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Korolek [52]
3 years ago
7

Archimedes drained the water in his tub.

Mathematics
1 answer:
frosja888 [35]3 years ago
5 0

Answer:

  a)  1/4 minute

Step-by-step explanation:

You can find the time using a proportion. It took 5 minutes to drain the entire 360 liters, so we can write the proportion as ...

  time/volume = (5 min)/(360 L) = t/(18 L)

Multiplying by 18 L gives ...

  t = (18/360)(5 min) = (5/20) min = 1/4 min

It took 1/4 minute to drain each 18 liters.

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What type of rational number is 7 2/0
trapecia [35]

Anything with a zero denominator is undefined.

5 0
3 years ago
Kevin is making a banner with area of 7 square ft width and length of banner is whole numbers what numbers are possible dimensio
stepladder [879]

Answer:

Length = 7, width = 1.

Step-by-step explanation:

7 and 1 are the only possible dimensions as 7 is a prime number.

3 0
3 years ago
First rewrite 8/25 and 7/20 so that they have a common denominator
Pie

Answer:

  • 8/25 = 32/100
  • 7/20 = 35/100

Step-by-step explanation:

25 and 20 have a least common multiple of 100, so that is your least common denominator.

  8/25 = (8·4)/(25·4) = 32/100

  7/20 = (7·5)/(20·5) = 35/100

6 0
3 years ago
0.3% of a country has a certain disease. The test for the disease has a sensitivity of 92% (i.e., of those we know have the dise
butalik [34]

Answer:

0.95988 (Accuracy of the test )

Step-by-step explanation:

To determine the accuracy of this test we have to list out the given values

Prevalence rate of the disease = 0.3% = 0.003

sensitivity rate of the disease = 92% = 0.92

specificity rate for the test = 96% = 0.96

The accuracy of the test can be found using this equation

Accuracy = sensitivity * prevalence + specificity ( 1 - prevalence )

                = 0.92 * 0.003 + 0.96 ( 1 - 0.003 )

                = 0.00276 + 0.95712

                = 0.95988

6 0
3 years ago
20. What is the value of y in the algebraic
Dennis_Churaev [7]

Answer: 17/7

Step-by-step explanation: Step 1: Simplify both sides of the equation. y+4/15 + 2y−5/5 = 2/5 1/15 y+ 4/15 + 2/5 y+−1= 2/5 (Distribute) ( 1/15 y+ 2/5 y)+( 4/15 +−1)= 2/5 (Combine Like Terms) 7/15 y+ −11/15 = 2/5 7/15 y+ −11/15 = 2/5 Step 2: Add 11/15 to both sides. 7/15 y+ −11/15 + 11/15 = 2/5 + 11/15 7 15 y= 17/15

7 0
3 years ago
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