1. What do you notice about the relationships between the measures of vertical answers? Use complete sentences

2. What do you notice about the relationship between the measures of linear pair angles use complete sentences
Answer ASAP
2 sentences each

Can someone me with this problem i don't understand i need

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.