2a+3r+1.5p=29.75 (1) a+r+p=13.50 (2)

a+3r+4p=29.00 (3)

Eliminate a by multiplying equation (2) by -1 and adding it to equation (3).

What is the resulting equation?

4r + 5p = 42.50

2r + 3p = 15.50

2r + 3p = 42.50

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.

This polygon has 4 sides
180(4-2) = 180(2) = 360 degree
80+90+2x + 3x = 360
170+5x = 360
5x = 190
x= 38
measure of angle t is 2(38)= 76
the answer is c. trust me
hope this !

7x the number of visitorsex. 3 visitors would be 7 x 3 =21$ total