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STatiana [176]
2 years ago
13

Easy Question>>?????????????help

Mathematics
2 answers:
mamaluj [8]2 years ago
8 0

Answer:

148 degrees... if it's so easy then why u couldn't u answer it

VMariaS [17]2 years ago
6 0

Answer:

thanswer to this is...................

Step-by-step explanation:

unknown

or 148 degrees

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Rational numbers are _____ natural numbers. <br><br> A.always<br> B.sometimes<br> C.never
shepuryov [24]
Rational numbers are basically numbers which are in the form of p/q where p and q are not equal to 0
Therefore p can be both +ve and -ve
But Natural numbers start from 1 , ie they are always positive
Therefore the answer is
B. sometimes
6 0
3 years ago
Read 2 more answers
If she sells her maths book for 10€ at a loss of 60% how much did she originally pay for the book
spin [16.1K]

Answer:

She originally paid 25 pounds

Step-by-step explanation:

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3 years ago
Please help with this calculus problem!
ELEN [110]
\dfrac{\mathrm dQ}{\mathrm dt}=\dfrac{a(1-5bt^2)}{(1+bt^2)^4}
Q(t)=\displaystyle\int\frac{a(1-5bt^2)}{(1+bt^2)^4}\,\mathrm dt

Let t=\dfrac1{\sqrt b}\tan u, so that \mathrm dt=\dfrac1{\sqrt b}\sec^2u\,\mathrm du. Then the integral becomes

\displaystyle\frac a{\sqrt b}\int\frac{1-5b\left(\frac1{\sqrt b}\tan u\right)^2}{\left(1+b\left(\frac1{\sqrtb}\tan u\right)^2\right)^4}\sec^2u\,\mathrm du
=\displaystyle\frac a{\sqrt b}\int\frac{1-5\tan^2u}{(1+\tan^2u)^4}\sec^2u\,\mathrm du
=\displaystyle\frac a{\sqrt b}\int\frac{1-5\tan^2u}{\sec^6u}\,\mathrm du
=\displaystyle\frac a{\sqrt b}\int(\cos^6u-5\sin^2u\cos^4u)\,\mathrm du
=\displaystyle\frac a{\sqrt b}\int(6\cos^2u-5)\cos^4u\,\mathrm du

One way to proceed from here is to use the power reduction formula for cosine:

\cos^{2n}x=\left(\dfrac{1+\cos2x}2\right)^n

You'll end up with

=\displaystyle\frac a{16\sqrt b}\int(5\cos2u+8\cos4u+3\cos6u)\,\mathrm du
=\displaystyle\frac a{16\sqrt b}\left(\frac52\sin2u+2\sin4u+\frac12\sin6u\right)+C
=\dfrac a{32\sqrt b}(5\sin2u+4\sin4u+\sin6u)+C
Q(t)=\dfrac{at}{(1+bt^2)^3}+C
6 0
3 years ago
Find x.<br> 2x + 40<br> 3x<br> 4x<br> X + 50<br> x= [?]<br> I<br> Enter
Oxana [17]

Answer:

x = 27

Step-by-step explanation:

A shape exterior angles add up to 360.

All of these angles are exterior angles so we can add up all of them to and set it equal to 360 to find x.

3x + 4x + 2x + 40 + x + 50

10x + 90 = 360

10x = 270

x = 27

6 0
3 years ago
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