2/7 = / 56 find the sum simply when need

In a group of 21 students, 8 students take Art courses, 7 students take Music courses. Two students take both courses. A student is chosen randomly from this group.

If you pay $ 34.02 for a jacket that includes a 5% sales tax, what is the price of the jacket before the sales tax?

A club had a total of $1,520.50 in its bank account. At a budget meeting they decide to set aside 0.12 times the total amount to travel. How much will they set aside to travel?

Jessica rides the bus 8 and 4/5 miles each day what is the total number of miles she rides in 21 days?

Kendra has a math test every 12 school days and a vocabulary test every 9 school days. She had both a math and a vocabulary test today. The next time she will have both tests on same day will be in? School days.

At a rate of 9.30 yards per second how long would it take someone to run 100 yards

How do I evaluate the indefinite integral ∫sin (3x) ⋅sin (6x) dxintsin (3x) * sin (6x) dx?

What is the simplified value of the expression below? 4.5 - 5.9 divided by 0.2 x 3 - 0.2

Fe + Zn²⁺ → Fe²⁺ + Zn. Which element is being reduced?

A 150-pound person burns 6.3 calories per minute when walking at a speed of 4 miles per hour. While walking, this person eats a snack that has 90 calories. This snack subtracts from the calories burned while walking.