Answer:
- 4
Step-by-step explanation:
Using the rule of radicals
×
⇔
Simplify using this rule
=
= ×
= 3
Then
- 2 + 2
= - 2(3 ) + 2
= - 6 + 2
= - 4
Tonya purchased 6 new cds for her car cd player. the cd player can hold 6 cds. how many different ways can the cds be arranged?
1 answer:
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Answer:
The number of baseball card to begin with is 143
Step-by-step explanation:
Let The number of baseball cards = x
The number of sold baseball card = 60% of x
= 0.6 x
The number of left baseball card = x - 0.6 x = 0.4 x
The number of card gave away = 30 % of left cards
= 0.3 × 0.4 x = 0.12 x
The number of card left in his possession = 40
So, 0.6 x + 0.12 x + 40 = x
Or, 40 = x - 0.6 x - 0.12 x
Or, 40 = 0.28 x
∴ x = = 142.85 ≈ 143
Hence The number of baseball card to begin with is 143 Answer