Answer:
2 books
Step-by-step explanation:
3 1/2 ÷ 1 3/4
Convert the mixed numbers to improper fractions.
7/2 ÷ 7/4
Keep Change Flip
7/2 × 4/7
28/14
2 books
Answer:
C = 6
D = 10
Step-by-step explanation:
C + 5 = 11
C + 5 -5 = 11 -5
C = 6
D + 4 = 14
D + 4 -4 = 14 -4
D = 10
Answer:
a. x = 3/a
Step-by-step explanation:
Add all like terms on left hand side of the equation:
5 ax + 3 ax => 8 ax
Bring like term 4ax on left hand side
8ax - 4ax
=> 4ax
Therefore we get 4ax = 12
ax = 12/4
ax = 3
x = 3/a
Answer:
a² + b² = 22
Step-by-step explanation:
(a + b)² = a² + 2ab + b² ← substitute a + b = 6 and ab = 7
6² = a² + 2(7) + b²
36 = a² + 14 + b² ( subtract 14 from both sides )
22 = a² + b²
Answer:
O
Step-by-step explanation:
