2 years ago

Estimate the quotient using compatible numbers. 3,512 ÷ 9 30 400 300 40

Mathematics

1 answer:

madreJ [45]2 years ago

5 0

Answer:

400. just use simple devision and it'll tell you.

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What percent of 3,000 is 18

neonofarm [45]

Answer: 0.6%

Step-by-step explanation:

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3 years ago

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Rani rai sold two typewriters at Rs 1980 each . if the gained 10% in one and lost 10% in other ' find the gain or loss percentag

PilotLPTM [1.2K]

Answer:

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3 years ago

Let f(x) = x+2/x+6 f^-1(-6) =

GREYUIT [131]

We can explicitly find the inverse. If $f^{-1}(x)$ is the inverse of $f(x)$ , then

$f\left(f^{-1}(x)\right) = \dfrac{f^{-1}(x)+2}{f^{-1}(x)+6} = x$

Solve for the inverse :

$\dfrac{f^{-1}(x) + 2}{f^{-1}(x) + 6} = x$

$\dfrac{f^{-1}(x) + 6 - 4}{f^{-1}(x) + 6} = x$

$1 - \dfrac4{f^{-1}(x) + 6} = x$

$1 - x = \dfrac4{f^{-1}(x) + 6}$

$f^{-1}(x) + 6 = \dfrac4{1-x}$

$\implies f^{-1}(x) = \dfrac4{1-x} - 6$

Then when x = -6, we have

$f^{-1}(-6) = \dfrac4{1-(-6)} - 6 = \dfrac47-6 = \boxed{-\dfrac{38}7}$

Alternatively, we can first solve for x such that $f(x) = -6$ . Then taking the inverse of both sides, $x = f^{-1}(-6)$ . (The difference in this method is that we don't compute the inverse for all x.)

We have

$\dfrac{x+2}{x+6} = -6$

$x + 2 = -6 (x + 6)$

$x + 2 = -6x - 36$

$7x = -38$

$\implies x = \boxed{-\dfrac{38}7}$

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3 years ago

The relationship between voltage, E, current, I, and resistance, Z, is given by the equation E = IZ. If a circuit has a current

wlad13 [49]

E=IZ=(3 + 2i)(2 – i)=3*2-3i+2i*2-2i*i =6 - 3i+4i -2i²=6-2i²- 3i+4i =6+2+i=8+i

i²=-1

E=8+i

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3 years ago

A candle is in the shape of a cylinder. The candle has a diameter of 6 inches and a height of 5 inches What is the volume of the

mylen [45]

Answer: B. 141.3 cubic inches

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2 years ago