The diagram shows the dimensions of Mr. Green's garden. A bag of fertilizer costs $3 and covers an area of about 50 square feet. What will be the cost for Mr. Green to fertilize his garden?​

Standard deviation is best described as

A. the difference between the number and the mean.

B.the sum of the differences between the numbers and the mean.

C. the square root of the sum of the differences between the numbers and the mean squared and divided by the number of terms.

D.the square root of the mean divided by the Z-Score times the sum of the numbers.

Step-by-step explanation:

just multiply the numbers

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.