Given: −3(a–b)>0, which is the greater: a or b? Give numerical examples.

Mathematics

2 answers:

Alex777 [14]2 years ago

7 0

Answer:

-3(a-b) < 0. divide both sides by -3 and reverse the inequality sign: 0 0

Step-by-step explanation:

Jet001 [13]2 years ago

6 0

Answer:

b is greater than a.

Step-by-step explanation:

−3(a–b) > 0

a - b < 0 - The sign is flipped because we are dividing by a negative.

Checking with some values of a and b:

Let a = 4 and b = 2:

-3( 4 - 2) = -6 which is not > 0.

a = 3, b = 3

-3(3-3) = 0 ( not greater)

a = 2 b = 3

-3(2 - 3) = - * - 1 = 3 which is greater than 0.

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3 years ago

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miss Akunina [59]

Answer:

A) 60 Degrees

B) 550 Feet

C) 2.5 minutes

Step-by-step explanation:

a) So the wheel has completed one revolution in 10 minutes so lets first divide 100 secs with 10 minutes to calculate the the fraction of revolution

1 min = 60 secs

10 min = 600 secs

100/600 = 1/6

One complete revolution is 360 degrees and 1/6 of 360 degrees will be 60 degrees .

360/6 = 60°

b) It takes 10 minutes to complete one revolution so if the person is on it for 7 minutes it would be 7/10 of a revolution . The ferris wheel has a diameter of 250 feet so the radius will be 125 feet because it is the half of the diameter and the circumference will be 250 π . To calculate the distance lets multiple the fraction of the revolution which is 7/10 into the circumference $\frac{7}{10} * (250 pi)$ = 550 Feet.