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3 years ago

Help please !! explain if can too? :)

Mathematics

1 answer:

pychu [463]3 years ago

8 0

Answer:

29 because lines ac and bd are perpendcular and equal.

Step-by-step explanation:

im not fully sure my explanation is good enough

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Trent spent 50 minutes at the neighbors house. He spent 2/5 of the time swimming. How many minutes did Trent spend swimming

denis23 [38]

2/5(2/2)= 4/10= 0.4

50(0.4)= 20

Trent spent 20 minutes swimming at the neighbors’ house.

3 0

4 years ago

What value of x makes the equation -5 - (-7-4x) = -2 (3x-4) true?

MrMuchimi

-5 - (-7 - 4x) = -2(3x - 4) |use distributive property

-5 -(-7) - (-4x) = (-2)(3x) + (-2)(-4)

-5 + 7 + 4x = -6x + 8

2 + 4x = -6x + 8 |-2

4x = -6x + 6 |+6x

10x = 6 |:10

x = 0.6

5 0

3 years ago

In the expression 2m-5, which is the operation?

yuradex [85]

Answer:

The - sign

Step-by-step explanation:

In expressions, operation are the signs

8 0

2 years ago

A spherical pressure vessel is required to contain 1.5 m3 of compressed natural gas at 22 MPa . If the tank is made of A516 grad

kifflom [539]

Answer:

The required thickness of the tank wall is 87.7668 mm.

Step-by-step explanation:

Given :

Volume of vessel is V=1.5 m³.

A spherical pressure vessel is of compressed natural gas at P=22 MPa.

If the tank is made of A516 grade 60 steel with a maximum normal stress 150 MPa.

i.e. $\sigma_{max}=150\ Mpa$

To find : What is the required thickness of the tank wall?

Solution :

The diameter of the vessel is given by,

$\frac{d}{2}=\sqrt{\frac{3V}{4\pi} }$

$\frac{d}{2}=\sqrt{\frac{3\times 1.5}{4\times 3.14}}$

$\frac{d}{2}=\sqrt{\frac{4.5}{12.56}}$

$\frac{d}{2}=\sqrt{0.358}$

$\frac{d}{2}=0.598$

$d=1.196\ m$

Convert into mm,

$d=1.196\times 1000=1196.82\ mm$

The thickness of the wall tank is given by,

$t=\frac{Pd}{2\sigma}$

$t=\frac{22\times 1196.82}{2\times 150}$

$t=\frac{26330.04}{300}$

$t=87.7668$

Therefore, the required thickness of the tank wall is 87.7668 mm.

4 0

4 years ago

A number x is greater than 7 graph line

Anettt [7]

I graphed this line below.

Start with an open dot on 7.

The reason we use an open dot is because x

does not equal 7, it is only greater than 7.

So from your open dot, draw an arrow to the right

to represent all numbers greater than 7.

Finally, state your answer in set notation if possible.

It is read as {x: x > 7}.

5 0

3 years ago