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Fed [463]
1 year ago
12

A bad contains 15 balls of which X is red. Write an expression for the probability that a ball drawn from the bad is red. When 5

more red balls are added to the bag, the probability becomes 3/4. Find the value of X.

Mathematics
1 answer:
antoniya [11.8K]1 year ago
5 0

Answer:

10

Step-by-step explanation:

The current probability of picking a red ball is \frac{x}{15}. When 5 more balls are added, the probability is 3/4. We can write a ratio for this problem:

\frac{x+5}{15+5} = \frac{3}{4}

When using cross multiplication to solve this, you get 3 * 20 = 4(x+5).

60 = 4x + 20

40 = 4x

x = 10 red balls

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The common hamster has 20 chromosomes. How many different types of hamster offsprings could form
LuckyWell [14K]

Answer: How many different types of hamster offspring's could form

Answer:5 Golden hamster, grey dwarf hamster, Chinese hamster, winter white  dwarf hamster, roborovski dwarf hamster.

Step-by-step explanation:

I really hope this helps

7 0
2 years ago
Bob and Sue enter a race. Bob runs an average of 12 kilometers per hour, and Sue runs an average of 8 kilometers per hour. If Bo
solniwko [45]
Bob = 12 x T
Sue= 8 (T +2)

12T = 8T + 16
12T-8T=8T-8T +16
4T = 16
4T/4 = 16/4
T= 4 HOURS

PLUG T BACK INTO
12(4) = 8(4) + 16
48=48

DISTANCE = 48 kilometers
5 0
3 years ago
Read 2 more answers
According to the table, if Akiko Buys 242 shirts, predict how many would be white.
Keith_Richards [23]

The answer would be 67 white T-shirts because there are not a lot of white t-shirts. If you didnt have a lot, then you would buy more of thta thing.

4 0
3 years ago
20 copies of the school yearbook together weigh 50 lb what is the weight of each book
dedylja [7]

Answer:

2.5 pounds per book

Step-by-step explanation:

Set up a proportion

20 copies / 50 pounds = 1 copy / x pounds

Cross multiply

20x = 50

Divide both sides by 20

x = 2.5 pounds


I hope this helped and please mark me as brainliest!

6 0
2 years ago
56 ÷ 4 i need help please help me asap
PtichkaEL [24]

Answer:

14

Step-by-step explanation:

56/4=14

Check

14*4=56

4 0
2 years ago
Read 2 more answers
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