The diagram shows 3 identical circles inside a rectangle the radius of each circle is 2 mm

Use the multiplier method to incrases £258 by 43%

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20