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SIZIF [17.4K]
2 years ago
13

Sixety five divided by fifteen ​

Mathematics
1 answer:
oee [108]2 years ago
7 0

Answer:

the answer is 4 with a remainder of three

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Evaluate the line integral, where C is the given curve. (x + 6y) dx + x2 dy, C C consists of line segments from (0, 0) to (6, 1)
Dima020 [189]

Split C into two component segments, C_1 and C_2, parameterized by

\mathbf r_1(t)=(1-t)(0,0)+t(6,1)=(6t,t)

\mathbf r_2(t)=(1-t)(6,1)+t(7,0)=(6+t,1-t)

respectively, with 0\le t\le1, where \mathbf r_i(t)=(x(t),y(t)).

We have

\mathrm d\mathbf r_1=(6,1)\,\mathrm dt

\mathrm d\mathbf r_2=(1,-1)\,\mathrm dt

where \mathrm d\mathbf r_i=\left(\dfrac{\mathrm dx}{\mathrm dt},\dfrac{\mathrm dy}{\mathrm dt}\right)\,\mathrm dt

so the line integral becomes

\displaystyle\int_C(x+6y)\,\mathrm dx+x^2\,\mathrm dy=\left\{\int_{C_1}+\int_{C_2}\right\}(x+6y,x^2)\cdot(\mathrm dx,\mathrm dy)

=\displaystyle\int_0^1(6t+6t,(6t)^2)\cdot(6,1)\,\mathrm dt+\int_0^1((6+t)+6(1-t),(6+t)^2)\cdot(1,-1)\,\mathrm dt

=\displaystyle\int_0^1(35t^2+55t-24)\,\mathrm dt=\frac{91}6

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2 years ago
Randomly picking a blue card from a bag containing all blue cards
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It’s question 14 I need help with please it’s due soon
belka [17]

if you are trying to work out -3/4 - (-1/4 - 1/2) then the answer is 0

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The probability of A is 7/20, the probability of A intersection B is 49/400 what is the probability of B?
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Answer:

n(A)+n(B)-49/400=n(AUB)

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Trinomial means three parts
A and C or trinomial's but the degree on a is at three and the degree of C is a one
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3 years ago
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