63 = 9k
divide by 9 on each side to get k by itself
k = 7
Answer:
b
Step-by-step explanation:
It's the1st: 4 cm/10 cm because:
4/10 = 2/5 . and because they have the SAME UNIT (cm)
Answer:
-x² + 8x - 7
Step-by-step explanation:
Step 1: Write expression
(7 - x)(x - 1)
Step 2: FOIL (First Outside Inside Last)
7x - 7 - x² + x
Step 3: Combine like terms
-x² + 8x - 7
Answer:
45
Step-by-step explanation:
corresponding angles are congruent
3 and 7 are corresponding
