What is x, y and z? show your work

x - y + 9z = - 27

2x - 4y - z = - 1

3x + 6y - 3z = 27

The area of triangle ABC is 31 - square centimeters. What is the measure of side b? 45° 512 cm 102 cm

The length of the line segment ac is 8x-9 what is the value of x

Classrooms on one side of the drama building are all numbered with consecutive even integers. if the first room, the room with the smallest classroom number, on this side of the building is numbered k , write an expression in k for the sum of the

What is the probability that out of 175 chicks hatched on Peeper Farm, at least 90 will be female?

it is estimated that on a daily basis 15% of the custoners at a local supermarket use the express checkout. What is the probability that one of the first five customers on a given day uses the express checkout?

If x is too small that its square and higher powers be neglected then (1+3x) - 2=?

A ranger spots a forest fire on a 24-meter observation tower. The angle of depression from the tower to the fire is 29°. To the nearest meter, how far is the fire from the base of the tower?

What is the common difference in the arithmic sequence 30,27,24,21,18

600000 in standard form

What are the real and imaginary parts of the complex number? -6+2i Enter your answers in the boxes.