Step-by-step explanation:
The answer is A
When rounding a number, the digit of the number can be increased up to 1, but the digit won't be decreased. So, it is possible to round a five digit number into six digit number. But to increase the number digit, the number should be rounded up. To be rounded up, a number should have value 5 or more.
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Find area of the border :
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Area of the room = 22 x 25 = 550 ft²
Area of the rug = 238 ft²
Area of the border = 550 - 238 = 312 ft²
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Define y:
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Let the width be y.
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Find area of the border in term of y :
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The area of the border = 22y x 2 + 25y x 2 - 4y² = 94y - 4y²
*We need to take away 4y² because the 4 corners will be overlap twice if we don't.
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Solve y :
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94y - 4y² = 312
4y² - 94y + 312 = 0
2y² - 47y + 156 = 0
<span>(y - 4)(2y - 39) = 0
</span>y = 4 or y = 19.5
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Answer: The border can be 4 ft or 19.5 ft
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Answer:
<em>no solution</em>
Step-by-step explanation:
Try getting a variable by itself, (I'm going to do so with 2x)
In order to do that I need to subtract 3y from both sides
The equation should now be
2x= -3y+4
Now divide by 2 to get x by itself
x= -3/2y+2
You can now plug x into 4x+6y=9
4(-3/2y+2)+6y=9
Distribute 4
-6y+8+6y=9
y cancels out and you're left with 8=9, which is untrue, so the answer is no solution
Step-by-step explanation:
the answer to the question
