ozzie and jia are measuring the mass of two objects the mass of the first object is 0.89 grams. The mass if the second object is 0.9 grams. If each model refers to the same whole, which model shows the correct shading for the comparison of the two decimals?

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Write the expression as a single natural logarithm. 2 in a - 4 in y