Question 2The interior angles of a pentagon are (2x + 5)°, (x + 20)°, x°, (3x - 20)° and (x + 15)°. Find the value of xA.80°B.70°C.65°D.40°E.30°Objective Show full explanation
Question 3A train travels 60km in M minutes. If its average speed is 400km/h, find the value of MA.15B.12C.10D.9E.7 Objective Show full explanation
Question 4A baker used 40% of a a 50kg bag of flour. If 1/8 of the amount used was for cake, how many kilograms was used for cake?A.2 1/2B.6 1/4C.15 5/8D.17 1/2E.19 1/3Objective Show full explanation
Question 5Find the average of the first four prime numbers greater than 10.A.20B.19C.17D.15E.13Objective Show full explanation
Question 6Find the mean deviation of 6, 7, 8, 9 and 10.A.1.2B.1.5C.2D.8E.10Objective Show full explanation
Question 7The variance of a given distribution is 25. What is the standard deviation?A.125B.75C.25D.5E.3Objective Show full explanation
Question 8Express 7/19 as a percentage, correct to 1 dpA.2.7%B.3.7%C.24.1%D.36.8%E.42.2%Objective Show full explanation
Question 10A chord of a circle of radius 26cm is 10cm from the center of the circle. Calculate the length of the chord.A.16cmB.27.86cmC.32cmD.40cmE.48cmObjective Show full explanation