All categories

3 years ago

Which 2 or 3 are they pls help

Mathematics

2 answers:

True [87]3 years ago

7 0

The answer is B.

z x 1 = z

z x 0.37 = 0.37z

= z + 0.37z

Harlamova29_29 [7]3 years ago

7 0

The answer is B I think!

You might be interested in

A closed cylindrical vessel contains a fluid at a 5MPa pressure. The cylinder, which has an outside diameter of 2500mm and a wal

Julli [10]

Answer:

1) Increase in the diameter equals 3.5 mm

2) Increase in the length equals $0.0003724L_{i}$ where $L_{i}$ is the initial length of the vessel.

Step-by-step explanation:

The diametric strain in the vessel is given by

$\epsilon_{D} =\epsilon_{diam}-\nu \epsilon _{axial}$

We have

$\epsilon _{diam}=\frac{\sigma _{hoop}}{E}\\\\\sigma _{hoop}=\frac{\Delta P\times D}{2t}\\\\\therefore \epsilon _{diam}=\frac{\Delta P\times D}{2t\times E}$

Applying values we get

$\therefore \epsilon _{diam}=\frac{5\times 10^{6}\times 2.5}{2\times 20\times 10^{-3}\times 193\times 10^{9}}\\\\\therefore \epsilon _{diam}=\frac{5}{3088}$

Similarly axial strain is given by

$\epsilon _{diam}=\frac{\sigma _{axial}}{E}$

$\sigma _{axial}=\frac{\Delta P\times D}{4t}\\\\\therefore \epsilon _{axial}=\frac{\Delta P\times D}{4t\times E}$

Applying values we get

$\therefore \epsilon _{axial}=\frac{5\times 10^{6}\times 2.5}{4\times 20\times 10^{-3}\times 193\times 10^{9}}\\\\\therefore \epsilon _{diam}=\frac{2.5}{3088}$

Hence The effect of axial strain along the diameter is given by

$-\nu \epsilon _{axial}$

Applying values we get

$-\nu \epsilon _{axial}=-0.27\times \frac{2.5}{3088}=-0.0002185$

hence

$\epsilon _{D} =\frac{5}{3088}-0.0002185\\\\\epsilon =0.00140$

Now by definition of strain we have

$\epsilon _{D} =\frac{D_{f}-D_{i}}{D_{i}}\\\\\therefore D_{f}=D_{i}+\epsilon D_{i}\\\\D_{f}=2.5+0.0014\times 2.5\\\\\therefore D_{f}=2503.5mm$

Increase in the diameter is thus 3.5 mm

Using the same procedure for axial strain we have

$\epsilon_{axial} =\epsilon_{axial}-\nu \epsilon _{diam}$

Applying values we get

$\epsilon_{axial} =\frac{2.5}{3088}-0.27\times \frac{5}{3088}$

$\epsilon_{axial} =0.0003724$

Now by definition of strain we have

$\epsilon _{axial} =\frac{L_{f}-L_{i}}{L_{i}}\\\\\therefore \Delta L=0.0003724L_{i}$

where $L_{i}$ is the initial length of the cylinder.

6 0

4 years ago

Betty had an order of 70 sausages,but she only grilled 20%.Erika's an order of 30 sausages,but she only grilled 60%.who grilled

nadezda [96]

Answer:

Erica did

Step-by-step explanation:

60% of 30 is 18

20% of 70 is 14

8 0

3 years ago

Let f(x)=2x^2−8 .

madam [21]

To translate a function up or down you add a constant to the function...2 units downward means you must subtract 2 from the original equation...

g(x)=f(x)-2

g(x)=2x^2-8-2

g(x)=2x^2-10

5 0

3 years ago

An employee makes $9.50 and hour and works on monday from 9:00am to 4:30pm with a 30 minute unpaid lunch break. How much did the

kari74 [83]

Answer:66.5

Step-by-step explanation:

you have to add all the hours toghether(sry i spelled that wrong) and then you minus 30 min(bc of the break ) so its 7 hrs. Then u multiply by $9.50= 66.5

7 0

3 years ago

Triangle ABC has vertices at A(−3, 4), B(4, −2), C(8, 3). The triangle is translated 4 units down and 3 units left. Which rule r

Anarel [89]

4 units down => y - 4
3 units left => x - 3
=> C

5 0

3 years ago