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Setler79 [48]
3 years ago
8

Connor believed that he did not do well in his ABC physics test. All ABC physics test scores are normally distributed with a mea

n of 20 and standard deviation of 8. A student gets an F grade if he or she scores less than 5. If Connor is at the 20th percentile, does he pass the test?
Mathematics
1 answer:
jenyasd209 [6]3 years ago
8 0

Answer:

Yes! he passed

Step-by-step explanation:

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Solve the system by substitution. 2x - y = -3, 2x-2y = -2
Sonja [21]

Answer:// Solve equation [1] for the variable  y

 [1]    y = 2x - 3

// Plug this in for variable  y  in equation [2]

  [2]    -2•(2x-3) + 2x = 2

  [2]     - 2x = -4

// Solve equation [2] for the variable  x

  [2]    2x = 4

  [2]    x = 2

// By now we know this much :// Solve equation [1] for the variable  y

 [1]    y = 2x - 3

// Plug this in for variable  y  in equation [2]

  [2]    -2•(2x-3) + 2x = 2

  [2]     - 2x = -4

// Solve equation [2] for the variable  x

  [2]    2x = 4

  [2]    x = 2

// By now we know this much :

   y = 2x-3

   x = 2

// Use the  x  value to solve for  y

   y = 2(2)-3 = 1

   y = 2x-3

   x = 2

// Use the  x  value to solve for  y

   y = 2(2)-3 = 1

Step-by-step explanation:

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3 years ago
Help pls im to stupit ;(
Mrac [35]

Answer:

48.25

Step-by-step explanation:

ITS EDITED BTW

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snow_tiger [21]
The answer in a fraction format is 2/9 or decimal format will be 0.222222222
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A rope is tied to the bottom of a hot air balloon as shown below. The rope makes an angle of 35 degrees with the ground distant
Serjik [45]
We have a right triangle. We know the hypotenuse (75 ft) and an angle of 35°. We need to find the opposite leg to the angle of 35° (h). The trigonometric function that relates the opposite leg to an angle with the hypotenuse is sine:
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Solving for h:
(75 ft) sin 35°=h
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Answer: T<span>he bottom of the balloon is 43 ft from the ground</span>
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3 years ago
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