Solve by substitution

13x-4y=38

*-6y = - 54

Which is a rational number between - 12 and - 11.25? A.) - 12.45 B.) - 11.45 C.) 11.45 D.) not given

Is 42ft equal to less or greater than 180 inches

The half-life of Palladium-100 is 4 days. After 16 days a sample of Palladium-100 has been reduced to a mass of 3 mg. What was the initial mass (in mg) of the sample? What is the mass 8 weeks after the start?

1/2*40=2x+8 what is the answer

Halle has 36 feathers, 48 acorns, and 60 agates. She wants to put all of these items into bowls with the same number of feathers, acorns, and agates in each bowl and none left out. What is the maximum number of bowls she can put the items into?

What is the value of x if (x+60) ° is supplementary to (x+10) °?

12x^2y-6xy+4x^2 divided by 2xy

Solve and graph x-y+2=0

Would a domain restriction from 0 to pi produce an inverting function for the function f (x) = cos x? Explain.

Which trinomial is a perfect-square trinomial? A. 9y^2-6y+4 B. 2y^2-2y-1 C. 10y^2-20y-4 D. 4y^2-4y+1