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Julli [10]
3 years ago
12

I dont understand linear equations,what is the purpose of a linear equation?

Mathematics
2 answers:
Hatshy [7]3 years ago
8 0

Answer:

it's a straight line graph

Step-by-step explanation:

it indicates something is directly proportional

Darina [25.2K]3 years ago
4 0

A linear equation in two variables describes a relationship in which the value of one of the variables depends on the value of the other variable. In a linear equation in x and y, x is called x is the independent variable and y depends on it. We call y the dependent variable.

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How do you do this question?
Nikitich [7]

Answer:

-30√(t/a) cos(√(at)) + 30/a sin(√(at)) + C

Step-by-step explanation:

∫ 15 sin(√(at)) dt

Use substitution:

If x = √(at), then:

dx = ½ (at)^-½ (a dt)

dx = a / (2√(at)) dt

dx = a/(2x) dt

dt = (2/a) x dx

Plugging in:

∫ 15 sin x (2/a) x dx

30/a ∫ x sin x dx

Integrate by parts:

If u = x, then du = dx.

If dv = sin x dx, then v = -cos x.

∫ u dv = uv − ∫ v du

= 30/a (-x cos x − ∫ -cos x dx)

= 30/a (-x cos x + ∫ cos x dx)

= 30/a (-x cos x + sin x + C)

Substitute back:

30/a (-√(at) cos(√(at)) + sin(√(at)) + C)

-30√(t/a) cos(√(at)) + 30/a sin(√(at)) + C

3 0
3 years ago
Need help on 12 and 11!! Hurry!!
jok3333 [9.3K]

11. 5/6

12.146/158=73/79

5 0
3 years ago
Use the following area model to multiply 29x97
alexandr402 [8]
The answer to 29×97 would be 2813
6 0
3 years ago
Pentru a culege nectar 45 de albine au vizitat, intr-o singura exeditie, unele 60 flori, iar altele 75 de flori . Stiing=d ca au
labwork [276]
69.3 I think hope that helps
7 0
2 years ago
Please solve this problem 5y+30=5()
nadya68 [22]
First you would subtract 30 from both sides 
they divide each side by 5 to get -7 
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3 years ago
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