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3 years ago

Please help i will give brainliest!

Mathematics

2 answers:

Blizzard [7]3 years ago

5 0

Answer:

Step-by-step explanation:

The reason I say this one is because that equation say p is greater than 48 that is why,

andreev551 [17]3 years ago

5 0

Answer: Option number 3!

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An opaque cylindrical tank with an open top has a diameter of 3.25 m and is completely filled with water. When the afternoon Sun

kicyunya [14]

Answer:

10.69

Step-by-step explanation:

We must first know that the angle of refraction is given by the following equation:

n_water * sin (A_water) = n_air * sin (A_air)

where n is the refractive index, for water it is 1.33 and for air it is 1.

The angle (A) in the air is 22.8 °, and that of the water is unknown.

Replacing these values we have to:

1.33 * sin (A_water) = 1 * 0.387

sin (A_water) = 1 * 0.387 / 1.33

A_water = arc sin (0.2907) = 16.9 °

now for the tank depth:

h = D / tan (A_water)

D = 3.25

Replacing

h = 3.25 / tan 16.9 °

h = 10.69

Therefore the depth is 10.69 meters.

6 0

3 years ago

How do you solve 18x18

Amiraneli [1.4K]

Do 18x18 which equals 324

6 0

4 years ago

Read 2 more answers

Ariel is working at a meat-packing plant 5 nights a week. Her regular wage is $11 an hour. She earns time and a half for any ove

svetlana [45]

Answer:

$11 would be earned

Step-by-step explanation:

6 0

4 years ago

Read 2 more answers

Identify the number of solutions to the following system:

zalisa [80]

Answer:

Step-by-step explanation:

Since these lines have the same slope and different y-intercepts, they are parallel lines. As such lines do not intersect, we can say that :

The system has no solutions.

7 0

2 years ago

The 1996 gss asked, "if the husband in a family wants children, but the wife decides that she does not want any children, is it

zzz [600]

The confidence interval would be
$0.80\pm0.03$ .

We use the formula
$p\pm z*\sigma_p$ , where

$\sigma_p=\sqrt{\frac{p(1-p)}{N}}$ , with p being the sample proportion and N being the sample size.

First we find the z-score associated with this level of confidence:
Convert 95% to a decimal: 95/100 = 0.95
Subtract from 1: 1-0.95 = 0.05
Divide by 2: 0.05/2 = 0.025
Subtract from 1: 1-0.025 = 0.975

Using a z-table (http://www.z-table.com) we see that this value is associated with a z-score of 1.96.

Since 578/720 said yes, this gives us p=0.80:
$\sigma_p=\sqrt{\frac{0.80(1-0.80)}{720}}=\sqrt{\frac{0.8(0.2)}{720}=0.015$

This gives us
$0.80\pm1.96(0.015)=0.80\pm 0.03$

5 0

4 years ago