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BaLLatris [955]
3 years ago
6

In a bowl, there are gum balls. There are 5 red, 7 blue, 3 yellow and 11 purple.

Mathematics
1 answer:
ipn [44]3 years ago
6 0

Answer:

10 is A

11 is D

12 is C

and 13 is B

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Frogs – A species of frog’s population grows 24% every year. Suppose 100 frogs are released into a pond. (For some answers, you
ivolga24 [154]

Answer:

293; 869; 11 years

Step-by-step explanation:

N: no. of frogs

t: no. of years

N = 100(1.24^t)

N = 100(1.24⁵)

= 293

N = 100(1.24¹⁰)

= 859

1000 = 100(1.24^t)

10 = 1.24^t

lg10 = t×lg1.24

t = 1/lg1.24

t = 10.7 = 11 years

7 0
3 years ago
Read 2 more answers
Suppose that 80% of all trucks undergoing a brake inspection at a certain inspection facility pass the inspection. Consider grou
Gwar [14]

Answer:

P=0.147

Step-by-step explanation:

As we know 80% of the trucks have good brakes. That means that probability the 1 randomly selected truck has good brakes is P(good brakes)=0.8 . So the probability that 1 randomly selected truck has bad brakes Q(bad brakes)=1-0.8-0.2

We have to find the probability, that at least 9 trucks from 16 have good brakes, however fewer than 12 trucks from 16 have good brakes. That actually means the the number of trucks with good brakes has to be 9, 10 or 11 trucks from 16.

We have to find the probability of each event (9, 10 or 11 trucks from 16 will pass the inspection) .  To find the required probability 3 mentioned probabilitie have to be summarized.

So P(9/16 )=  C16 9 * P(good brakes)^9*Q(bad brakes)^7

P(9/16 )= 16!/9!/7!*0.8^9*0.2^7= 11*13*5*16*0.8^9*0.2^7=approx 0.02

P(10/16)=16!/10!/6!*0.8^10*0.2^6=11*13*7*0.8^10*0.2^6=approx 0.007

P(11/16)=16!/11!/5!*0.8^11*0.2^5=13*21*16*0.8^11*0.2^5=approx 0.12

P(9≤x<12)=P(9/16)+P(10/16)+P(11/16)=0.02+0.007+0.12=0.147

7 0
2 years ago
Work out the value of x​
mario62 [17]

Answer:

The letter "x" is often used in algebra to mean a value that is not yet known.

It is called a "variable" or sometimes an "unknown".

But in some cases, x can be equal to 1 like example when working with exponents.

Step-by-step explanation:

8 0
3 years ago
An investment of $5000 has an annual growth rate of 8% for 3 years
Fudgin [204]

Answer: The final balance is $6,341.21.

The total compound interest is $1,341.21.

Step-by-step explanation:

8 0
2 years ago
I need someone to explain what I did wrong
egoroff_w [7]

Answer:

g(f(4)) = 9

Step-by-step explanation:

Fill in gf(x) for where x is in g(x): (x-7)²

Then, fill in 4 for where x is: (4-7)²

Square it: (-3)²

9

4 0
2 years ago
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