Which type of study would be best suited as a substitute for a risky controlled experiment? (1 point) A .a simulation
B .a field study
C .systematic observations
D .the scientific method

Y=‐1x + 7 if y has a value of ‐24 what is the value of x?

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true