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Marianna [84]
3 years ago
7

The expression 9/5C + 32, where C stands for the temperature in degrees Celsius, is used to convert Celsius to Fahrenheit. If th

e temperature is 20 degrees Celsius, find the temperature in degrees Fahrenheit
Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
3 0
<span>9/5C + 32 =

= 9/5 * 20 + 32

= 36 + 32

= 68

20 C = 68 F
</span>
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15 POINTS
choli [55]

Answer:

The muscular work completed by four men will be 2400 ft. lbs.

Step-by-step explanation:

See the diagram of the ramp.

Four men carry 20 boxes each up a ramp as shown.

So, 4 men carry total (4 × 20) = 80 boxes up the ramp and each box weighs 5 pounds.

Then, the 4 men carry total (80 × 5) = 400 lb weight up the ramp.

Now, the vertical height of the ramp from the ground level is 6 ft.

Hence, the muscular work completed by four men will be (400 × 6) = 2400 ft. lbs. (Answer)

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Less then 10hrs but more then 9hrs not sure exactly
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I need help with this question
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Step-by-step explanation:

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GIVING BRAINLIEST! Please help
MariettaO [177]

Answer:

  the marked answer is correct

Step-by-step explanation:

The desired end result is an identity matrix in the first three columns. The diagonal values are 1, as needed, so what remains is to eliminate the off-diagonal values. In row 2 that can be done by adding row 3 to it.

The next step should be to add rows 2 and 3 and replace row 2 with that sum.

4 0
3 years ago
Assume that adults have IQ scores that are normally distributed with a mean of mu equals μ=105 and a standard deviation sigma eq
Over [174]

The probability that a randomly selected adult has an IQ less than

135 is 0.97725

Step-by-step explanation:

Assume that adults have IQ scores that are normally distributed with a mean of mu equals μ = 105 and a standard deviation sigma equals σ = 15

We need to find the probability that a randomly selected adult has an IQ less than 135

For the probability that X < b;

  • Convert b into a z-score using z = (X - μ)/σ, where μ is the mean and σ is the standard deviation
  • Use the normal distribution table of z to find the area to the left of the z-value ⇒ P(X < b)

∵ z = (X - μ)/σ

∵ μ = 105 , σ = 15 and X = 135

∴ z=\frac{135-105}{15}=2

- Use z-table to find the area corresponding to z-score of 2

∵ The area to the left of z-score of 2 = 0.97725

∴ P(X < 136) = 0.97725

The probability that a randomly selected adult has an IQ less than

135 is 0.97725

Learn more:

You can learn more about probability in brainly.com/question/4625002

#LearnwithBrainly

6 0
2 years ago
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