How to write 19*1,000,000 in exponents

Which sentence could be used to describe the equation 105 = 78 + y? The sum of 78 and a number is 105. The number 105 is more than 78. The sum of 105 and 78 is a number. Seventy-eight is more than the number one hundred five.

Solve for x. -1/2 (x + 5) = - 10 A) - 25 B) - 10 C) 0 D) 15

A train travels 200 miles in 4 hours at a constant rate. What is the constant rate of change for the train in miles per hour?

A sugar donut has 110 more calories than twice the number of calories in a slice of brown bread. Together they contain at least 194 calories. What is the smallest possible number of calories in the slice of bread

Lionel is planning a one-day outing. The Thrill amusement park charges an entry fee of $40 and an additional $5 per ride, x. The Splash water park charges an entry fee of $60 and an additional $3 per ride, x.

If y varies directly with with x and y=20 when x = 2.5, what is the value of y when x = 8? (type the numerical value of x only)

If x1=4, compute the value of x2 if the mean is 1

30 people go for dinner it costs £240.93 how much should each person pay

Dan built deck that is 5 feet long and 5 feet wide He built another deck that is 5 feet long and 7 wide. He built a third deck that is 5 feet long and 9 feet wide. How do the areas change?

It takes Anjali eight minutes to wax a floor. Shayna can wax the same floor in 12 minutes. Find how long it would take them if they worked together.