Question 3 of 10 Which key difference do experiments have that correlation studies do not have? A. The sample size is much larger, allowing for better proof of causation. B. At least one variable must be discrete. C. The sample is drawn randomly from the population. D. The researcher makes a change in one of the variables to see what is affected.

Work out the value of x in the equ (1)/(8^(17))=8^(x)

Fully simplify 8x+5y+3+3y-3x

What two values can d have if d^(2)=9 ?

A rectangle and a square are joined together to make a larger rectangle with a perimeter of 40cm . If the square has an area of 49cm^(2) , what is the area of the original rectangle? Give your answer in cm^(2) .

The ratio of black cars to green cars in a car park is 71:53 . Rewrite this as an equivalent ratio of the form n:1 . Give any decimals in your answer to 2 d.p.

Calculate (3)/(4)+(2)/(5) . Give your answer as a mixed number.

Solve 13=3x-5 x=dots

a, CIM gitr code be som lwän diverg AA x A=4x^(2)y+x^(2)-6x+13+4xy

Write 2(2)/(6) as an improper fraction. Give your answer in its lowest terms.

Complete the numerator to write 1(3)/(5) as an improper fraction. Mixed number: 1(3)/(5) Improper fraction: (2])/(5)