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riadik2000 [5.3K]
3 years ago
7

Find area of a quadrant of a circle whose radius is 3.5 cm.

Mathematics
1 answer:
kati45 [8]3 years ago
4 0

Area of full circle= πr^2

Area of a quadrant= πr^2/4

=(3.5)^2π/4

=12.25π/4

=3.06πcm squared.

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How many points need to be removed from this graph so
astraxan [27]

Answer:

OPtion 3 points

Step-by-step explanation:

See the attached figure.

As shown, we can notice that the coordinates of all the points are (-3,2), (-3,3), (1,4), (1,-4), (2,-2), (2,-4).

The figure will be a function if for each value of x there exist a unique value of y.

In the figure, for each value of x we have two values of y. So it is not a function. We need to remove any of ordered pairs that have same input values.

From (-3,2) and (-3,3), we need to remove one point.

From (1,4) and (1,-4), we need to remove one point.

From (2,-2) and (2,-4), we need to remove one point.

It means total we need to remove 3 points from this graph so that it will be a function.

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4 0
3 years ago
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Alex73 [517]

Answer:

y = -3x + 7

Step-by-step explanation:

First calculate the slope which I will assign the variable m

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m = -9/3

m = -3

Next, using the slope we just found, pick either point and plug into the point slope equation: (I like the first point better so I am going to use that one)

y-y1 = m(x-x1)

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6 0
3 years ago
Claire’s backyard is in the shape of a rectangle, with dimensions shown in the diagram. To complete some landscaping work, she’d
Delvig [45]

Answer:

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Side A (Between angle A and B): 12.5 ft

Side B (Between angle B and C): 21.65 ft

Side C (Between angle C and A): 25 ft

Now you can use these formulas to find the Area and Perimeter.

Area for a right triangle: Base (longest side) x Height (shortest side) Divided by 2... since you are calculating two of these triangles you don't need to divide.

Perimeter of a triangle: Add the length of all of the sides but instead of doing the individual triangles, just do Side A+ Side B + Side A+ Side B (or Side A + Side B x 2).

And you will get ur answer

Hope this helps ;)

4 0
2 years ago
Read 2 more answers
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LenKa [72]
Uh i think it's 18 and 7?
5 0
3 years ago
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lukranit [14]

Your supposed to add the like terms and 7x and 6x are like terms so you add those and get 13x and 9 and 2 are like terms and when you add them you get 11 and the answer of the first part of the equation is 13x + 11

8 0
3 years ago
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