Solve the linear equations

-2x+5y=39

2x-3y=-25

Three sides of a triangle measure 10m, 12m, and 20m. Find the largest angle of the triangle to the nearest degree.

Sometimes populations change over time. Generate six samples for one year after the initial samples. Identify the ratio of the average number of bass to the average number of fish in the sample. 1:5 1:4 3:10 9:20

DBE is obtained by enlarging ABC. If the area of ABC is 3 square units, what is the area of DBE? A. 27 square units B. 24 square units C. 12 square units D. 9 square units

Teresa is maintaining a camp fire. She has kept the fire steadily burning for 4 hours with 6 logs. She wants to know how many logs she needs to keep the fire burning for 18 hours.

What is the constant term in the expression 5x2 + 7x + 4?

What is 15x plus 6x?

When y is 3 and x is 5 what's the constant of variation

Find the value of c so that (x+1) is a factor of the polynomial p (x). p (x) = 2x^4-5x^2+cx+1

A company ordered 10 boxed lunches from a deli for $74.50. each boxed lunch cost the same amount. which equation represents the proportional relationship between y, the total cost of the nixed lunches and x, the number of boxed lunches? A) 7.

Change the following numbers into percent 0.05