Find the sum of the first 6terms of the series 3-6+12-24 + ...

-65

-64

-62

-63

Do you use the greatest common factor or the least common multiple to add two fractions? In this example what is it? 4/5+5/6 least common multiple of 3 or greatest common factor 30 or least common multiple 30

A tourist sailed against the current on a river for 6 km, and then he sailed in a lake for 15 km. In the lake he sailed for 1 hour longer than he sailed in the river.

Solve for x 27=9^x-1

How to write 12+n=19 in a sentence?

Harriet is comparing the costs of calling cards. To use card A, the cost is $1.00 to connect and then $0.04 per minute. To use card B, it costs $0.65 to connect and then $0.06 per minute.

The sum of x and 9 is divided by 2. That quantity is equal to 3x

Joe has a spinner with labeled 1, 1, 2, 2, 4. If he spins 20 times, how many will be 2?

How do i find the zero of (x-10) (4x-3) = 0

A rectangle has a height of 5x and a width of x + 2, express the area of the rectangle.

Richard buys, fixes, resells small devices, like the Mir487, which consistently needs a transistor replaced. He can buy the transistor for $8.10 and a broken Mir487 for $51.90. Once fixed, he resells the new Mir487 for $224.96.