emmabarnett817

25.10.2019 • 

Mathematics

Brock is training for a crossfit competition. he began the training by completing pull-ups and box jumps. originally, his training plan had him completing pull-ups and box jumps at a ratio of 5: 4. after two months of training, he decided to focus on his leg strength and adjusted his ratio to 2: 7. if he completed 53 box jumps at the end of his training, how many pull-ups did he complete in the initial stage of training?

Ответ:

tre9990

25.01.2022

Mathematics

---

I hope this helps you

x^2-10x+21=0

(x-7). (x-3)=0

x-7=0 x= 7

x-3= 0 x= 3

---

0,0(0 оценок)