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I am Lyosha [343]
4 years ago
10

A first number plus twice a second number is 9. Twice the first number plus the second totals 27. Find the numbers

Mathematics
1 answer:
SOVA2 [1]4 years ago
6 0
Create a a system of 2 equations: 2x + y = 27 and 2y + x = 9, with x being the first number and y being the second. solve for the two variables and you'll get the first number is 15 and the second is -3.
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Oliga [24]

Answer:

B. (x, y) → (-x,-y)

This rule is given triangle is reflection  about origin or

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Step-by-step explanation:

<u>Explanation:-</u>

A triangle has coordinates at X(3,7),Y(6,7) and Z(4,2)

The Rule ( x, y)→ ( - x, -y)

<em>This rule is given triangle is reflection  about origin or Rotation clockwise or counter clock wise with 180°</em>

X( 3,7) → X¹ ( -3,-7)

Y(6,7) → Y¹ (-6,-7)

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3 years ago
Use subtraction<br> 8 x 25 x 23
andreyandreev [35.5K]

You cant subtract from a multiplication expression.

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3 0
4 years ago
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Answer:

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Step-by-step explanation:

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4 years ago
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Which points are the approximate locations of the foci of the ellipse? Round to the nearest tenth. (−2.2, 4) and (8.2, 4) (−0.8,
Studentka2010 [4]

The graph is attached.

Answer:

(-2.2, 4) and (8.2, 4)

Step-by-step explanation:

In an ellipse, there is a minor radius and a major radius.

Let major radius be = a

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From the graph, we are given:

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Minor radius, b = 3

Now, let's find the distance from the center to the focus using the formula:

\sqrt{a^2 - b^2}

Substituting values, we have:

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We can see from the graph that center coordinate is (3, 4). Therefore, the approximate locations of the foci of the ellipse would be:

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3 0
3 years ago
The function f(x)=5(1/5)^x is reflected over the y axis. Which equations represent the reflected function? Select two options.
NeX [460]

Answer:

\boxed{ \ \sf5(\dfrac{1}{5})^{-x}\ }

Step-by-step explanation:

As this is a reflection over the y axis we are looking for a function g so that

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so the correct answer is

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we can write it as

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you can see the graphs below

hope this helps

6 0
4 years ago
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