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svetoff [14.1K]
3 years ago
6

1 in 4 families now owes money on a

Mathematics
1 answer:
Alecsey [184]3 years ago
4 0

"a rise of a quarter from  last year" means the percentage went up by 25%

x = old value

x + 25% of x = x + 0.25x = 1.25x = new value = 0.25 since "1 in 4" means 1/4 = 0.25

So,

1.25x = 0.25

x = 0.25/1.25

x = 0.2

x = 2/10

x = 1/5

Answer:  The fraction of families that owed money is 1/5, or 1 in 5.

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Robert is a salesperson. He receives 7% commission on each piece of electronic equipment he sells. How much commission will he r
Shalnov [3]

Answer:

He receives $476 in comission.

Step-by-step explanation:

This question can be solved using a rule of three.

$6,800 is 100% = 1. x, which is his commision, is 7% = 0.07. Then

6800 - 1

x - 0.07

x = 6800*0.07

x = 476

He receives $476 in comission.

7 0
3 years ago
What is the greatest number less than 400 such that 4 is the greatest common divisor of the number and 24?
Lubov Fominskaja [6]

Answer: Factors of 400 = 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200 and 400. Factors of 401 = 1 and 401. Hence, the common factor of 400 and 401 is 1.

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Help me<br><br>6 = 1/5 (4y + 10)​
gregori [183]

Step-by-step explanation:

open the bracket

6={(1/5×4y) + 1/5×10}

6=4/5y+2

6-2=4/5y

4=4/5y

divide both sides by 4/5

y=1/5

4 0
3 years ago
Read 2 more answers
Will get 20 points and be marked as brainlist if has answer all these questions
Anuta_ua [19.1K]

Answer:

1B , 2B , 3 Output = 2*input + 1

Step-by-step explanation:

1. given (3n + 5) * 2

first do the operation between brackets.

n=5 so (3*5) =15 which gives (15 + 5)=20

now finish with the operation after the brackets, which is multiply by 2. 20*2 = 40, which is answer B.

2. 3x means 3*x which means in words: 3 times the number, which is answer A.

3. From the tabe you can see that if you just multiply the input by 2, you are almost at the output. If you add 1 then it is perfect..So you get Output = 2*input + 1

5 0
3 years ago
The university police department keeps track of the number of tickets it write in a year. Last year the campus police wrote 1460
AlladinOne [14]

Answer:

2

Step-by-step explanation:

We are given that Ticket writing on campus follows a Poisson process.

Last year the campus police wrote 1460 tickets

So, X \sim Poisson (1460 / year)

1 year = 365 days

So, E(Y) =\frac{1460}{365}=4

So,  the standard deviation of the number of tickets written per day by the campus police = \sqrt{4} =2

Hence the standard deviation of the number of tickets written per day by the campus police is 2

5 0
3 years ago
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