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3 years ago

11

Please help! and explain the answer please

1 answer:

Bezzdna [24]3 years ago

5 0

Answer:

A)52.3

Step-by-step explanation:

sin30=x/70

x=sin30x70=1/2 * 70=35

sin42=35/y

y=35/sin42 =<u>52.3</u>

hope this helps

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Slav-nsk [51]

Question:

Find numbers a and k so that x-2 is a factor of

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and

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$k = -2$ and $a=1$

Step-by-step explanation:

Given

$f(x)=x^4-2ax^3+ax^2- x+k$

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$f(-1)=3$

Required

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For $f(-1)=3$

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Substitute 3 for f(-1)

$3 = 2 +3a + k$

Collect Like Terms

$3 - 2 = 3a + k$

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Also:

If $x - 2$ is a factor, then

$f(2) = 0$

Substitute 2 for x and 0 for f(x)

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$0 = 16 - 16a + 4a - 2 + k$

$0 = 16 - 12a - 2 + k$

Collect Like Terms

$2 - 16 = - 12a + k$

$-14 = k - 12a$

$k = 12a - 14$

Substitute 12a - 14 for k in $1 = 3a + k$

$1 = 3a + 12a - 14$

$1 = 15a - 14$

Collect Like Terms

$15a = 1 + 14$

$15a = 15$

Solve for a

$a = \frac{15}{15}$

$a=1$

Substitute 1 for a in $k = 12a - 14$

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2 years ago

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2 years ago

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snow_lady [41]

<em>Factors and multiples are related by multiplication.</em>

<h2>Explanation:</h2>

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<em></em>

<em>As you can see, both factors and multiples implies a multiplication. So factors and multiples are related by multiplication.</em>

<h2>Learn more:</h2>

Product of linear factors: brainly.com/question/13882113

#LearnWithBrainly

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