3 years ago

Find the value of 423 using the identity (x + y)3 = x3 + 3x2y + 3xy2 + y3

Mathematics

1 answer:

finlep [7]3 years ago

8 0

Hint: 423 = (40 + 2)3; therefore, x = 40 and y = 2.

You might be interested in

I really need help on this please

hammer [34]

The answer is letter A

7 0

3 years ago

A hemisphere has a diameter of 26 centimeters. What is the volume of a sphere with the same radius?

salantis [7]

$r= \frac{d}{2}= \frac{26}{2} \;\Rightarrow r=13\,cm \\ \\ 
V= \frac{4}{3} \pi r^3 \\ \\ 
V= \frac{4}{3} \pi \,(13)^3 \\ \\ 
V= \dfrac{4\cdot 2197}{3} \pi \\ \\ 
V= \frac{8788}{3} \pi\approx 9202,77\,cm^3$

4 0

3 years ago

I’m failing and I don’t understand what to do.

Elan Coil [88]

Start at point B till you get it right

5 0

3 years ago

Hey guys can someone help me plz

tekilochka [14]

Answer:

i am pretty sure its 1

Step-by-step explanation:

when you look at x and y and where the line intersects the y axis if it where x and y it would be (1,1/2)

7 0

2 years ago

Read 2 more answers

NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!

Tatiana [17]

For this case, we have that by definition, an irrational number is a number that can not be expressed as a fraction $\frac {a} {b}$ , where a and b are integers and b is different from zero.

So, we have the irrational numbers are:

$\sqrt {80} = 8.94427190999915\\\pi = 3.1415926535897932384\\\sqrt {12} = 3.46410161513775$

Answer:

Option B, D and E

5 0

3 years ago