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3 years ago

There are 12 people having lunch.Each person wants 1/3 of a sub sandwich.How many whole sub sandwiches are needed?

1 answer:

6 0

Each sub will feed 3 people if they split it by 1/3
take 12 and divide by 3
12/3= 4
they'll need 4 whole subs to feed 12 people

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Evaluate 3x + 1/3 if x =1/4? simplify if possible

sammy [17]

Answer:

Exact Form:

13/12

Decimal Form:

1.083

Mixed Number Form:

1 1/12

Step-by-step explanation:

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3 years ago

MariettaO [177]

Answer:

0.7969

Step-by-step explanation:

Given that: A sample of size n= 49 is obtained. The population mean is m= 80 and the population standard deviation is s = 14.

The z score measures the number of standard deviation by which the raw sore is above or below the mean. It is given by the equation:

$z=\frac{x-m}{\frac{s}{\sqrt{n} } }$

For x = 78.3, the z score is:

$z=\frac{x-m}{\frac{s}{\sqrt{n} } }=\frac{78.3-80}{\frac{14}{\sqrt{49} } } =-0.85$

For x = 85.1, the z score is:

$z=\frac{x-m}{\frac{s}{\sqrt{n} } }=\frac{85.1-80}{\frac{14}{\sqrt{49} } } =2.55$

P(78.3<x<85.1) = P(-0.85<z<2.55) = P(z<2.55) - P(z<-0.85) = 0.9946 - 0.1977 = 0.7969

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jenyasd209 [6]

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4 years ago

How many quarts are equal to 8 cups.(1 quart=2 pints.1 pint=2 cups.)

PSYCHO15rus [73]

1 quarts is 2 pints and 1 pint is 2 cups so if you add it up that means 8 cups is 4 pints and 4 pints is 2 quarts so your answr is 2 quarts

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4 years ago

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What is the solution to8(5-r)/5=-2r

Dmitry [639]

Expand 8(5-r)/5=-2r as indicated: 40 - 8r

----------- = - 2r

Multiply both sides by 5, obtaining 40 - 8r = - 10r

Combine like terms: 40 = - 2r

Divide both sides by -2: -20 = r

The solution to 8(5-r)/5=-2r is -20. Verify this by subbing -20 for r in the given equation.

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3 years ago

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