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3 years ago

In a fish tank 2/5 of the fish are sturgeon of these 3/4 are yellow tail. What is the total number of yellow tail in the tank

Mathematics

1 answer:

Oduvanchick [21]3 years ago

4 0

Answer:

0.3

Step-by-step explanation:

Use a calculator

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The director of the library calculates that 29% of the library's collection is checked out. If the director is right, what is th

marusya05 [52]

Answer:

The probability that the proportion of books checked out in a sample of 412 books would differ from the population proportion by less than 4% is P=0.9255.

Step-by-step explanation:

The population's proportion is $\pi=0.29$

If we take a sample of 412 books (n=412), we have a standard deviation of the sampling distribution of:

$\sigma_M=\sqrt{\frac{\pi(1-\pi)}{n}}=\sqrt{\frac{0.29*0.71}{412}}=\sqrt{0.0005} =0.0224$

We have to calculate the probabilty that the sample proportion will be between 0.25 and 0.33.

$z_1=(0.25-0.29)/0.0224=-0.04/0.0224=-1.7857\\\\z_2=1.7857\\\\\\P(0.25$

8 0

3 years ago

Please help I really need help because I have to turn it in soon and yeah so comment

BartSMP [9]

Answer:

Step-by-step explanation:

4- 3*1=3

6*1/100= 0.06

3+0.06= 3.06

5- 7*1= 7

3*1/10= 0.3

4*1/1,000= 0.004

7+0.3+0.004= 7.304

7- 3.3, 3.30

8- 9.3000, 9.30

9- 9.6, 9.600

10- 4.4000, 4.40

for #4-5 just put the number of 0s in the denominator of the fraction for the answer

3 0

3 years ago

1/2x + x + 1/5y + y = 32

NeTakaya

(1/2)x + x + (1/5)y + y = 32

(3/2)x + (6/5)y = 32

4 0

3 years ago

I need help on number 14

Deffense [45]

The image is not really clear

4 0

3 years ago

Help please gotta finish bbb

igomit [66]

Answer:

the third one (10.75)^2

5 0

3 years ago

Read 2 more answers