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7nadin3 [17]
2 years ago
15

Please help will give brainliest

Mathematics
1 answer:
poizon [28]2 years ago
7 0

Answer:

2.-4.00

Step-by-step explanation:

3.-4

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Answer:

a.x=10 \textdegree

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m\angle L=39\textdegree\\\\m\angle M=51\textdegree\\\\m\angle K=90\textdegree

Step-by-step explanation:

a. We know that angles in a triangle add up to 180°.

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We can therefore equate our angles to 180° and solve for x;

180=\perp\angle+(2x+19)+(3x+21)\\\\180=90+(2x+19)+(3x+21)\\\\90=5x+40\\\\5x=50\\\\x=10\textdegree

Hence, the angle measure is x=10°

b. Having calculated the value of x from a above as x=10°, we can substitute to find the measures of the two acute angles:

m\angle L=(2x+19)\textdegree\\\\=(2\times 10+19)\textdegree\\\\=39\textdegree\\\\m\angle M=(3x+21)\textdegree\\\\=(3\times 10+21)\textdegree\\\\=51\textdegree

Since, the m∠K is a right angle, it measures 90°

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Step-by-step explanation:

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Let y be f(x).

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Hence f^-1(x) = √(x - 1), where x >= 1.

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