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2 years ago

A. 9+ 2 < 17 or 7− 4 < −9

Mathematics

1 answer:

Ira Lisetskai [31]2 years ago

4 0

Answer:9+2<17

Step-by-step explanation:

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Find f^(-1)for the function f(x)= (1)/(x+2)

Artyom0805 [142]

If $f(x)$ and $f^{-1}(x)$ are inverses of each other, then we have

$f\left(f^{-1}(x)\right) = x$

Since $f(x) = \frac1{x+2}$ , we have

$f\left(f^{-1}(x)\right) = \dfrac1{f^{-1}(x)+2} = x$

Solve for $f^{-1}(x)$ :

$\dfrac1{f^{-1}(x)+2} = x \\\\ 1 = x\left(f^{-1}(x)+2\right) \\\\ 1 = x f^{-1}(x) + 2x \\\\ x f^{-1}(x) = 1 - 2x \\\\ f^{-1}(x) = \dfrac{1-2x}x \\\\ \boxed{f^{-1}(x) = \dfrac1x - 2}$

(provided that <em>x</em> ≠ 0 and <em>x</em> ≠ -2)

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2 years ago

(2^3)^7 (2^-9)^2 how do i put that in exponential form

jok3333 [9.3K]

Answer:

2³ = 8

Step-by-step explanation:

According to the laws of exponents, when raising a power to another power, you need to multiply the exponents. After you multiply each set of exponents by the additional power, then it become a multiplication problem where the base is the same. When multiplying exponents with the same base, you keep the base and add the exponents:

$(2^{3})^{7}*(2^{-9})^{2}=2^{21}*2^{-18}=2^{21+-18}=2^{3}$

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2 years ago

Considering the activity series given below for metals and nonmetals, which reaction will occur? al > mn > zn > cr >

victus00 [196]

The activity series is an arrangement of species in order of reactivity.

<h3>What is the activity series?</h3>

The activity series is an arrangement of species in order of reactivity. The position of a specie in the series determines the possibility of certain reactions.

The following are the fates of these reactions;

2NaBr + I2--------->2NaI + Br2 - Not possible
2Fe + Al2O3 ----------> 2Al + Fe2O3 - Not possible
2AgNO3 + Ni ----------> Ni(NO3)2 + 2Ag - possible
Pb + Zn(C2H3O2)2 ----------> Zn + Pb(C2H3O2)2 - Not possible

Learn more about activity series:brainly.com/question/18080147

#SPJ1

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1 year ago

Solve for z: yz + 4z = z - y²<br><br><br><br>

poizon [28]

Answer:

Step-by-step explanation:

yz+4z=z-y²

yz+4z-z=-y²

yz+3z=-y²

z(y+3)=-y²

$z=-\frac{y^2}{y+3 }$

3 0

2 years ago

PLEASE GUYS HELP ME :D

Debora [2.8K]

The answer is 24 because you have to do 6x4=24

7 0

3 years ago