What is the exact value of cos (-pi/2)

Nth term of sequence 1.5 3 4.5 6 7.5

Jordan types 0.0000000012 into his calculator then presses Enter. Which expression below do you expect the scientific calculator to display? 1.2E10 1.2E-9 12E9 12E-9

How do i do this math question 5x < - 10

There were 300 seats in the school gym. Of the all the seats 120 had stripes and the rest had polka dots on them. What percentage of the seats had polka dots on them?

Once a commercial plane reaches the desired altitude, the pilot often travels at a cruising speed. On average, the cruising speed is 570 miles/hours.

Which expression has a value less than the given expression when x = 5? 3x + 15 2x² x² + 5 3 (x + 5) 4x + 5

find the width of the pathway if a garden measuring 15 meters by 18 meters is to have a pedestrian pathway installed all around it, increasing the total area to 360 square meters

How much will a person pay for 10.8 pounds of bananas at a price of $2.22 per pound

A mans weekly wage was £336 but now he earns £420. what is the percentage change

Y=|x-3|+|x+2|-|x-5|, if 3