Cumulative Exam — Cumulative exam

Question 1

Error

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/evresources/eaacdf6af0329fb82721e4c3bfea8e9b.png

Question 2

Let r = ⟨5, –1⟩, s = ⟨6, 0⟩, and t = ⟨–1, –3⟩. Aaron incorrectly determined 2r + 4s – 7t as ⟨41, –23⟩. Review his calculations.2r + 4s – 7t2⟨5, –1⟩ + 4⟨6, 0⟩ – 7⟨–1, –3⟩⟨10, –2⟩ + ⟨24, 0⟩ + ⟨7, –21⟩⟨41, –23⟩

Revolt · Accepted Answer

He did not correctly distribute the negative when subtracting 7t.

Question 3

A circle is shown. Secants E G and D G intersect at point G outside of the circle. Secant E G intersects the circle at point F and secant D G intersects the circle at point H. The length of E F is x, the length of F G is 6, the length of D H is x + 3, and the length of H G is 5.

Revolt · Accepted Answer

12 units

Question 4

In triangle MNP, and units. What is the approximate length of PN?

Revolt · Accepted Answer

6.5 units

Question 5

Sheila is building a triangular sandbox in her backyard. She has obtained the measurements in the diagram below. The angle is measured in degrees. [Not drawn to scale]What is the unknown side length (x)? Round the answer to the nearest tenth.

Revolt · Accepted Answer

6.4 ft

Question 6

If and , what is X when ?

Revolt · Accepted Answer

mc006-5.jpg

Question 7

Given vectors u = ⟨–5, 1⟩ and v = ⟨8, 6⟩, which statement is true for u and v?

Revolt · Accepted Answer

The vectors form an obtuse angle.

Question 8

What are the values of x and y in the matrix subtraction below?

Revolt · Accepted Answer

mc007-2.jpg

Question 9

Review the diagram of a locket in the shape of an ellipse. The major and minor axes are labeled in the diagram.

Revolt · Accepted Answer

StartFraction y squared Over 361 EndFraction + StartFraction x squared Over 169 EndFraction = 1

Question 10

Given u = and v = ⟨3, –4⟩, what is u · v?

Revolt · Accepted Answer

3 StartRoot 3 EndRoot + 4

Cumulative Exam — Cumulative exam Answers

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