Ms. gillespie is comparing the average score on the final math exam in her eighth grade class to the school average score. her class average is 78.6854 percent. what is this percent rounded to the nearest tenth? a. 78.8 b. 78.5 c. 78.6 d. 78.7

tenth is the first place after the decimal so we need to look at the 2nd place after the decimal to know where to round (hundreths)  If it is 5 or greater the tenths place goes up.

78.6854   we look at the 8 (it is greater than 5) so it rounds to 78.7

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it