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Debora [2.8K]
2 years ago
14

20 points if you can solve all

Mathematics
1 answer:
Damm [24]2 years ago
5 0

Answer:

  1. 5
  2. 13
  3. 2
  4. 11
  5. 7
  6. 4
  7. 3
  8. 14
  9. 10
  10. 175

Step-by-step explanation:

  1. |6| = 6 means “the absolute value of 6 is 6.”
  2. |–6| = 6 means “the absolute value of –6 is 6.”

Brainlist Pls!

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Find II 2e-3f II^2 assuming that e & f are unit vectors such that II e +f II=sqrt(3/2).
sergey [27]

<span>We are given that ||e|| = 1, ||f|| = 1. </span>

<span>Since ||e + f|| = sqrt(3/2), we have </span>
<span>3/2 = (e + f) dot (e + f) </span>
<span>= (e dot e) + 2(e dot f) + (f dot f) </span>
<span>= ||e||^2 + 2(e dot f) + ||f||^2 </span>
<span>= 1^2 + 2(e dot f) + 1^2 </span>
<span>= 2 + 2(e dot f). </span>

<span>So e dot f = -1/4. </span>

<span>Therefore, </span>
<span>||2e - 3f||^2 = (2e - 3f) dot (2e - 3f) </span>
<span>= 4(e dot e) - 12(e dot f) + 9(f dot f) </span>
<span>= 4||e||^2 - 12(e dot f) + 9||f||^2 </span>
<span>= 4(1)^2 - 12(-1/4) + 9(1)^2 </span>
<span>= 4 + 3 + 9 </span>
<span>= 16. </span>
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3 years ago
Mrs. Jones decided to buy some pencils for her class. She bought 5 packages of pencils, and each package contained 42 pencils. T
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Each student would get 15pencils
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5601 in scientific notation
Anna007 [38]
5.601 x 10^3

Hope that helped!
8 0
3 years ago
I NEEDDD HELPPPP PLEASE ILL GIVE U BRAINLEST
zepelin [54]
-2/1 I did this is math class , we’re on this unit to,





Explanation
Saying it’s a negative number because it is pointing in a left word position, you have to go down twice and over once to find the exact point where the line crosses over a point on the graph, and there you will get -2/1
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Read 2 more answers
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The value x is for the bottom of the triangle.
Simplified, it would be 6x + 20
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3 years ago
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