42/12 = 3.5, 63/18 = 3.5, therefore we will be multiplying the last time by 3.5. 40x3.5= 140, and therefore, the number of pencils produced in 40 seconds is 140

7 0

3 years ago

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The base of a rectangular tank measures 50 cm by 40 cm. What will the height of the water level be when it contains 9 liters of

uranmaximum [27]

Answer:

height = 4.5 cm

Step-by-step explanation:

9 liters = 9000 cm^3

(50x40xH) = 9000

H = 4.5 cm

6 0

3 years ago

The area of a triangle is 6,384cm ^ 2. Its base measures 93cm; How much is it's height?

Citrus2011 [14]

the height is 137.29

6 0

3 years ago