Answer:
44
Step-by-step explanation:
these triangles are similar, so the proportions of the sides will be the same. Since the small triangle's proportions are 4:4, the bigger one's will be 44:44
Answer:
Associative property of addition: a+{b+c=}{a+b}+c
Answer:
x= -7
Step-by-step explanation:
You need to first add 5 to the -5. Even though the - is a subtraction sign, you can still count it as a subtraction sign. In order to balance it out again, so you add the 5 to the 16. 16+5=21, so the equation would be -3x=21. To get x by itself, you divide by -3. So, -3x/-3 and 21/-3. That gets rid of the -3, and you get a -7 as an answer.