2 years ago

Pleasee, whats the substitution of 9x+2y=-3 and -9x-y=-3

Mathematics

1 answer:

Lubov Fominskaja [6]2 years ago

4 0

Answer: (1,-6)

Step-by-step explanation:

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mojhsa [17]

Answer:

The answer is B.

Step-by-step explanation:

You have to use Pythogorean Theorem, c² = a² + b² where c is the hypotenuse and a,b is the side lengths :

${c}^{2} = {a}^{2} + {b}^{2}$

Let a = 40,

Let b = 9,

${c}^{2} = {40}^{2} + {9}^{2}$

${c}^{2} = 1600 + 81$

${c}^{2} = 1681$

$c = \sqrt{1681}$

$c = 41 \: units$

*Take note, hypotenuse will always be the longest length among the 3 lengths.

*Pythogorean Theorem can only applied in a right-angle triangle.

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Answer:

A

Step-by-step explanation:

Given

x² = 9/4

Solving

Take the square root on both sides
√x² = √9/4
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Option A is the correct option.

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2 years ago

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The table shows the number of students in a school who like rap and/or hip-hop: Like Rap Do Not Like Rap Total Like Hip-Hop 35 8

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Step-by-step explanation:

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Step-by-step explanation:

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