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sergiy2304 [10]
3 years ago
8

Answer This question please I need help

Mathematics
1 answer:
Kisachek [45]3 years ago
7 0
457458y236u 12 433236223445568o08y32222333
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If a= 2^x and b =2^x+1; show that: 8a^3 / b^3 = 2^x+1​
kkurt [141]

Step-by-step explanation:

Given that:

a = 2ˣ

b = 2ˣ⁺¹ = 2ˣ * 2¹ = 2.2ˣ

Now,

{(8a³)/b²}

Substitute the value of x and y in expression then

= [{8(2ˣ)³}/(2.2ˣ)²]

= [(8*2³ˣ)/{2² * (2ˣ)²}]

= {(8*2³ˣ)/(4 * 2²ˣ)}

[since, (aᵐ)ⁿ = aᵐⁿ]

= {(2 * 2³ˣ)/2²ˣ}

= {(2 * 2²ˣ * 2ˣ)/2²ˣ}

[since (2a = a+a, that means 3x = 2x + x)]

= 2 * 2ˣ

= 2ˣ⁺¹

[since (aᵐ * aⁿ = aᵐ+ⁿ)]

<u>Answer:</u> Therefore, {(8a³)/b²} = 2ˣ⁺¹ .

Please let me know if you have any other.

7 0
2 years ago
How do I solve this Geometry problem?
tia_tia [17]

Answer:

you let other people do it also all in totle is 50,8 oe 3

Step-by-step explanation:

5 0
2 years ago
17% of what is 156?<br> I got 918. just checking my answer..
balu736 [363]
17% of 156 = 0.17 x 156
17% of 156  = 26.52

--------------------------------------
Answer: 26.52
--------------------------------------
4 0
3 years ago
Please help me with this
zvonat [6]

Answer:

Hey there!

The answer is 6/7h=4.

This means that 6/7 of his brother's height is four feet, which is Bryce's height.

Let me know if this helps :)

4 0
3 years ago
I need help please the friends would greatly appreciate it. plotted in the complex plane ... :)
zlopas [31]
Attached is a picture showing the plot in the plane.
Note that for a complex number ,  x + iy.
The real part of the number is put on the x axis and the imaginary part is put on the y axis.

So plotting:
A = 4 + 1i
B = 9 + 7i
C = 5 + 8i
 
See picture.

7 0
3 years ago
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