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Luba_88 [7]
3 years ago
14

in a survey 60% of those questioned chose winter as their favorite season if 48 people chose winter than how many people were su

rveyed
Mathematics
1 answer:
Dafna11 [192]3 years ago
3 0

Answer:

  80

Step-by-step explanation:

There are several ways you can solve this.

<em>Write a proportion</em>

  60/100 = 48/x . . . . . . where x represents the number surveyed

  60x = 4800 . . . . . . . . "cross multiply" or multiply by 100x

  4800/60 = x = 80 . . . . divide by the coefficient of x

___

<em>Write a math version of the problem statement</em>

  60% of those questioned is 48

  0.60 · x = 48

  48/0.60 = x = 80 . . . . . divide by the coefficient of x

___

<em>Think about the numbers</em>

  60%  = 6·10%

  48 = 6·8

so, 10% of those questioned = 8 people. Multiplying by 10 gives

  100% of those questioned = 80 people

(Of course, you know that 100% is <em>all of them</em>.)

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A scale drawing of a living room is shown below.
prisoha [69]

Answer:

A=80 square feet.

Step-by-step explanation:

First, we find the area of the model. 6*4=24. Now, due to the ratio of 1:40, we know that every inch is actually forty inches. So, you do this:

24*40=960.

So, the area of the actual living room is 960 inches. Or 80 feet.

3 0
4 years ago
R is inversely proportional to A.
SVETLANKA909090 [29]

i  think it is b because i did the question

3 0
3 years ago
21x^3 + 6x^2 - 28x - 8 factor this expression with work please?
marusya05 [52]
21x^3 + 6x^2 - 28x - 8 \\ \\ 3x^2 (7x + 2) - 4(7x + 2) \\ \\ (7x + 2)(3x^2 - 4) \\ \\

The final result is: (7x + 2)(3x<span>² - 4).</span>
3 0
3 years ago
Read 2 more answers
1.055.
Stella [2.4K]

Given:

The statement is:

{5, 6, 7} = {5, 5, 6, 7, 7}

To find:

Whether the given statement is true or false.

Solution:

Two sets are equal if they have exactly the same elements.

The given set {5, 6, 7} has three elements and the set {5, 5, 6, 7, 7} has five elements but we known that all the elements of a set are distinct. It means, it has no repeated element.

Set {5, 5, 6, 7, 7} has three distinct elements 5, 6, 7. So,

{5, 5, 6, 7, 7} = {5, 6, 7}

Therefore, the given statement is true.

5 0
3 years ago
(365 days per yr Jonas practices guitar 1 hour a day for 2 years. Bradley practices the guitar 2 hours a day more than Jonas. Ho
siniylev [52]

Answer:

87,600 minutes

Step-by-step explanation:

Given that practice time by Jonas :

1 hour per day for 2 years :

Bradley practices : 2 hours a day more than Jonas,

How many more minutes does Bradley practice the guitar than Jonas over the course of 2 years

Number of days in a year = 365 days

2 hours per day for (2 * 365) days :

2 * (2 * 365) = 1460 hours

Recall :

60 minutes = 1 hour

(60 * 1460) = 87,600 minutes

7 0
3 years ago
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