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marshall27 [118]
3 years ago
15

Add -3/x + 7/x. does anyone know this one

Mathematics
1 answer:
julsineya [31]3 years ago
4 0
You can’t do that cause you can’t add negatives and positives
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Which of the following is a factor of 3x3-12x2 +X-4 ?<br> A. X+3<br> B. X+2<br> C. X-4<br> D.X-1
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Answer:

B.x+2

Step-by-step explanation:

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Step-by-step explanation:

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When the area in square units of an expanding circle is increasing twice as fast as its radius in linear units
alexira [117]

Answer:

r=1/π

Step-by-step explanation:

Area of the circle is defined as:

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Derivating both sides

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If area of an expanding circle is increasing twice as fast as its radius in linear units. then we have : \frac{dA}{dt}  =2\frac{dr}{dt}

Therefore,

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r=1/π

5 0
3 years ago
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The perimeter of a rectangle is represented by 4x2 + 5x − 2. The perimeter of a smaller rectangle is represented by x2 + 3x + 5.
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Harriet rode her bike 2 miles to the mall.She then rode 3/4 mile to the grocery store.She came back the way she went.How many mi
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5 1/2 miles
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2 years ago
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