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EST I| Math | October 2020 | Section 1 — Preview 0 / 5 answered
1
Intermediate 1
1-Isolate r.
A
A. $r = \frac{4\pi\epsilon_0 f}{q_1q_2}$
B
B. $r = \sqrt{\frac{q_1q_2 f}{4\pi\epsilon_0}}$
C
C. $r = \frac{1}{2}\frac{q_1q_2}{\pi\epsilon_0 f}$
D
D.$ r = \left(\frac{q_1q_2}{4\pi\epsilon_0}\right)^2$
2
Intermediate 3
3-What is the value of k?
A
A. $\frac{2}{3}$
B
B. $\frac{3}{2}$
C
C. $\frac{2}{5}$
D
D. $\frac{5}{3}$
3
Intermediate 4
4-In the xy-plane, the equation of the line (d) passing through A (1;3) and perpendicular to line 3x-2y = 6 is:
A
A. $y = \frac{3}{2}x - \frac{7}{2}$
B
B.$ y = -\frac{3}{2}x + \frac{11}{2}$
C
C. $y = -\frac{2}{3}x + 3$
D
D. $y = -\frac{2}{3}x + \frac{11}{3}$
4
Intermediate 5
5-Jack and John are meeting at a restaurant. The scheme above represents the drives from their offices to the restaurant. Which of the following statements is true?
A
A. It took Jack longer to arrive to the pub since his office is farther away.
B
B. It took John longer to arrive to the pub since his office is farther away.
C
C. John drove to the pub at a faster speed than Jack.
D
D. Jack drove to the pub at a faster speed than John.
5
Intermediate 6
6-Which value of x makes the equation \frac{6}{5}(3x - 2) = 14 true?
A
A. 2
B
B. 3
C
C. 4
D
D. 5
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