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kondaur [170]
3 years ago
7

Survi purchased 2 balls for 20.34, 8 pencils for Rs. 24.08, and a copy for Rs.5.08. She gave an Rs.50 note to the shopkeeper and

asked him to keep the change. What amount did the shopkeeper keep? *
Mathematics
1 answer:
bagirrra123 [75]3 years ago
7 0

Add the total of the 3 things bought and subtract from what they gave the cashier:

20.34 + 24.08 + 5.08 = 49.50 total

50 - 49.50 = 0.50

The shopkeeper kept 0.50

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American households increasingly rely on cell phones as their exclusive telephone service. It is reported that 53.0% of American
FrozenT [24]

Solution :

a). According to the reports, 53.0% of the American households still have a landline phone service. Out of which 8 households are randomly called.

Here, the landline phone service is p = 53.0%

                                                           n = 8

Therefore, q = 1 - p

                     = 1 - 0.53

                     = 0.47

here we use the binomial distance because the probability of having the landline phone service is constant and the number of the trial are finite.

b). Let x be the number of household in the sample group having landline phone service.

  Probability that none of the household in the sample group have a landline service is

= P( x = 0)

$=^8C_0 (0.53)^0(0.47)^8$

= 0.002 (using the binomial calculation )

c). Probability that exactly 5 of the household in the sample have a landline service is given by :

 P(x = 5)

$=^8C_5 (0.53)^5(0.47)^3$

= 0.24

8 0
3 years ago
An image of a rectangular prism is shown below:
Butoxors [25]

Part A:square cross-section

<span>Part B:  a Rectangle cross -section</span>

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5 0
3 years ago
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The radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. A cone is used to fill the cylinder wi
klasskru [66]

The number of times one needs to use the completely filled cone to completely fill the cylinder with water is <u>24</u>.

In the question, we are given that the radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. A cone is used to fill the cylinder with water. The radius of the cone's base is 5 centimeters, and its height is 10 centimeters.

We are asked to find the number of times one needs to use the completely filled cone to completely fill the cylinder with water.

The volume of a cylinder is calculated using the formula, V = πr²h.

The volume of a cone is calculated using the formula, V = (1/3)πr²h.

In both the formulas r is the radius and h is the height.

The volume of the given cylinder using the formula is π(10)²(20) cm³ = 2000π cm³.

The volume of the given cone using the formula is (1/3)π(5)²(10) cm³ = (250/3)π cm².

The number of times one needs to use the completely filled cone to completely fill the cylinder with water =

The volume of the given cylinder/The volume of the given cone,

or, The number of times one needs to use the completely filled cone to completely fill the cylinder with water = {2000π cm³}/{(250/3)π cm²},

or, The number of times one needs to use the completely filled cone to completely fill the cylinder with water = 24.

Thus, the number of times one needs to use the completely filled cone to completely fill the cylinder with water is <u>24</u>.

Learn more about the volume of a cylinder and cone at

brainly.com/question/26263468

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8 0
2 years ago
Using the intercept method, what are the two points to plot when graphing the line x + 3y = 6?
IgorC [24]

Answer:

The Slope-Intercept Form is essentially a special case of the Point-Slope Form. It's said that two points determine a line. That truism is used to quickly sketch a line if its equation is given in the Two Intercept-Form ax + by = c. We get the y-intercept by setting x = 0 and solving for y: by = c, y = c b .

Step-by-step explanation:

plzzz make brainlist and follow

3 0
3 years ago
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50 points Item 15 Simplify the expression. (15k)2 The simplified expression is
riadik2000 [5.3K]

30k just multiply the 2 by 15 and get 30k

8 0
3 years ago
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