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alexandr402 [8]
3 years ago
13

Which expression is equivalent to the area of metal sheet required to make this square-shaped traffic sign?

Mathematics
1 answer:
Nataly [62]3 years ago
4 0
The area of a square is A =  s^{2}, where s = length of a side of the square. You know the length of the square shaped traffic sign's side is s =<span> 2x-1. Plug that value into the equation for the area of the square and foil:
</span>A = s^{2} \\&#10;A = (2x-1)^{2} \\&#10;A = (2x-1)(2x-1)\\&#10;A = 4x^{2} - 4x + 1
<span>
The area of the square sign is D) </span>4x^{2} - 4x + 1
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What is greater 0.9 or 95%
Alex17521 [72]
0.9 = 90%
so 95% is larger

Alternatively, you can convert 95% to decimal form to get 0.95
Then compare 0.90 to 0.95 to see that 0.95 is larger
8 0
3 years ago
Divide 1.9 by 12 and write the quotient with the bar over the repetend
Nikitich [7]
The answer is 0.1583
5 0
3 years ago
N an
Lostsunrise [7]
<h3>Answer:</h3>

C)\ a_n=2a_{n-1}-1

<h3>Explanation:</h3>

You can try the choices to see which one works. The differences between an values double each time. They have the sequence 1, 2, 4, 8. So, you know that choices A) and D) do not work. They show the difference to be constant at 1 or 8. Since the differences are multiplied by 2, C) is a reasonable choice. Trying that, we find it describes the sequence perfectly:

a2 = 2·2 -1 = 3

a3 = 2·3 -1 = 5

a4 = 2·5 -1 = 9

a5 = 2·9 -1 = 17

___

Trying choice B on the last term, we have

... a5 = 3·a4 -3 = 3·9 -3 = <em>24 ≠ 17</em>

7 0
3 years ago
{A number line from negative 10 to 10 with tick marks every 1 unit. A closed dot is at negative 3 with a ray pointing left from
maks197457 [2]
Draw a number line from -10 to +10 with tick marks (division lines) every 1 unit.  Now find the origin (in the middle of the line you have just drawn).  Now move your pencil point 3 units to the left and plot a dark (closed) dot there.  Then draw a ray from that closed dot to the left.  Apparently we cannot extend that ray beyond -10.

(-10,-3] would be my representation of this situation.

6 0
3 years ago
The sum of three consecutive even numbers is 48. what is the largest of these numbers?
shutvik [7]
Let's name the three consecutive even numbers n, n+2, and n+4. We know that their sum will be divisible by 2 because they are all even, so we can set x = n/2, and say that x + x+1 + x+2 = 48/2 = 24. Then, we can solve for 3x + 3 = 24, 3x = 24-3 = 21, and x = 21/3 = 7.
Final answer: n/2 = 7, so n = 14, so n+4 (the greatest number) is 14+4 = 
18.
3 0
3 years ago
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