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dusya [7]
3 years ago
15

4^(x-1)+4^(x)+4^(x-1)=84

Mathematics
1 answer:
creativ13 [48]3 years ago
3 0

Answer:

7.66

Step-by-step explanation:

Just open the parenthesis.

4x-4+4x+4x-4=84

Now simplify and solve

12x-8=84

12x=92

x= 7.66

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A rectangle has a perimeter of 103.6 inches and a base of 39 inches. What is the height?
rusak2 [61]

Answer:

12.8 IN.

Step-by-step explanation:

So, what exactly is perimeter?

Perimeter= 2L+ 2W

In this question we were given the length.ie.Base and the perimeter itself.

●Length is 39 In.

●Perimeter is 103.6 In.

●We don't know the width.

But, as per given the question, we know that;

1 length = 39 In.

2 lengths= 78 In.

Now that we know the <u>total</u><u> </u><u>length</u><u> </u><u>we</u><u> </u><u>can</u><u> </u><u>find</u><u> </u><u>the</u><u> </u><u>total</u><u> </u><u>width</u><u>.</u>

See as follows,

103.6 - 78= 25.6

<u>2</u><u> </u><u>widths</u><u>=</u><u> </u><u>25</u><u>.</u><u>6</u>

<u>1</u><u> </u><u>width</u><u>=</u><u> </u><u>25</u><u>.</u><u>6</u><u>÷</u><u>2</u>

<u>=</u><u>12</u><u>.</u><u>8</u><u> </u><u>In</u>

5 0
3 years ago
Factor this polynomial completely.<br> 12x2+x-6
jonny [76]

Answer:

(

4

x

+

3

)

(

3

x

−

2

)

Step-by-step explanation:

8 0
3 years ago
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Need help plz its on the screenshot
user100 [1]
The answers are a and c
4 0
3 years ago
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Evaluate.<br> -8+ (6 + 4) = (-2)<br> 0 – -13<br> -<br> -<br> o - 4<br> 0 -3<br> -<br> o - 1
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6 0
3 years ago
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The sweater department ran a sale last week and sold 95% of the sweaters that were on sale. 38 sweaters were sold. How many swea
almond37 [142]

Answer: 40.

Step-by-step explanation:

Given : The sweater department ran a sale last week and sold 95% of the sweaters that were on sale.

95% can be written as 0.95  [ by dividing 100 ]

Also, the number of sweaters sold = 38

Let x be the number of sweaters were on sale.

Then , we have the following equation :_

0.95x=38\\\\\Rightarrow\ x=\dfrac{38}{0.95}=\dfrac{3800}{95}=40

Hence, 40 sweaters were on sale.

6 0
4 years ago
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