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katen-ka-za [31]
4 years ago
8

Please help and explain!!!!!!!!!!!

Mathematics
2 answers:
murzikaleks [220]4 years ago
4 0
<span>a=9.3</span> units

Explanation:

Use pythagorean theorem,

<span><span>c2</span>=<span>b2</span>+<span>a2</span></span>

Rearrange,

<span>a=<span>√<span><span>c2</span>−<span>b2</span></span></span></span>

Sub in and solve,

<span>a=<span>√<span><span><span>(12.6)</span>2</span>−<span><span>(8.5)</span>2</span></span></span></span>

<span>a=9.30</span> units



hope i helped -beanz:)


Rainbow [258]4 years ago
4 0
A= √c^2-b^2
a= √12.6^2-8.5^2
a=√158.76-72.25
a=√86.51
a= 9.301

Letter a is the correct answer.
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Simplify the expression 5+6i/4+6i<br> A) 56-6i/-20<br> B) -16-6i/-20<br> C)56-6i/52<br> D) -16-6i/52
IRISSAK [1]

Answer:

The\ simplified\ form\ of\ the\ \frac{5 + 6i}{4 + 6i}\ is\ \frac{56-6i}{52}.

Option (C) is correct .

Step-by-step explanation:

As the expression given in the question as follows.

= \frac{5 + 6i}{4 + 6i}

Now rationalize the expression.

= \frac{5 + 6i\times 4 - 6i}{4 + 6i\times 4 - 6i}

Using the formula

a² - b² = (a - b) (a + b)

Using in the above

= \frac{5 + 6i\times 4 - 6i}{(4)^{2} - (6i)^{2}}

= \frac{5\times 4-5\times 6i+6i\times 4-36\ i^{2}}{16 - 36(i)^{2}}

As i² = -1

= \frac{20-30i+24i+36}{16 + 36}

= \frac{56-6i}{52}

Therefore\ the\ simplified\ form\ of\ the\ \frac{5 + 6i}{4 + 6i}\ is\ \frac{56-6i}{52}.

Option (C) is correct .

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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To get your answer, you will need to find the perpendicular slope for -1/3x which is just the opposite therefore it will be 3x. Your slope is 3x as perpendicular so use this slope to do point slope. Y-1=3(x-2). Distribute y-1=3x-6. Add 1 to both sides. (-1+1) (-6+1)=-5. So your equation in slope intercept form is y=3x-5. Going through the two points.

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