2 years ago

Evaluate the expression (-20)-17=

Mathematics

1 answer:

bazaltina [42]2 years ago

7 0

It’s -37 because -20-17=-37

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Find a closed-form solution to the integral equation y(x) = 3 + Z x e dt ty(t) , x > 0. In other words, express y(x) as a fun

MrMuchimi

Answer:

$y{x} = \sqrt{7+2Inx}$

Step-by-step explanation:

$y(x)= 3 + \int\limits^x_e {dx}/ \, ty(t) , x>0}$

Let say; By y(x)= y(e)

we have;

$y(e)= 3 + \int\limits^e_e {dt}/ \, ty= 3+0$

Using Fundamental Theorem of Calculus and differentiating by Lebiniz Rule:

$y^{1} (x) = 0 + 1/ xy$

$y^{1} = 1/xy$

dy/dx = 1/xy

$\int\limits {y} \, dxy = \int\limits \, dx/x$

$y^{2}/2 Inx + C$

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$\frac{9}{2} =In(e)+C$

$\frac{9}{2} - 1 = C$

$\frac{7}{2} = C$

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MULTIPLYING BOTH SIDE BY 2 , TO ELIMINATE THE DENOMINATOR, WE HAVE;

$y^{2} = {7+2Inx}$

$y{x} = \sqrt{7+2Inx}$

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3 years ago

Karma took a 50 question math test, but only 40 questions were correct. What was the percentage of correct answers?

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Answer:

85 percent

Step-by-step explanation:

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1 year ago

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Elena L [17]

Y= ∛(-x) - 3
for x = -8 → y = ∛-(-8) - 3 ↔ y = 2-3 ↔y = -1
for x= 8 → y= ∛(-8) - 3 ↔ y = -2 -3 ↔ y = -5
Then - 5≤ y≤ - 1
hence the range of y is {y|-5≤y≤-1}

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STatiana [176]

Answer:34

Step-by-step explanation:

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3 years ago

What is 4/5 of 20.5?

ira [324]

16.4
20.5/5=4.1
4.1*4=16.4
............

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2 years ago

Evaluate the expression (-20)-17=​

Evaluate the expression (-20)-17=