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Which is greater bd or ac
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07 Dec 2022, 13:34
07 Dec 2022, 13:34
Expert Reply
00:00
Question Stats:
87% (00:38) correct
12% (01:02) wrong based on 16 sessions
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Quantity A |
Quantity B |
bd |
ac |
A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.
Re: Which is greater bd or ac
[#permalink]
07 Dec 2022, 20:00
07 Dec 2022, 20:00
1
Plot points starting with X and then with Y i.e. you need to move side to side before you can move up or down. My 4th grade teacher used the analogy "you have to run before you can jump/dive"
A is negative
B is positive
C is negative
D is negative
B*D = negative
A*C = positive (two negatives multiplied always equals a positive)
QB is larger
A is negative
B is positive
C is negative
D is negative
B*D = negative
A*C = positive (two negatives multiplied always equals a positive)
QB is larger
Re: Which is greater bd or ac
[#permalink]
11 Dec 2022, 03:00
11 Dec 2022, 03:00
Expert Reply
OE
Point (a, b) is in the second quadrant where points have signs of (–, +); thus, a is negative and b is positive. Point (c, d) is in the third quadrant where points have signs of (–, –); thus, c is negative and d is negative. So, Quantity A is a positive times a negative, which is negative. Quantity B is a negative times a negative, which is positive. Quantity B must be greater.
Point (a, b) is in the second quadrant where points have signs of (–, +); thus, a is negative and b is positive. Point (c, d) is in the third quadrant where points have signs of (–, –); thus, c is negative and d is negative. So, Quantity A is a positive times a negative, which is negative. Quantity B is a negative times a negative, which is positive. Quantity B must be greater.
