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2 years ago

Answer each question and explain your reasoning.

Mathematics

2 answers:

beks73 [17]2 years ago

7 0

1. 30 mins
2. 6 mins
3. 45 mins

SVETLANKA909090 [29]2 years ago

5 0

Answer:

1. 30 mins

Step-by-step explanation:

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2 years ago

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Use the slope formula to find the slope between the given two points. (-4, -1) and (-2, -5)

Aleks04 [339]

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y2 -y1 over x2 - x1

Step-by-step explanation: plz mark brainliest

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3 years ago

Solve for the variable rin this equation: a(c+b)=d

strojnjashka [21]

Answer:

The answer is option A c=d-ab\a

Step-by-step explanation:

Solution,

here

a(c+b) =d

or, ac+ab=d

or, ac=d-ab

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2 years ago

Why is the answer to this integral's denominator have 1+pi^2

ss7ja [257]

It comes from integrating by parts twice. Let

$I = \displaystyle \int e^n \sin(\pi n) \, dn$

Recall the IBP formula,

$\displaystyle \int u \, dv = uv - \int v \, du$

Let

$u = \sin(\pi n) \implies du = \pi \cos(\pi n) \, dn$

$dv = e^n \, dn \implies v = e^n$

Then

$\displaystyle I = e^n \sin(\pi n) - \pi \int e^n \cos(\pi n) \, dn$

Apply IBP once more, with

$u = \cos(\pi n) \implies du = -\pi \sin(\pi n) \, dn$

$dv = e^n \, dn \implies v = e^n$

Notice that the ∫ v du term contains the original integral, so that

$\displaystyle I = e^n \sin(\pi n) - \pi \left(e^n \cos(\pi n) + \pi \int e^n \sin(\pi n) \, dn\right)$

$\displaystyle I = \left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n - \pi^2 I$

$\displaystyle (1 + \pi^2) I = \left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n$

$\implies \displaystyle I = \frac{\left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n}{1+\pi^2} + C$

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2 years ago

Square root of negative 72

Zina [86]

Answer:

i $6\sqrt{2} , i$

( the comma means there is space between the sqrt of 2 and the i.

Hope this helped and plz mark as brainliest!

Luna G.

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3 years ago