Answer:
28
Step-by-step explanation:
7+21=28
a-7=21
The answer is A they can only be in different orders
Step-by-step explanation:
b=4, so
7²+4²=c²
49+16=c²
65=c²
Sq root both sides
8.06=c
D-20 would be the variable expression for the amount of money Mia has.
Answer:
3. 8.60 units
Step-by-step explanation:
Distance from point M(-2, 4) to point N(5, -1) can be calculated using the distance formula, 
M(-2, 4) => (x1, y1)
N(5, -1) => (x2, y2)
Plug in the values into the formula




