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yKpoI14uk [10]
3 years ago
6

Bus A and Bus B leave the bus depot at 8 am. Bus A takes 25 minutes to do its route and bus B takes 35 minutes to complete its r

oute. At what time are they both back at the bus depot together? Give your answer as a 12-hour clock tim
Mathematics
1 answer:
Dafna1 [17]3 years ago
3 0

bus a: 25 + 25= 50 minutes x 12 = 6:00

bus b: 35 +35= 70 minutes x 12 = 8:40

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An oil tank has to be drained for maintenance. The tank is shaped like a cylinder that is 3ft long with a diameter of 2.2 ft . S
Contact [7]

4 minutes 34 seconds will takes to empty the tank, if the starts completely full and oil drained at a rate of 2.5 ft^{3} per minute.

Step-by-step explanation:

              The given is,

                         Tank is shaped like a cylinder that is 3 ft long with a diameter of 2.2 ft.

                          Oil drained at a rate of 2.5 ft^{3} per minute.

Step:1

       Time taken to dry the oil tank is,

                           T   = \frac{Volume of oil}{Oil drain rate}  ....................................(1)

Step:2

      Volume of the oil is,

                           V = \pi  r^{2} h.................................................(2)

      Where, r - Radius of Cylinder

                             r = \frac{d}{2}

                             r = \frac{2.2}{2}

                             r = 1.1 ft

      From eqn (1),

                        V =  \pi × 1.1^{2} × 3

                           = 11.40398 ft^{3}

Step:3

     From equation (1)

                           = \frac{11.40398}{2.5}

                           = 4.56

                           = 4.56 minutes

                      T  = 4 minutes 34 seconds

Result:

      Time taken to dry the oil tank is 4 minutes 34 seconds, if a cylinder is 3 ft long with a diameter of 2.2 ft and oil is drained at a rate of 2.5ft^3 per minute.

4 0
3 years ago
Select the point that is a solution to the system of inequalities. Yx^2-4?
ziro4ka [17]

Answer:

C (1,2)

Step-by-step explanation:

The point that is a solution must satisfy both inequalities;

The inequalities are;

y\:

y\:>\:x^2-4

Point A

(4,0)

0\:: True

0\:>\:16-4:False

Point B (0,4)

4\:: False

4\:>\:0-4:True

Point C (1,2)

2\:: True

2\:>\:1-4:True

Point D(-2,-4)

-4\:: True

-4\:>\:4-4:False

The correct answer is C.

4 0
3 years ago
Three tables are placed side by side. One table is 4 feet 6 inches wide, another is 3 feet 9 inches wide, and the third is 4 fee
sdas [7]
4 ft    6 in
3 ft   9 in
4 ft  11 in
-------------add
11 ft  26 in

there are 12 inches in 1 ft.....so 26 inches = (26/12) = 2 ft 2 inches

11 ft + 2 ft 2 in = 13 ft 2 in <===
3 0
3 years ago
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