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Simora [160]
3 years ago
13

the diameter of a cicrle is 72.4 millimeters . find the area of this circle in square millimeters. round your answer to the appr

opriate number of significant
Mathematics
1 answer:
Temka [501]3 years ago
4 0

Answer:

4,116.9mm² (rounded up to nearest one decimal point)

Step-by-step explanation:

Diameter of a circle is 72.4mm (where mm stands for millimeters)

Area of a circle is given by πr²

Radius (r) = 72.4mm ÷ 2 = 36.2mm

Area = π × (36.2mm)² = 4,116.868677mm²

That is  4,116.9mm² (rounded up to one decimal point)

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What conic section is drawn by the parametric equations x=csc t and y cot?
Vanyuwa [196]
If we take the square of x and square of y and then subtract them:
                         (csc t)²-(cot t)²=1                      ( this eq. gets from basic identity 
                               x²-y²=1......a                                               1+cot²x=csc²x)
  
 equation 'a' represent the equation of hyperbola which is (x²/a²)-(y²/b²) =1 with given conditions( a=1,b=1)

So, option D is correct
3 0
3 years ago
Find the slope of the line passing through the pair of points and describe the line as rising,falling,horizontal or vertical
Nataly_w [17]

To find the slope of a line, we must find the change in y values divided by the change in x values, given by the formula y2-y1/x2-x1 and represented by the variable m. We use our values from the ordered pairs to compute the slope, as follows:

m = (5-1)/(4-2) = 4/2 = 2

Therefore, the slope is 2. Because the slope is positive, this means that the line is rising.

Hope this helps!

4 0
3 years ago
Which inequalities is -5 a possible solution?
coldgirl [10]

Answer:

1st, 3rd and second last one

5 0
2 years ago
Help Please.<br><br> If 7m - 3 = 53. What is the value of 11m + 2?
Pachacha [2.7K]

Answer:

90.

Step-by-step explanation:

7m - 3 = 53

m would be 8 because 56 - 3 = 53.

11m + 2 equals 90 because 11 times 8 (8 is m) is 88, which added by two is 90.

4 0
3 years ago
F(x+1)+f(x+2)=2x+3; f(x)=?
Rama09 [41]

Answer:

F=\frac{-xf+f+2x}{x+1};\quad \:x\ne \:-1

Step-by-step explanation:

1. \mathrm{Subtract\:}f\left(x+2\right)\mathrm{\:from\:both\:sides}\\&#10;F\left(x+1\right)+f\left(x+2\right)-f\left(x+2\right)=2x+3f-f\left(x+2\right)&#10;&#10;

2. \mathrm{Simplify}\\&#10;F\left(x+1\right)=-xf+f+2x\\&#10;

3. \mathrm{Divide\:both\:sides\:by\:}x+1;\quad \:x\ne \:-1\\&#10;\frac{F\left(x+1\right)}{x+1}=-\frac{xf}{x+1}+\frac{f}{x+1}+\frac{2x}{x+1};\quad \:x\ne \:-1

4. \mathrm{Simplify}\\&#10;F=\frac{-xf+f+2x}{x+1};\quad \:x\ne \:-1

Final Answer: F=\frac{-xf+f+2x}{x+1};\quad \:x\ne \:-1

4 0
2 years ago
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