4x+9Y=-19

-4X-7=13

Solving systems of equations using any method

x= -4.975

y= 0.1

Step-by-step explanation:

- 4x- 7 = 13 we may assume as eq 1

4x+9y = -19 this is eq 2

eq 1+2,

9y-7= -6

9y=1

y=0.1

y=0.1 in eq 1,

4x+9(0.1)= -19

4x= -19.9

x= -4.975

step-by-step explanation:

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere