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2 years ago

I need help!!! I have no idea what the answer is Please help!

Mathematics

2 answers:

Aloiza [94]2 years ago

7 0

Answer:

k=3

Step-by-step explanation:

k-4/3=3

4-3=1

k/1=3

k=3

sorry if this does not make sense.

Archy [21]2 years ago

4 0

Answer:

Multiply both side by 3

$( \frac{k - 4}{3} = 3) \times 3 \\ k - 4 = 9 \\ \therefore \: k = 13$

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A right-angled triangle has shorter side lengths exactly c^2-b^2 and 2bc units respectively, where b and c are positive real num

yKpoI14uk [10]

Answer: hypotenuse = $c^{2} + b^{2}$

Step-by-step explanation: Pythagorean theorem states that square of hypotenuse (h) equals the sum of squares of each side ( $s_{1},s_{2}$ ) of the right triangle, .i.e.:

$h^{2} = s_{1}^{2} + s_{2}^{2}$

In this question:

$s_{1}$ = $c^{2}-b^{2}$

$s_{2} =$ 2bc

Substituing and taking square root to find hypotenuse:

$h=\sqrt{(c^{2}-b^{2})^{2}+(2bc)^{2}}$

Calculating:

$h=\sqrt{c^{4}+b^{4}-2b^{2}c^{2}+(4b^{2}c^{2})}$

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$c^{4}+b^{4}+2b^{2}c^{2}$ = $(c^{2}+b^{2})^{2}$ , then:

$h=\sqrt{(c^{2}+b^{2})^{2}}$

$h=(c^{2}+b^{2})$

Hypotenuse for the right-angled triangle is $h=(c^{2}+b^{2})$ units

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3 years ago

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SIZIF [17.4K]

Answer:

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Step-by-step explanation:

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3 years ago

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Vladimir [108]

Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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<em /><em>Explanation:
</em>
The square root needs to be a number that can be multiplied by itself and equal the original number.

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However, you are looking for the square root of a negative number, due to this you would add i to the answer,
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( Depending on your grade/ teacher however, you can put "no solution"

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2 years ago