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defon
2 years ago
5

To pass science, a student must earn at least a grade of 70. How many students failed this science class? A histogram titled Sci

ence Grades has grades on the x-axis and number of students on the y-axis. 2 students received a score of 50 to 59; 5 students received a score of 60 to 69; 8 students received a score of 70 to 79; 5 students received a score of 80 to 89; 2 students received a score of 90 to 100.
Mathematics
1 answer:
Rashid [163]2 years ago
4 0

Answer:

7 students

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Find the equation of the line that contains the points P1(-4,8) and P2(-6,8)...
olga_2 [115]
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3 years ago
The difference between the roots of the quadratic equation x2 -14x +q =0 is 6. Find q
Irina-Kira [14]

9514 1404 393

Answer:

  q = 40

Step-by-step explanation:

When the quadratic has roots p and r, it can be factored as ...

  (x -p)(x -r) = x² -(p+r)x +pr

So, the sum of the roots is 14, and their difference is 6. This lets us find the roots from ...

  p + r = 14

  p - r = 6

  2p = 20 . . . add the two equations

  p = 10

  r = 14 -p = 4

The value of interest is then ...

  q = pr = (10)(4)

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The graph shows the roots to be 4 and 10, as we found.

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3 years ago
A parachutist's rate during a free fall reaches 45 meters per second. What is this rate in feet per second? At this rate, how ma
Alina [70]
198 feet..........1 meter 
<span>------------- X-------------- </span>
<span>1 second.......3.3 feet </span>

<span>198 </span>
<span>----- meters per second </span>
<span>3.3 </span>

<span>60 meters per second.......ANSWER </span>

<span>60 m/sec X 15 sec = 900 feet.......ANSWER </span>

<span>If you have questions on this or any other math problem feel free </span>
<span>to let me know how to contact you.......Read Below....... </span>

<span>I tutor free online since moving to France from Florida in June 2011. </span>
<span>I still tutor by skype to students in Florida and starting to gain more world-wide. </span>
<span>Hope this is most helpful and you will continue to allow me to tutor you. </span>
<span>If you dont fully understand or have a question PLEASE let me know </span>
<span>how to contact you so you can then contact me directly with any math questions. </span>
<span>If you need me for future tutoring I am not allowed to give out my </span>
<span>info but what you tell me on ***how to contact you*** is up to you </span>
<span>Been a pleasure to serve you Please call again </span>
<span>Robert Jones.............f </span>
<span>"Teacher/Tutor of Fine Students" </span>
<span>A PRESENT FOR YOU </span>
<span>Ask someone to write a number, say a five-digit number. </span>
<span>(Can be a 2-digit.....3-digit.....4-digit....ect..... </span>
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