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2 years ago

Please help with questions 1 2 3 and 4 thank you

Mathematics

2 answers:

Tatiana [17]2 years ago

7 0

I agree I do believe as well number 4 is the answer.

VikaD [51]2 years ago

6 0

I believe that number one is 4<span />

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Among all pairs of numbers with a sum of 238238, find the pair whose product is maximum. Write your answers as fractions reduced

mylen [45]

Answer:

$x=119119,\;\;\;y=119119$

Step-by-step explanation:

Let the $x$ be the first number, $y$ be the second number and $p$ be the product of the first and second number.

i.e $x+y=238238$ $\Rightarrow x=238238-y$

$p=xy$

$\Rightarrow p=(238238-y)y\\\Rightarrow p=238238y-y^2$

$\Rightarrow \frac{dp}{dy} =238238-2y\\\Rightarrow 0=238238-2y\\\Rightarrow 2y=238238\\\Rightarrow y=119119$

Now,

$x=238238-119119\\\\ \Rightarrow x=119119$

Hence, $x=119119,\;\;\;y=119119$

8 0

2 years ago

Suppose your friends parents invest $15,000 in an account paying 6% compounded annually. What will be the balance after 9 years

JulijaS [17]

A = 15000(1.04)6 .........You can put this into your calculator such that it becomes
A = $18,979.79

6 0

2 years ago

How do you simplify the following

Fed [463]

It is 2i I standing for imaginary since it is a negative

square root of -1×4

4 square rooted is 2

and a negative number square rooted is i

8 0

2 years ago

100 pounds of chocolate is packaged into boxes each containing 1^1/4 pounds of chocolate. Each box is then sold for $1.75. What

sertanlavr [38]

Answer:

$140

Step-by-step explanation:

Total Amount of chocolate = 100 Pounds

Amount of chocolate in one box = 1 1/4 Pounds = 5/4 Pounds

Number of boxes = 100/(5/4) = 80 boxes

Cost of one box = $1.75

Total selling price = 80×1.75 = 140

The total selling price for all the boxes of chocolate is $140

8 0

1 year ago

Read 2 more answers

Mr. Akika has 49 21 cent and 31 cent stamps all told. The stamps are worth $13.39. how many of each kind of stamps does he have?

Lana71 [14]

Mr Akika has 18 21-cent stamp and 31 31-cent stamp.

He has 49 21-cent and 31-cent stamps all told.

let

x = number of 21 cent stamp

y = number of 31 cent stamp

Therefore,

<h3>Total number of stamp:</h3>

x + y = 49

<h3>Total cost of stamp:</h3>

21x + 31y = 1339

Therefore,

x + y = 49

21x + 31y = 1339

21x + 21y = 1029

10y = 310

y = 310 / 10

y = 31

Therefore,

x = 49 - 31

x = 18

Therefore, Mr Akika has 18 21-cent stamp and 31 31-cent stamp.

learn more on system of equation: brainly.com/question/1369852?referrer=searchResults

4 0

1 year ago