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Verdich [7]
3 years ago
9

9

Mathematics
1 answer:
Mnenie [13.5K]3 years ago
6 0

Answer: n = 75; p = 30

Explanation: (a) 5p + 4n = 450 where p is for pen and n is for notebook.

(b) 10p + 3n = 525

We can use the elimination method to solve these two equations.

1. Multiply the first equation by 2 so that 10p will cancel out:

2(5p + 4n = 450)

- 10p + 3p = 525

10p + 8n = 900

- 10 p + 3n = 525

5n = 375

2. Divide by 5 to get n alone: n = 75

3. Plug 75 into the first equation: 5p + 4(75) = 450

5p + 300 = 450

4. Subtract 300 from 450: 5p = 150

5. Divide by 5 to get p alone: p = 30

We can test if this is correct by plugging our answers into the second equation:

10(30) + 3(75) = 525

300 + 225 = 525

525 = 525

This is a true statement, which means that our answers are correct.

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Answer:

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Step-by-step explanation:

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Help ASAP for this question All of the following are equivalent except<br> 0.6 0.06 6% 3/50
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Answer:

0.6

Step-by-step explanation:

0.6 0.06 6% 3/50 are equivalent to

0.6 0.06 6% 6/100.  0.6 is 10 times larger than the other three.

Thus, 0.06 6% 3/50 are equivalent, and 0.6 does not belong to the group.

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when 1760 is divided into 14 equal parts the remainder is 10. what is a correct way to write the quotient ​
Ivanshal [37]

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125 10/14

Step-by-step explanation:

1,760/14 = 125 r10

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3 years ago
Plese help i need the answer
Sladkaya [172]

Using linear function concepts, it is found that:

a) The initial value is of 3 and the rate of change is of 20.

b) The rate of change means that for <u>each hour, the cost increases by 3 Dhs</u>, while the initial value means that <u>a flat fee of 20 Dhs is paid</u>.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and also can be considered as the initial value.

In this problem, the function that gives the charge C for renting a bicycle for h hours is:

C(h) = 3h + 20

Item a:

Comparing to the standard function, we have that:

  • The initial value is of 3 and the rate of change is of 20.

Item b:

The rate of change means that for <u>each hour, the cost increases by 3 Dhs</u>, while the initial value means that <u>a flat fee of 20 Dhs is paid</u>.

You can learn more about linear function concepts at brainly.com/question/24808124

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Principle 400 at rate of 5% is
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Answer:

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Step-by-step explanation:

do 5% of 400 which gives you 20 for your answer

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