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Andrej [43]
4 years ago
11

What two numbers added together get -20 but when multiplied gets 20?

Mathematics
1 answer:
exis [7]4 years ago
7 0
X + y = -20

xy = 20

x = -20 -y

-20y - y^2 = 20

y^2 + 20y + 20 = 0

y = -1.056  and x = -18.94

or vice versa
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The sum of three consecutive even numbers is one hundred sixty-two. What is the smallest of the three numbers?
zepelin [54]
Since the numbers are consecutive, they must be near each other in size, and therefore near one-third of 168. And since the lower number is -2 off the middle, and the upper number is +2 from the middle, the middle number must be exactly one-third of 168—otherwise the sum of the three could never be 168. Labelling the three consecutive numbers as x, y, and z:

x + y + z = 168

(y-2) + y + (y+2) = 168.

3y = 168

y = 56

therefore the smallest number (x) = 54.
436 viewsView upvotes

1




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3 years ago
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Alla [95]
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As you can observe, the two properties form a mirror image (reflection) vertically (or across the y-axis). However, it is moved downwards by 10 units. To guide you, count the units of distance between the two topmost points of each of the two parallelograms. The answer is letter A.

8 0
4 years ago
Find the surface area of composite figure. use 3.14 for π. round to the nearest tenth
777dan777 [17]

Answer:

334 in^2.

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3 0
2 years ago
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jenyasd209 [6]

Answer:

−

1

⋅

9

2

=

1

2

x-1 \cdot \frac{9}{2}=12x

x−1⋅29​=12x

Solve

1

Multiply the numbers

−

1

⋅

9

2

=

1

2

x{\color{#c92786}{-1}} \cdot {\color{#c92786}{\frac{9}{2}}}=12x

x−1⋅29​=12x

−

9

2

=

1

2

x{\color{#c92786}{-\frac{9}{2}}}=12x

x−29​=12x

2

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9

2

\frac{9}{2}

29​

to both sides of the equation

3

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Step-by-step explanation:

6 0
3 years ago
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Gala2k [10]

Step-by-step explanation:

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b) Number of favorable outcomes = Number of red cards = 26

P(red card) = 26/52 = 1/2

c) Number of favorable outcomes = Number of cards that are not hearts = 39/52 = 3/4

7 0
3 years ago
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