Answer:
Step-by-step explanation:
-7x²=-448
x²=64
x=±8
It is 53°....................
Answer:
I don't know but use this app on your phone called mw and it should help
Step-by-step explanation:
Answer:
I personally have no idea how to do this but quizlet might have the answer
Sorry hope this helps though
Step-by-step explanation:
Answer:
Lacy is 13 and Jack is 52
Step-by-step explanation:
In 3 years their ages will add up to 71 so you have to subtract 6 as there are two of them to get 65. Lacy's age is represented by x and since Jack is 4 times older his age is represented by 4x. So added together their age is 5x. So 5x=65. Then 65/5=13. So 13=x. So Lacy is 13 and Jack is 52 as 13x4 is 52.
