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andrew-mc [135]
3 years ago
11

A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 49.0 and 54.

0 minutes. Find the probability that a given class period runs between 50.75 and 51.75 minutes.
Find the probability of selecting a class that runs between and minutes.
Mathematics
1 answer:
Pie3 years ago
8 0

Answer:

0.2

Step-by-step explanation:

Write a proportion.

(54.0 − 49.0) / 1 = (51.75 − 50.75) / x

5 = 1 / x

x = 0.2

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Find the solution set. |x| = -4 A. { } B. {-2, 2} C. {-4, 4} D. {-16, 16}
Ray Of Light [21]

Answer:

A. { }

Step-by-step explanation:

Absolute value cannot be less than zero.

-4 < 0

There is no solution for x, ∈, R.  

Hope this helps.

6 0
3 years ago
Olivia is making bead bracelets for her friends. She can make 3 bracelets in 15 minutes.Now find the constant of proportionality
harkovskaia [24]

Answer:

so, 15 divided by 3 is 5. so the constant of proportionality is 5. and 60 seconds for the minute, divided by 5 is................12.

if this is wrong im sorry. Hope i helped!

3 0
3 years ago
NEEED HELPPP !!!!!!!!!!
serious [3.7K]

Answer:

X + 7 + 2x + 19 = 35

Add like terms

3x + 26 = 35

-26          -26

3x = 9

/3   /3

X = 3

3 0
3 years ago
Could someone help me on this
allochka39001 [22]

Answer:

13.) 314.2 in²

15.) 181.5 ft²

Step-by-step explanation:

The area of a circle is found using the equation:

A = πr²

In this equation, "π" represents the number pi (3.14....) and "r" represents the radius (half the diameter).

For 13.), you have been given the radius. Thus, you can substitute it into the equation and solve for "A".

A = πr²

A = π(10)²

A = π x (100)

A = 314.2 in²

For 15.), you have been given the diameter. To find the radius, you need to divide this value by 2. Once you find the radius, you can plug it into the equation and simplify like above.

diameter = 15.2 ft
radius = 7.6 ft

A = πr²

A = π(7.6)²

A = π x (57.76)

A = 181.5 ft²

8 0
2 years ago
Solve for x.<br><br> x+3.2=−3.5<br><br> (Any help at all is greatly appreciated!)
Maksim231197 [3]
You have to subtract 3.2 from 3.5 to get x. 0.3+ 3.2=2.5 so x=0.3
7 0
3 years ago
Read 2 more answers
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