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3 years ago

Please OMG I DONT UNDERSTAND

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

4 0

Answer:

ANSWER

Step-by-step explanation:

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"isotherms are drawn at regular intervals; on this map, the interval between successive isotherms is ______ fahrenheit degrees."

Marizza181 [45]

An isotherm on a geographic map is a type of equal temperature at a given date or time. And if we talk about thermodynamics, it is a curve on a Pressure – Volume diagram at a constant temperature.

Basing from the graph, we can actually see that the interval is:

10 <span>Fahrenheit degrees</span>

6 0

3 years ago

Find the distance between the two points. (2, 4), (7, 2)

anyanavicka [17]

Answer:

5.38516480 or √ 29

hope this helps

have a good day :)

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Find the general solution of x'1 = 3x1 - x2 + et, x'2 = x1.

Ann [662]

Note that if ${x_2}'=x_1$ , then ${x_2}''={x_1}'$ , and so we can collapse the system of ODEs into a linear ODE:

${x_2}''=3{x_2}'-x_2+e^t$
${x_2}''-3{x_2}'+x_2=e^t$

which is a pretty standard linear ODE with constant coefficients. We have characteristic equation

$r^2-3r+1=\left(r-\dfrac{3+\sqrt5}2\right)\left(r+\dfrac{3+\sqrt5}2\right)=0$

so that the characteristic solution is

${x_2}_C=C_1e^{(3+\sqrt5)/2\,t}+C_2e^{-(3+\sqrt5)/2\,t}$

Now let's suppose the particular solution is ${x_2}_p=ae^t$ . Then

${x_2}_p={{x_2}_p}'={{x_2}_p}''=ae^t$

and so

$ae^t-3ae^t+ae^t=-ae^t=e^t\implies a=-1$

Thus the general solution for $x_2$ is

$x_2=C_1e^{(3+\sqrt5)/2\,t}+C_2e^{-(3+\sqrt5)/2\,t}-e^t$

and you can find the solution $x_1$ by simply differentiating $x_2$ .

7 0

3 years ago

Find (−3d2+10d−8)−(7d2−d−6). The difference is .

katovenus [111]

-10d^2 + 11d - 2

To find this, distribute the - to 7d^2 - d - 6.

This will give you a new equation of:

-3d^2 + 10d - 8 -7d^2 + d + 6

Combine like terms to get the answer above.

Hope this helps!

3 0

3 years ago

Which expressions are equivalent to 1 divided m/6? Check all that apply

jenyasd209 [6]

Answer:

option A, option C, option D

Step-by-step explanation:

a) 1 ÷ m/6

can be written as

$\frac{1}{1}$ ÷ $\frac{m}{6}$

b) sides in (m/6) will change if both has to multiply

c) 1 ÷ m/6

can be written as

1 * 6/m

1( $\frac{6}{m}$ ) and wont make change to answer. so matches with the question.

1 ÷ m/6

1 * 6/m

1 * 6 * $\frac{1}{m}$

6 * $\frac{1}{m}$

6 ÷ m ..therefore true

1 ÷ m/6

1 * 6/m

6/m ....does not match or can be converted to the following so wrong

Therefore A, C, D are correct and B and E is wrong.

6 0

3 years ago