3 years ago

I NEED HELP!! WITH NUMBER 4 BOTH ANSWERS

Mathematics

2 answers:

ElenaW [278]3 years ago

6 0

Answer:

1st Question- Positive Twelve

Second Question- Negative Twelve

Step-by-step explanation:

tester [92]3 years ago

5 0

Answer:

The first one is 12

The second one is -12

Just multiply, and remember the negative signs.

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<img src="https://tex.z-dn.net/?f=4%20%5Ctimes%208%20%5E%7B2x%20%2B%201%3F%7D%20%20%3D%2032%20%5E%7Bx%20%2B%202%7D%20" id="TexFo

svet-max [94.6K]

Answer:

x = 5

Step-by-step explanation:

__________________________________________________________

FACTS TO KNOW BEFORE SOLVING :-

$a^x \times a^y = a^{x+y}$

In an equation , if the bases are same in both L.H.S. & R.H.S. then , the power of the bases on both the sides of equation should be equal. For e.g. : $a^x = a^y$ ⇒ $x = y$ [∵ Bases are equal on both the sides]

__________________________________________________________

$4 \times 8^{2x+1} = 32^{x+2}$

Lets express it in terms of 2.

$=> 2^2 \times 2^{3 (2x+1)} = 2^{5(x+2)}$

$=> 2^2 \times 2^{6x+3} = 2^{5x+10}$

$=> 2^{2 + 6x+3} = 2^{5x+10}$

$=> 2^{6x+5} = 2^{5x+10}$

Here the bases on both the sides are equal. Hence ,

$=> 6x + 5 = 5x + 10$

$=> 6x - 5x = 10 - 5$

$=> x = 5$

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3 years ago

Linear Equations Question 2 What is the y-intercept in the equation y = 4x - 3?

viktelen [127]

The y intercept is -3

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wolverine [178]

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Which stem-and-leaf plot represents the data 80, 81, 91, 92, 66, 55, 54, 30, 55, 79, 78?

const2013 [10]

Convert the given data into ascending order.
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Total counts=11
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3 | 0
5 | 4 5 5
6 | 6
7 | 8 9
8 | 0 1
9 | 1 2

This is the required stem leaf plot.

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3 years ago

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nataly862011 [7]

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3 years ago