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Tju [1.3M]
2 years ago
10

In a baseball card collection, 40% of the cards are worth more than 100$. If 12 cards in the collection are worth more than $100

, how many total baseball cards are in the collection?
Mathematics
2 answers:
Masja [62]2 years ago
8 0
30 Is the answer to your question :)
Helen [10]2 years ago
5 0

Answer:

30

Step-by-step explanation:

12 is 40% of the total number of cards.

12 = 0.4x, where x is total number of cards

/0.4 /0.4

30 = x

30 cards

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What ratio represents the probability of drawing a red card from a standard deck of 52 cards
marishachu [46]
Half of the cards are red and half of them are black
so the answer is 1/2

or you can say that 26 are red and 26 are black
26/52 = 1/2
4 0
3 years ago
The sum of the first term of an ap is 240 and the sum of the next 4 term is 220 find the first term of the ap
Sindrei [870]

Answer:

The common difference is -5/4

T(n) = T(0)  - 5n/4,

where T(0) can be any number. d = -5/4

Assuming T(0) = 0, then first term

T(1) = 0 -5/4 = -5/4

Step-by-step explanation:

T(n) = T(0) + n*d

Let

S1 = T(x) + T(x+1) + T(x+2) + T(x+3) = 4*T(0) + (x + x+1 + x+2 + x+3)d = 240

S2 = T(x+4) + T(x+5) + T(x+6) + T(x+7) = 4*T(0) + (x+5 + x+6 + x+7 + x+8)d = 220

S2 - S1

= 4*T(0) + (x+5 + x+6 + x+7 + x+8)d - (4*T(0) + (x+1 + x+2 + x+3 + x+4)d)

= (5+6+7+8 - 1 -2-3-4)d

= 4(4)d

= 16d

Since S2=220,  S1 = 240

220-240 = 16d

d = -20/16 = -5/4

Since T(0) has not been defined, it could be any number.

7 0
3 years ago
X/9=4/y=y/36 solve for x
Vlada [557]
This is not possible, unless x = 1.
4 0
3 years ago
bru you just times the too numbers then you divide the answer by 2 then you times that by 4 then that your answer BIG BRAIN 1694
Salsk061 [2.6K]

Answer: SHEEEESHOOOOOO yesssirrrr big brainnnnnnn :clap clap:

6 0
2 years ago
Simplify the sum. Answers in the attachment. Will award brainliest.
pychu [463]

Answer:

your answer is C.

Step-by-step explanation:

7 0
3 years ago
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