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o-na [289]
3 years ago
13

Please help me out on this :(( struggling !

Mathematics
1 answer:
Yuki888 [10]3 years ago
3 0

Answer:

answer is B

Step-by-step explanation:

step by step explanation

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Solve:<br><br> x^2 = 81<br><br> x^2 = -9 <br><br> x^2 = 20<br><br> 3x^2 = 125
sergeinik [125]
<span>x^2 = 81
x = </span>±√81
x = ±9<span>

x^2 = -9 no solutions 

x^2 = 20
x = </span>±√20
x = <span>±2</span>√5<span>

</span>3x^2 = 125 \\ &#10;x^2 =   \frac{125}{3} \\ x=б \sqrt{ \frac{125}{3} }<span>
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3 years ago
The population of a town is 13,000. It decreases at a rate of 5% per year. In about how many years will the population be less t
just olya [345]

This is an exponential decay problem.

Using the equation Y = a *(1-rate)^time

where Y is the future value given as 12,000 and a is the starting value given as 13,000.

The rate is also given as 5%.

The equation becomes:

12,000 = 13,000(1-0.05)^x

12,000 = 13,000(0.95)^x

Divide each side by 13000:

12000/13000 = 0.95^x/13000

12/13 = 0.95^x

Use the natural log function:

x = ln(12/13) / ln(0.95)

x = 1.56 years. ( this will equal 12,000

Round to 2 years it will be less than 12000.

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3 years ago
The area of a rectangle is 344 square inches. If the rectangle is 16 inches wide, find the perimeter of the rectangle.
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Its very confusing so sry

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Name the types of angles shown
monitta

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A

Step-by-step explanation:

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