Calculate then write in the Scientific notation

138x10^ (-1) + 7, 8 x 10^ (6) + 52 x10 ^ (3)

How do you work out 12x^2-7x-10=0

A rectangular park that measures 245 yards by 420 yards has a sidewalk around it. What is the least distance a person must walk to go around the park once? What is the least distance a person must walk to go around the park once?

What model describes the relationship between miles driven and the total cost of a rental car when you pay $50.00 per day and $0.25 per mile?

Which is the slope of the line x=9

What does the expression d+1.5 represent?

Penn buys 3 large sandwiches to serve at a party. Penn cuts the sandwich into 1/4 equal pieces to serve. Penn didn't get any of the sand-which Write an equation to represent the number of guests served if there were no leftovers.

Andy's soccer team scored 5 goals in each of 7 games and 6 goals in another game. How many goals did Andy's team score? Write an equation and solve the problem.

104.95x+18.95 (125-x) = 6926.75

Davette wants to buy flannel sheets. She reads that a weight of 190 grams per square meter is considered high quality. Davette finds 3 options, option 1 is 1100 g of flannel in 6 square meters $45, option 2 is 1260 g of flannel in 6.

Estimate 9.586+3.097 then give me answer