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steposvetlana [31]
3 years ago
13

Answer it. -10 x -2 =

Mathematics
2 answers:
pav-90 [236]3 years ago
6 0
The answer to -10 x -2 is 20
sergey [27]3 years ago
4 0

Answer: 20

Step-by-step explanation: it is 20 because 2 negative numbers multiplied by each other will always be positive

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The circumference of a circular painting is 53.38 feet. What is the radius of the painting? Use 3.14 for pi and do not round you
bazaltina [42]
The circumference or perimeter of the circle has the formula 2*pi*r, where r is the radius of the circle. This could then be easily calculated:

C = 2*pi*r
53.38 = 2*3.14*r
53.38 = 6.28r
r = 53.38/6.28
r = 8.5 ft

Thus, the radius of the circle has a length of 8.5 feet.
5 0
3 years ago
What is the standard form equation of an ellipse that has vertices (18,1) and (−10,1) and co-vertices (4,14) and (4,−12)?
viktelen [127]

Answer: \frac{(x-4)^2}{196} +\frac{(y-1)^1}{169} =1

Step-by-step explanation:

You first need to determine if the ellipse is horizontal or vertical, which can be found by the length of the major axis.

The vertices are at (18,1) and (-10,1). The distance is 28 units.  (horiz)

The co-vertices are at (4,14) and (4,-12) The distance 26 units (vert)

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\frac{(x-h)^2}{a^2} +\frac{(y-k)^2}{b^2} =1 where (h,k) are the coordinates of the center.

To find the center, find the midpoint of the major axis (\frac{x1+x2}{2} ,\frac{y1+y2}{2} )

The center is at (4,1)

Since the major axis is 2a, a would be 28 divided by 2=14 squared : 196

The minor axis is 2b, so b would e 26/2=13 squared: 169

Inserting the center and a,b values into the standard form eq:

\frac{(x-4)^2}{196} +\frac{(y-1)^1}{169} =1

hope this helps.

6 0
1 year ago
The formula for the volume of a cylinder is Y = gr). Solve y = grn for h, the height of the cylinder. O A. = O B. has Yr2 OC. h
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Since we have to solve the given formula for h(height) so, the correct option is (a)
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3 years ago
Which of the following is the least? A. 0.105 B. 0.501 C. 0.015 D. 0.15
Naddika [18.5K]
C is the least that is beause it is .015  which is smaller than 0.15
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2 years ago
(50 POINTS) Express each sum using summation notation.
vesna_86 [32]

14: a

1

=

39

/2                              0.25               313%        16%

15:     54

4 0
2 years ago
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