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lora16 [44]
3 years ago
7

mr. walker works as a salesperson at an electronics store. her earns $600 a week, plus $50 for a every computer he sells. write

and solve and inequality to determine the number of computers mr. walker must sell in order to earn at least $1,250 for the week.
Mathematics
1 answer:
harkovskaia [24]3 years ago
3 0

Answer:

The number of computer must Mr. walker sale that week to earn at least $ 1250 is 13 .

Step-by-step explanation:

Given as :

The earning of Mr . walker = $ 600 per week + $ 50 for every computer he sell

Let The number of computer does he must sell to earn $ 1250 for the week = n computers

Now, According to question

$ 600 per week + $ 50 × number of computer he sale = total earning that week

Or, $ 600 per week + $ 50 × number of computer he sale = $ 1250

Or, $ 600 per week + $ 50 × n = $ 1250

or, $ 50 × n = $ 1250 - $ 600

Or, $ 50 × n = $ 650

∴ n = \frac{650}{50}

I.e n = 13

So, number of computer must he sale to earn $ 1250 = n = 13

Hence The number of computer must Mr. walker sale that week to earn at least $ 1250 is 13 . Answer

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ludmilkaskok [199]
10 x 25 = 250, well 20 x 25 is just double that, its 10 doubled x 25 so he probably just added it up. repeated addition really helps with times tables. 
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The answer is j

Step-by-step explanation:

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2 years ago
The sum of the squares of two consecutive positive integers is 41. Find the two
Komok [63]

We have to present the number 41 as the sum of two squares of consecutive positive integers.

1² = 1

2² = 4

3² = 9

4² = 16

5² = 25

16 + 25 = 41

<h3>Answer: 4 and 5</h3>

Other method:

n, n + 1 - two consecutive positive integers

The equation:

n² + (n + 1)² = 41     <em>use (a + b)² = a² + 2ab + b²</em>

n² + n² + 2(n)(1) + 1² = 41

2n² + 2n + 1 = 41     <em>subtract 41 from both sides</em>

2n² + 2n - 40 = 0     <em>divide both sides by 2</em>

n² + n - 20 = 0

n² + 5n - 4n - 20= 0

n(n + 5) - 4(n + 5) = 0

(n + 5)(n - 4) = 0 ↔ n + 5 = 0 ∨ n - 4 =0

n = -5 < 0 ∨ n = 4 >0

n = 4

n + 1 = 4 + 1 = 5

<h3>Answer: 4 and 5.</h3>
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Answer:

Step-by-step explanation:

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Question 3(Multiple Choice Worth 2 points)
zysi [14]

The solution to the equation are 5 or -1 after applying the quadratic formula.

<h3>What is a quadratic equation?</h3>

Any equation of the form \rm ax^2+bx+c=0  where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

It is given that:

x² - 4x² - 5 = 0

The above equation is a quadratic equation:

Using the quadratic formula:

\rm  $x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

Plug the values in the formula:

\rm  $x=\dfrac{-(-4)\pm\sqrt{(-4)^2-4(1)(-5)}}{2(1)}$

After solving:

x = 5 or -1

Thus, the solution to the equation is 5 or -1 after applying the quadratic formula.

Learn more about quadratic equations here:

brainly.com/question/17177510

#SPJ1

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