Ihave to solve this question! 15 points here is a test for all of you a> if items a + b = $ 25 b> and items b + a + c = $46 c> and items b + b + b = $30 d> and item a = $ 15 what is item c ? find the answer by using only two of the lettered lines. ex: " you can find the answer by using lines a> and b> and doing this with them." said the unknown sranger typing an answer.

Malia is observing the velocity of a cyclist at different times. after two hours, the velocity of the cyclist is 15 km/h. after five hours, the velocity of the cyclist is 12 km/h. part a: write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist at different times. show your work and define the variables used. (5 points) part b: how can you graph the equations obtained in part a for the first 12 hours? (5 points) if you can try and make this as little confusing as you can

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'