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3 years ago

What are the solutions to the system of equations? x2 + y2 = 5 y = 2x.

Mathematics

2 answers:

Gnesinka [82]3 years ago

6 0

<h2>Answer:</h2><h2>(1, 2) and (- 1, - 2)</h2>

Therse is no stoep-bry-sterp explanyation :(

could you read the two sentences in one? ;)

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Continue.......↓↓↓↓↓↓↓↓↓

Are you still there?

You are very patient :)

Okay okay, you have waited long enough.

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Answer:

1st sentence, "There is no step-by-step explanation :(

2nd sentence, "sorry"

Scroll down for more....↓↓↓↓↓

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Colt1911 [192]3 years ago

4 0

Answer:

(1, 2) and (- 1, - 2)

Step-by-step explanation:

Given the 2 equations

x² + y² = 5 → (1)

y = 2x → (2)

Substitute y = 2x into (1)

x² + (2x)² = 5, that is

x² + 4x² = 5

5x² = 5 ( divide both sides by 5 )

x² = 1 ( take the square root of both sides )

x = ± $\sqrt{1}$ = ± 1

Substitute these values into (2) for corresponding values of y

x = 1 → y = 2(1) = 2 ⇒ (1, 2)

x = - 1 → y = 2(- 1) = - 2 ⇒ (- 1, - 2)

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Is figure B a scaled copy of figure A

artcher [175]

We know scale factor(k)=y/x

Calculate units as 1 and find k

For left side

$\\ \sf\longmapsto k=\dfrac{5}{3}$

For base

$\\ \sf\longmapsto k=\dfrac{4}{4}=1$

Hence its not a copy

4 0

3 years ago

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1) What is the opposite of adding 5?

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Answer:

1. subtracting 5

2. adding 20

3. dividing by 1/2

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Two triangles are similar.The the smaller triangle has side 10,20 and 15 units the larger triangles longest side is 52 units.Wha

Oliga [24]

Answer: The perimeter of the largest triangle = 117 units.

Step-by-step explanation:

Sides of smaller triangle = 10,20 and 15 units

Longest side = 20 units

Longest side of larger triangle = 52 units

Sides of two similar triangles are proportional.

Let k be proportionality constant.

$k=\dfrac{\text{Length in larger triangle}}{\text{Length in smaller triangle}}$

$k=\dfrac{52}{20}\\\\\Rightarrow\ k=\dfrac{13}{5}$

Length of other two sides,

$10\times\dfrac{13}{5}, 15\times\dfrac{13}{5}\ i.e.\ 26\text{ units}, 39\text{ units.}$

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Perimeter of largest triangle = 52 +26+39 = 117 units

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4 0

3 years ago

Using sum or difference formulas, find the exact value of sin(165∘)

Nikitich [7]

$\bf \textit{Sum and Difference Identities}
\\ \quad \\
sin({{ \alpha}} + {{ \beta}})=sin({{ \alpha}})cos({{ \beta}}) + cos({{ \alpha}})sin({{ \beta}})
\\ \quad \\
sin({{ \alpha}} - {{ \beta}})=sin({{ \alpha}})cos({{ \beta}})- cos({{ \alpha}})sin({{ \beta}})\\\\
-------------------------------\\\\$

$\bf sin(165^o)\implies sin(120^o+45^o)
\\\\\\
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\\\\\\
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What is the slope of the line that contains the points (13,-2) and (3,-2)?

vovangra [49]

Answer:

Slope=0

Step-by-step explanation:

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