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3 years ago

Please solve this, x=1/(2-√3) y=1/(2+√3) x^4+y^4=?

Mathematics

2 answers:

Yakvenalex [24]3 years ago

8 0

First of all we do this:
than:we expand only one of the expressions because they're the same:When we get an answer we just add the - for the ither expression and it's done .That's all!

Charra [1.4K]3 years ago

6 0

Answer:4y

Step-by-step explanation:

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Pachacha [2.7K]

300 - 30 3/10 = 269 7/10

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7 0

2 years ago

Please help me with this thank you

Varvara68 [4.7K]

Too much sand.

Volume is the amount of space something takes up. The formula for volume is v=length x width x height.

The volume of the sandbox is 36 ft^3, because 5x6x1.2 = 36. This means the box takes up 36 cubic feet of space.

If the customer bought 40 cubic feet of sand, than they bought to much because 40 > 36. The amount of sand she got is greater than the volume of the box, so it won’t all fit.

4 0

2 years ago

Read 2 more answers

A zoo train ride costs $3 per adult and $1 per child. On a certain day, the total number of adults (a) and children (c) who took

bearhunter [10]

$a+c=30$
$3a+c=50$
$c=30-a$
$3a+30-a=50$
$2a=20$
$a=10$
$a+c=30$
$10+c=30$
$c=20$

10 Adults and 20 Children

8 0

2 years ago

Every year Ethan earns 38,428. Each year he spends 21,728 on expenses. How much money should he have left over?

PolarNik [594]

Answer:

16,700

Step-by-step explanation:

Given that,

Earning of Ethan = 38,428

Ethan spends 21,728 on expenses.

We need to find the amount of money he has left over. It can be calculated as follows :

Left money = Earning - Spent

= 38,428 - 21,728

= 16,700

So, he has left over 16,700.

7 0

2 years ago

Part A: Sam rented a boat at $225 for 2 days. If he rents the same boat for 5 days, he has to pay a total rent of $480.

miss Akunina [59]

Answer:

Here's what I get.

Step-by-step explanation:

Part A. Equation in standard form

The question is asking you to find the equation of a straight line that passes through two points

Let x = the number of days

and y = the cost

Then the coordinates of the two points are (2,225) and (5,480).

(i) Calculate the slope of the line

$\begin{array}{rcl}m & = & \dfrac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\& = & \dfrac{480 - 225}{5 - 2}\\\\& = & \dfrac{255}{3}\\\\& = & 85\\\end{array}$

In other words, the daily rental is $85/day.

(ii) Calculate the y-intercept

$\begin{array}{rcl}y & = & mx + b\\480 & = & 85 \times 5 + b\\480 & = & 425 + b\\b & = & 55\\\end{array}$

(iii) Write the equation for the line

y = 85x + 55

That is, the cost is $55 plus $85/day

Part B. Equation in function notation

Replace y with ƒ(x)

ƒ(x) = 85x + 55

Part C. Graphing

Let's say you want to plot a graph of the rental cost for up to ten days.

(i) Calculate two points on the graph.

When x = 0, y = 85; when x = 10, y = 905.

(ii) Scale your axes

A good number of intervals is about ten.

Your x-axis should have tick marks at 1-day intervals.

Your largest y-value is 905. Ten intervals would make about $90/interval. However, you should round that up to $100/interval for easy interpolation.

Your y-axis will run from 0 to $1000 in $100 intervals.

Plot your two points and draw a straight line through them.

(iii) Axis labels

x represents the number of days, so the label on the x-axis could be "No. of days."

y represents the cost of renting the boat, so the label on the y-axis could be "Rental cost."

Your graph should resemble the one below.

4 0

3 years ago