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3 years ago

The volume of a cube is 8ft3. What is the length of each edge of the cube

2 answers:

8 0

Answer:Volume of a cube is length x width x height. For a cube, all three are the same lenght, therefore (x)(x)(x) = 8 x3 = 8 x = 2

Step-by-step explanation:

IceJOKER [234]3 years ago

6 0

Answer:

Step-by-step explanation: 1st. Multiply 8x3=24

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In this problem, x = c1 cos t + c2 sin t is a two-parameter family of solutions of the second-order DE x'' + x = 0. Find a solut

Norma-Jean [14]

Differentiate the given solution:

$x=C_1\cos(t)+C_2\sin(t) \implies x'=-C_1\sin(t)+C_2\cos(t)$

Now, given that x (π/4) = √2/2 … (I'm assuming there are symbols missing somewhere) … you have

$\dfrac{\sqrt2}2=C_1\cos\left(\dfrac\pi4\right)+C_2\sin\left(\dfrac\pi4\right)$

$\implies\dfrac1{\sqrt2} = \dfrac{C_1}{\sqrt2}+\dfrac{C_2}{\sqrt2}$

$\implies C_1+C_2=1$

Similarly, given that x' (p/4) = 0, you have

$0=-C_1\sin\left(\dfrac\pi4\right)+C_2\cos\left(\dfrac\pi4\right)$

$\implies 0=-\dfrac{C_1}{\sqrt2}+\dfrac{C_2}{\sqrt2}$

$\implies C_1=C_2$

From this result, it follows that

$C_1+C_2=2C_1=1 \implies C_1=C_2=\dfrac12$

So the particular solution to the DE that satisfies the given conditions is

$\boxed{x=\dfrac12\cos(t)+\dfrac12\sin(t)}$

7 0

3 years ago

Give anther name for Plane WPX

SCORPION-xisa [38]

Answer:

Plane RXP

Explanation:

I’m pretty sure it’s right hope it helps

4 0

3 years ago

William bought a new pair of shorts at the store when they were having a 50% off sale.

makvit [3.9K]

50% of 30 is 15, so the answer is $15.

8 0

3 years ago

Need help btw i am in middle school

lorasvet [3.4K]

Answer:2

Step-by-step explanation:HEY PLS DON'T JOIN THE ZOOM CALL OF A PERSON WHO'S ID IS 825 338 1513 (I'M NOT SAYING THE PASSWORD) HE IS A CHILD PREDATOR AND A PERV. HE HAS LOTS OF ACCOUNTS ON BRAINLY BUT HIS ZOOM NAME IS MYSTERIOUS MEN. HE ASKS FOR GIRLS TO SHOW THEIR BODIES AND -------- PLEASE REPORT HIM IF YOU SEE A QUESTION LIKE THAT. WE NEED TO TAKE HIM DOWN!!! PLS COPY AND PASTE THIS TO OTHER COMMENT SECTIONS!! YOU CAN ALSO PUT IT AS A QUESTION< THIS IS NOT A JOKE THIS IS SOMETHING VERY SEROUIS AND DANGEROUS AND SHOULD BE TAKEN VERY SEROUISLY

6 0

3 years ago

Read 2 more answers

Tut

zheka24 [161]

15 x 3= 45 so 3 hours is the answer

3 0

3 years ago

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