Multiply.

(21) ⋅ (-7)

-147

-14

14

147

Tickets to the concert were $2.50 for adults and $1 for students. $1200 was collected and 750 tickets were sold. Write a system of linear equations that can be used to find how many adults (a) and how many students (b) attended.

The area of a square is 64n^36 units. What is the side length of one side of the square? 8n^6 8n^18 64n^6 64^18

Need steps to; the number 60 is 40% of? an assignment is completed by 32 clerks in 22 days. assuming that all the clerks work at the rate of speed, the number of clerks that would be needed to complete this assignment in 16 days is?

The coordinate grid shows the plot of four equations. A coordinate plane is shown with four lines graphed. Line A crosses the x axis at negative 3.2 and has a slope of 4. Line B crosses the x axis at 3 and the y axis at 6.

While retreating, Fencer X parries Fencer Ys attack and ripostes, touching Y on the valid surface, which is registered on the machine. X retreats then falls; Ys remise arrives on the valid surface, which is registered on the machine?

Y=65x x is the time in hours y is the number of miles What is the rate/slope?

Adam's goal is to practice piano for 200 minutes every week. Which practice schedule would allow him to meet his goal?

Ray pay $812 to rent music equipment that costs $28 per hour. How many hours did he have the equipment?

What's the slope for the density of water?

In a sample of 88 children selected randomly from one town, it is found that 8 of them suffer from asthma. find the p-value for a test to reject the claim that the proportion of all children in the town who suffer from asthma is equal to 11%.