) - 20x
S(x) = 6x^2 - 20x
which is why the answer is choice D
Answer:
Step-by-step explanation: Type 1 error is the error of rejecting a true null hypothesis or giving a false positive conclusion while type 11 error is the non rejection of a false null hypothesis.
The type 1 error for this question is: The mean CO2 is lower in 2010 than in 2004. While the type 11 error is:The mean C02 is higher in 2010 than In 2004. The consequences of making a type 1 error is that it will lead to a misguided information, while the consequences of making a type 11 error is that it could lead to loss of lives . The appropriate alpha level to use is 0.01, the reason is because the level of confidence needs to be high when it comes to health issues.
Answer:
B) 6<x<90
Step-by-step explanation:
48+42=90
48-42=6
There will be a number greater than and a number less than x.
90>6
6<x<90
Hope this helps :)
Answer:
20/18
Step-by-step explanation:
Multiply both terms by the same value and you get an equal ratio.
10*10
9*9
100/81 is a ratio equivalent to 10/9
Hope this helps!
