What is the variable x in 40+10x=5x-30

Write a two-operation expression that equals 31 when evaluated for x = 5

How do you write the square root of 3 times the square root of 6 in simplified radical form?

If a single card is drawn from a standard 52-card deck, in how many ways could it be a diamond or a face card (a face card is a Jack, Queen, or King) ?

There were 81 cupcakes. One-ninth are strawberry and 1/3 are vanilla. The other cupcakes are all chocolate. How many chocolate cupcakes are there?

To hi a ball over a tree, a golfer hits the ball with a path that is modeled by h = - 16t^2 + 80t where h is the height in meters and t is the time in seconds.

1. The county fair charges $1.50 per ticket for the rides. Jermaine bought 20 tickets for the rides and spent a total of $48.75 at the fair. Jermaine spent his money only on ride tickets and fair admission.

Paige invested 1200 at an interest rate of 5.75% compounded quarterly. Determine the value of her investments in 7 years.

a plants height is 1.6 times it age. write an equation for the situation. Tell what each variable you use to represents

The human body generates about 400 BTUs of body heat per hour while active. If an office that is 18 ft * 38 ft * 12 ft has 12 workers, how many BTUs per cubic foot do they produce in 5 hours? (to the nearest tenth) A) 0.2 BTUs/ft3 B) 0.

At an elementary school, the fourth-grade class is planning a field trip to the science center. The roster shows 113 students who will attend the event. School-district rules specify that there must be one adult chaperone for every 10 students.