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3 years ago

What is 2/3 ➗ 1/6? 2 3 4 6

Mathematics

1 answer:

MrMuchimi3 years ago

8 0

Answer:

12/3=4

Step-by-step explanation:

it's 4, 2/3's stay the same. do the reciprocal on 1/6 which will be 6/1 and multiply

2/3(6/1)=12/3

and turn it to a mixed fractions and you would get 4

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Not physically possible

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Given m || n, find the value of x and y.

cupoosta [38]

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x=-16

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set the equation equal to each other then solve

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Select the Ratio that is not equivalent to the rest.

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3 years ago

Solve the equation 2^(2x+1)+8=17×2^x.

myrzilka [38]

Oooh, looks fun

ok
erm
we might want to know some properties
$(x^m)(x^n)=x^{m+n}$
$(a^b)^c=a^{bc}$
if $a^m=a^n$ where a=a, then assume m=n

$2^{2x+1}=(2^{2x})(2^1)$
so
$(2^{2x})(2)+8=17(2^x)$
$(2^{2x})(2)+2^3=17(2^x)$
$(2^x)^2(2)+2^3=17(2^x)$
minus 17*2^x both sides
$(2^x)^2(2)+2^3-17(2^x)=0$
use u subsitution, u=2ˣ
$(u)^2(2)+2^3-17(u)=0$
solve $2u^2+8-17u=0$
or
$2u^2-17u+8=0$
ac method
2 times 8=16
what 2 number multiply to get -17 and add to get 16
-16 and -1
2u²-1u-16u+8=0
(2u²-1u)+(-16u+8)=0
u(2u-1)+(-8)(2u-1)=0
(u-8)(2u-1)+0
u-8=0
u=8

2u-1=0
2u=1
u=1/2

now
u=2ˣ

8=2ˣ
$2^3=2^x$
3=x

and
$\frac{1}{2}=2^x$
$2^{-1}=2^x$
-1=x

x=-1 and 3
neat problem

8 0

3 years ago