math calculators

Which of the following is a real zero, to the nearest hundredth, between - 3 and - 2 for the function f ( x ) = 2 x 3 + 5 x 2 - 3 x - 1? [Use a graphing calculator.] => - 2.25 or - 2.55 or - 2.50 or - 2.95..

George has 79 marbles. He gave Kelly 46 marbles. Choose a number sentence that helps you to calculate the number of marbles left with George. => 79 = 46 × n or 79 = n - 46 or 79 - 46 = n or 46 + 79 = n..

At a dolphin show in Singapore City, a dolphin jumps to a height of 4 feet into the air and dives back into the water. Calculate t , the time taken by the dolphin to reach the water level, if s , the height it jumps to, is given by s = ( 1 8 ) a t 2 , where a = 8. => 2 sec or 4 sec or 3 s..

There are 6 pieces of candy in a bag. 3 pieces are eaten. Identify the number sentence used to calculate the number of candies left in the bag. => 3 + 3 = n or 6 = n + 3 or 1 - n = 0 or 6 + 1 = n..

The scores of 10 students in mathematics and statistics examination are shown in the table. Calculate the coefficient of correlation between these two subjects and describe the relationship. Student A B C D E F G H I J Scores in Mathematics 86 96 72 99 90 88 93 78 82 8..

Which of the following needs to be calculated to find the number of floor tiles required to cover a bedroom floor? => perimeter or length or width or area..

Joe takes 6 slices of bread in his breakfast everyday. Calculate the number of slices of bread he eats in a week. => 47 or 42 or 37 or 57..

The line graph shows the variation in price of a certain product in the consecutive years. Calculate the average price of the product. => $50 or $120 or $100 or None of the above..

Mike buys a calculator for $22.42. Estimate the sales tax at the rate of 3%. => $3 or $6.6 or $66 or $0.66..

Use calculator to find sin 40° and round off to the nearest hundredth. => 0.54 or 0.94 or 0.87 or 0.64..