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Write down two reasons for using statistical models

There are many reasons for using statistical models. Some examples include: 1) To simplify a real world problem To improve understanding and describe a real world problem, for example understanding the relat...
LD
Answered by Laura D. • Maths tutor
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The triangle ABC is such that AC=8cm, CB=12cm, angle ACB=x radians. The area of triangle ABC = 20cm^2. Show that x=0.430 (3sf)

From the equation of the area of a triangle, Area = 1/2 AC CB sin(C) 20 = 1/2 * 8 *12 * sin(x) => sin(x) = 0.416666... => x = 0.430 to 3sf
LD
Answered by Laura D. • Maths tutor
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What is the difference between mRNA and tRNA?

RNA stands for riboncleic acid. mRNA is messenger RNA. This type of RNA is a linear polymer involed in a part of protein symthesis called transcription. It allows the DNA code to be taken outside the nucleus...
SL
Answered by Sophia L. • Biology tutor
16265 Views

What properties does water possess that make it an essential molecule for life?

· Solvent – Good for polar substances (salts, sugars, simple alcohols) · Heat Capacity – Energy to raise 1kg water by 1 o K. Keeps blood temperature stable · Heat of Vaporisation – Good for sweat, absorbs a ...
CB
Answered by Connor B. • Biology tutor
5302 Views

For rectangles of area 100 m^2 what is the perimeter of the rectangle with the smallest perimeter?

100=ab P=2a+2b P=2a+200/a dP/da=2-200/a^2 dP/da=0 implies 2=200/a^2 a^2=100 a=-10,10 a is a length so take positive a, a=10 so b=10 gives perimeter 40m Notice a=10 b=10 is a square Squares are rectangles of ...
DN
Answered by Daniel N. • Maths tutor
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