The process used in the picture is cross multiplying. Make an x through the numbers and multiply them by each other. That's why 21 was multiplied by 14 and 49 was multiplied by n. The value of n is unknown, so it simplifies to 49n, and 14*21=21.4. So basically to recap, make an x, multiply the terms that are diagonal from each other, write both of the answers next to each other, and put an = sign in between them. If you don't understand I can try to explain differently ☺
Answer: You didn't add a picture to help
Step-by-step explanation:
Once you do, I would be glad to edit my and help.
Resolve os que estão entre () depois las letras F
lo resultado do () faz a conta com o +4 e lo resultado seras la resposta.
sera lo valor de X
The item has 42/140 * 100,or 30% of its initial value. That means that it lost 70% of its value, so 70% is the percent decrease.
