Find the difference -2(c + 2.5) - 5(1.2c + 4)
1 answer:
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Answer:
Step-by-step explanation:
Given
Variation: Inversely
when
Required
Determine p when
First, we need to determine the relationship between p and q
Since, it is an inverse variation.
The relationship is:
Convert to an equation
Where k = constant of variation
Make k the subject
When and
To solve for p when q = 135
Substitute 135 for q and 540 for k in
Since A and B are the midpoints of ML and NP, we can say that AB is parallel to MN and LP. In order to find ∠PQN, we can work with the triangles PQB and NQB. According to SAS (Side-Angle-Side) principle, these triangles are congruent. BQ is a common side for these triangles and NB=BP and the angle between those sides is 90°, i.e, ∠NBQ=∠PBQ=90°. After finding that these triangles are equal, we can say that ∠BNQ is 45°. From here, we easily find <span>∠PQN. It is 180 - (</span>∠QNP + ∠NPQ) = 180 - 90 = 90°
