3 years ago

Brainliest to best PLEASE!!

Mathematics

1 answer:

jeka57 [31]3 years ago

4 0

Step-by-step explanation:

This is the answer i guess thank me if its right

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If 2^(x+3) - 2x = k(2^x) what is the value of k

svlad2 [7]

Answer:

$\large\boxed{C)\ 7}$

Step-by-step explanation:

Use:

$a^n\cdot a^m=a^{n+m}$

$2^{x+3}-2^x=2^x\cdot2^3-2^x=8\cdot2^x-2^x=(8-1)\cdot2^x=7\cdot2^x\\\\2^{x+3}-2^x=k(2^x)\\\\7\cdot2^x=k(2^x)\Rightarrow k=7$

$8\cdot2^x-2^x=8\cdot2^x-1\cdot2^x=(8-1)(2^x)=7\cdot2^x\\\\\text{distributive property:}\ a(b-c)=ab-ac$

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3 years ago

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Basile [38]

Answer:

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Step-by-step explanation:

Long division.

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Write the slope intercept form through: (5,1) and(2, -2)

victus00 [196]

We see that the slope of this line is $\frac{-2-1}{2-5}=1,$ so we plug this and the point $(5,1)$ into the point-slope form $y-y_1=m(x-x_1)$ (note that there's nothing special about the point I picked; you can choose any point on the line):

$y-1=x-5.$ This rearranges to the slope-intercept form $\boxed{y=x-4}.$

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3 years ago

1/4 divided by 6 is ___

creativ13 [48]

Answer:

1/24

Step-by-step explanation:

1/4*1/6=1/24

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Multiply and simplify: (2b2+2b)2

sveta [45]

Answer:

4b^2+2b (b^2 means b squared)

Step-by-step explanation:

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