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irina1246 [14]
3 years ago
15

The reciprocal of 5 plus the reciprocal of 7 is the reciprocal of what number?

Mathematics
2 answers:
Natalija [7]3 years ago
4 0
2/5 is the answer so the reciprocal would be 5/2
Lynna [10]3 years ago
3 0

5/2, because 1/5 plus 1/7 equals to 14/35, simplified is 2/5, and the reciprocal of 2/5 is 5/2 (2 1/2)

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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Use the circle graph sh
mel-nik [20]

Answer: 500 people

Step-by-step explanation:

Let there are x people in the survey.

According to the question,

People who like football as their favorite sports = 42 % of x = 0.42 x

People who like baseball as their favorite sports = 33 % of x = 0.33 x

People who like soccer as their favorite sports = 25 % of x = 0.25 x

But, 210 people said football was their favorite sport.

⇒ 0.42 x = 210

⇒ 42 x = 21000

⇒ x = 500

Therefore, there are 500 people in the survey.


4 0
3 years ago
Read 2 more answers
Suppose that a household's monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hu
dolphi86 [110]

Answer:

The monthly cost for 9 HCF is $38.54

Step-by-step explanation:

<em>The graph is missing; however, the question can still be solved</em>

Given

Slope = 1.55

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Required

Determine the monthly cost for 9 HCF

From the question, we understand that it is a linear function;

Linear functions are of the form

y = mx + b

Where y is the function of x and m is the slope

In this case; the function is the monthly water bill

and x is the amount of water

Solving for b

When monthly cost = $47.84, Amount of water = 15 HCF

The function is as follows;

47.84 = 1.55 * 15 + b

47.84 = 23.25 + b

Subtract 23.25 from both sides

47.84 - 23.25= 23.25 - 23.25 + b

24.59 = b

b = 24.59

Solving for the monthly cost for 9 HCF

Here, we have that

x = Amount\ of\ water = 9

m = Slope = 1.55

b = 24.59

Substitute these values in the linear function; y = mx + b

y = 1.55 * 9 + 24.59

y = 13.95 + 24.59

y = 38.54

<em>Hence, the monthly cost for 9 HCF is $38.54</em>

5 0
3 years ago
A store originally purchased a refrigerator at a cost of $650.20 and marked it up 50%. After a few weeks, however, the store dis
Murrr4er [49]

Answer:

Step-by-step explanation:

Step one:

the original price of refrigerator =  $650.20

the markup/raise is 50%

the new price after the raise is

= 50/100*650.20

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=325.1

The raise is by $325.1

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Step two:

there was a discount of 70%

so =(70/100)*975.3

=0.7*975.3

=682.71

The discounted price is $682.71

The new price is 975.3-682.71

=$292.59

7 0
3 years ago
Can you help me?
Delicious77 [7]

Answer:

<em>I don't understand</em>

Step-by-step explanation:

<em>please sorry okay</em>

7 0
3 years ago
What is the domain of g? ​
aleksandr82 [10.1K]

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Step-by-step explanation:

The domain is the set of all inputs that makes the function definable. The domain is always represented on the  x axis.So looking at g on its x axis you see 4. So the domain is 4.

7 0
3 years ago
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