Cant fail1. (1 pt) jacques built a house that measured 75 feet long by 30 feet wide. what is the area of jacques’ house? a. 105 ft b. 210 ft2 c. 2,250 ft2 d. 2,255 ft2

Assuming that Jacques' house is a rectangle with the given dimensions, its area is the product of length and width. 
 
                                   A = L x W

Substituting the given values for length and width, 
 
                                   A = (75 ft) x (30 ft) = 2250 ft²

Hence, the house has an area of 2250 ft². The answer is letter C. 

The answer to your question is i think 7

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.