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Shtirlitz [24]
2 years ago
7

PLEASEE HELPPP TEST DUE IN 20 MINUTES!! A Question 2 (2 points) Retake question

Mathematics
2 answers:
shtirl [24]2 years ago
6 0

Answer:

D. 25

Step-by-step explanation:

To find the new value of c when completing the square, use the formula (\frac{b}{2} )^{2}.

Plugging in the given values:

(\frac{10}{2} )^{2}

(5)²

= 25

hope this helps!

prohojiy [21]2 years ago
5 0

Answer:

25

Step-by-step explanation:

when solving the equation, you're going to add have the coefficient of x to bothsides.

from the question, the coefficient of x is 10 and half of it is 5

5^2= 25

<h2>hope this helps!!!</h2><h2>please rate and mark brainliest.</h2>
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Step-by-step explanation:

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3 years ago
The following integral requires a preliminary step such as long division or a change of variables before using the method of par
shtirl [24]

Division yields

\dfrac{x^4+7}{x^3+2x} = x-\dfrac{2x^2-7}{x^3+2x}

Now for partial fractions: you're looking for constants <em>a</em>, <em>b</em>, and <em>c</em> such that

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\implies 2x^2 - 7 = a(x^2+2) + (bx+c)x = (a+b)x^2+cx + 2a

which gives <em>a</em> + <em>b</em> = 2, <em>c</em> = 0, and 2<em>a</em> = -7, so that <em>a</em> = -7/2 and <em>b</em> = 11/2. Then

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Now, in the integral we get

\displaystyle\int\frac{x^4+7}{x^3+2x}\,\mathrm dx = \int\left(x+\frac7{2x} - \frac{11x}{2(x^2+2)}\right)\,\mathrm dx

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\displaystyle \int x\,\mathrm dx + \frac72\int\frac{\mathrm dx}x - \frac{11}4 \int\frac{\mathrm dy}y \\\\ =\displaystyle \frac{x^2}2+\frac72\ln|x|-\frac{11}4\ln|y| + C \\\\ =\displaystyle \boxed{\frac{x^2}2 + \frac72\ln|x| - \frac{11}4 \ln(x^2+2) + C}

7 0
2 years ago
Given the data presented in the bar graph, which age group represents 25% of the people at the family reunion? A) 10−19 B) 20−29
Dmitriy789 [7]

Answer:

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2 years ago
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