3 years ago

Which pair of angles must be supplementary?

Mathematics

2 answers:

Alenkasestr [34]3 years ago

7 0

The answer is: <4 and <5

Volgvan3 years ago

6 0

Answer:

its actaully 4 and 1

Step-by-step explanation:

i took the test and past

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Which of the following is a rational number?

fgiga [73]

All number except 25

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3 years ago

Classify the expression: 5x + 3x2 − 7x3 + 2.

galina1969 [7]

Answer:

5x-13

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Solve 2x - 3y - 11 3x + 3y - 9 by elimination. Express your answer as an ordered pair.

MaRussiya [10]

Answer:

x= 4, y = -1

Step-by-step explanation:

2x-3y=11

3x+3y=9

do addition and you should get

5x=20

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plug in x into any equation

12+3y=9

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3 years ago

Part A Prove that when x > 1, a triangle with side lengths a = x2 − 1, b = 2x, and c = x2 + 1 is a right triangle. Use the Py

Nataly [62]

Step-by-step explanation:

Given : A triangle with side lengths $a = x^2-1, b = 2x, \text{ and } c = x^2 + 1$

To find : Prove that when x > 1, it is a right triangle. Use the Pythagorean theorem and the given side lengths to create an equation. Use the equation to show that this triangle follows the rule describing right triangles. Explain your steps ?

Solution :

For right triangle the Pythagorean theorem is to be satisfied.

i.e. $c^2=a^2+b^2$

Here, $a = x^2-1, b = 2x, \text{ and } c = x^2 + 1$

Substitute the values,

$(x^2+1)^2=(x^2-1)^2+(2x)^2$

$x^4+1+2x^2=x^4+1-2x^2+4x^2$

$x^4+1+2x^2=x^4+1+2x^2$

LHS=RHS

It is a right triangle.

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3 years ago

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Svetradugi [14.3K]

Which question do you need help with?

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3 years ago