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Setler [38]
3 years ago
12

Fred has 45 books. Sally has 27 times more books than Fred. How many books does Sally have?

Mathematics
1 answer:
hodyreva [135]3 years ago
5 0

Answer:

fred = 45 books

sally has 27 times more book than fred

sally = 45 X 27

= 1215 books

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There+are+no+rational+numbers+that+are+also+whole+numbers
meriva
Actually all the whole numbers are kind of rational numbers like : 1/1 , 2/1 , 3/1 , ...
so there are some rational numbers that are whole numbers too :))
i hope this be helpful 
have a nice day 
8 0
3 years ago
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I need help with this one <br><br><br> Q15
kvv77 [185]

Answer:

2 + 3b

Step-by-step explanation:

2b + (2 + b) \\  \\ 2b + 2 + b \\ 2 + 3b

8 0
2 years ago
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URGENT HELP PLEASE!
Vaselesa [24]

Answer:

(a) x=\dfrac{\pi}{8},\dfrac{3\pi}{8},\dfrac{9\pi}{8},\dfrac{11\pi}{8}

(b) x=\dfrac{3\pi}{2},\dfrac{\pi}{6},\dfrac{5\pi}{6}

Step-by-step explanation:

It is given that 0\leq x\leq 2\pi.

(a)

\sqrt{2}\sin 2x=1

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2x=\dfrac{\pi}{4},\dfrac{3\pi}{4},\dfrac{9\pi}{4},\dfrac{11\pi}{4}     [\because \sin x=\sin y\Rightarrow x=n\pi+(-1)^ny]

x=\dfrac{\pi}{8},\dfrac{3\pi}{8},\dfrac{9\pi}{8},\dfrac{11\pi}{8}

(b)

\csc^2 x-\csc x-2=0

\csc^2 x-2\csc x+\csc x-2=0

\csc x(\csc x-2)+1(\csc x-2)=0

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\csc x=-1\text{ or }\csc x=2

\sin x=-1\text{ or }\sin x=\dfrac{1}{2}         [\because \sin x=\dfrac{1}{\csc x}]

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Therefore, x=\dfrac{3\pi}{2},\dfrac{\pi}{6},\dfrac{5\pi}{6}.

5 0
3 years ago
What is the equation of the line that passes through the point (-2,0) and has a slope of -2
Tcecarenko [31]

Answer:

y = -2x -4

Step-by-step explanation:

The equation of a line is y = mx + b, where m is the slope of the line, and b is the y-intercept.  We are told that the slope of the line is -2, so we can start with

y = mx + b

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-4 = b

Then plug that value of b back into the equation above:

y = -2x + (-4) or y = -2x -4

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3 years ago
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