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Zigmanuir [339]
3 years ago
10

If x+y=12 and xy=27 . find x^3+y^3pls help with steps ​

Mathematics
2 answers:
Ivan3 years ago
8 0

Answer:

Step-by-step explanation:

use formula

x^3+y^3=(x+y)^3-3*x*y(x+y)

=12^3-3*27(12)

=1728-972

=756

luda_lava [24]3 years ago
6 0

Answer:

x^3 + y^3 = 756

Step-by-step explanation:

Given that,  x+y=12 and xy=27

We know that,

( x + y )^3 = x^3 + y^3 + 3xy(x + y)

∴ 12^3 = x^3 + y^3  + 3 * 27 * 12

=> 1728  = x^3 + y^3 + 972

x^3 + y^3 = 1728 - 972

==>  x^3 + y^3 = 756

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4) How many km in<br> 58,795cm?<br><br><br> Please help thanks!!
Leto [7]

Step-by-step explanation:

1 km is equal to 100,000 cm.

58,795 is close to 50,000, which is half of 100,000. So our estimate would be 1/2 km to 50,000 cm.

Convert 58,795 to a decimal.

0.58795

The decimal cannot be simplified so there is

0.58795 km in 58,795 cm

Hope it helps!

5 0
3 years ago
You move down 1 units and up 2 units. You end at (-3,1). Where did you start? On a number graph 1 through 5 axis graph
Roman55 [17]

Let's do it step by step:

First we need to understand that moving upwards would be addition to y-coordinates, while moving downwards would be deduction to the y-coordinates.

Moving to rightwards would be addition to x-coordinates and leftwards would be deduction to x-coordinates.

As we moved down by 1 unit and up for 2 units, it means that we are originally upward for one unit and downward by 2 units, which makes downwards for 1 units and would be -1 to the y-coordinates:

(-3,1 -1)

=(-3,0)

Therefore the start would be (-3,0).

Hope it  helps!


6 0
3 years ago
What is f(-8) for the function f?<br> F= 11(x-24)/2
mojhsa [17]

Answer:

-176.........................

8 0
3 years ago
What is the range of 38 17 55 40
shtirl [24]

Answer:

38

Step-by-step explanation:

take the biggest number and subtract it by the smallest number and you will get your answer.

7 0
3 years ago
Read 2 more answers
Which of the following is the interest on $6000 at 6% compounded semiannually for eight years?
ryzh [129]

Answer:

$3628.24

Step-by-step explanation:

we use the formula for accrued value (A) with compounded interest:

A=P(1+\frac{r}{n})^{n*t}

where A= accrued value (principal plus the accumulated  interest)

P = principal -> in our case $6000

r = annual interest rate (in decimal form) -> in our case 0.06

n = number of compoundings per year. In our case 2 (semiannually)

t = time in years -> in our case 8

A=P(1+\frac{r}{n})^{n*t}\\A = 6000(1+\frac{0.06}{2})^{16}\\ A= 6000(1+0.03)^{16}\\A = $9628.24

Since this is the value of principal plus accumulated interest, we subtract from it the principal ($6000) to get the value of just the interest:

$9628.24 - $6000 = $3628.24

4 0
3 years ago
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