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IgorLugansk [536]
4 years ago
12

jamal's scores on the first three of four 100-point English papers were 86, 92, and 89. what score does he need on his fourth pa

per to ensure an average score of at least 90?
Mathematics
1 answer:
Scilla [17]4 years ago
6 0
He needs to get a score of at least 93.
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. Complete the missing steps in the paragraph proof of Theorem 3-8.
Crank
To solve for the missing steps, let's rewrite first the problem.

Given:

In a plane, line m is perpendicular to line t or  m⟂t
                  line n is perpendicular to line t  or  n⟂t


Required:

Prove that line m and n are parallel lines


Solution:

We know that line t is the transversal of the lines m and n.

With reference to the figure above, 

∠ 2 and ∠ 6 are right angles by definition of <u>perpendicular lines</u>. This states that if two lines are perpendicular with each other, they intersect at right angles.

So ∠ 2 ≅ ∠ 6. Since <u>corresponding</u> angles are congruent. 

Therefore, line m and line n are parallel lines.
<span>
<em>ANSWERS: perpendicular lines, corresponding</em>

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Answer:

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How do you know if the question is asking for you to do Pythagoras or Trigonometry? Like in basic terms, what’s the difference??
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Pythagoras theorem only works for right triangle (90 degree)

Trigonometry (sin, cos, tan) works everywhere!

Hopefully I answered your question!

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