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LekaFEV [45]
2 years ago
7

A rock sinks 160 feet in 20 seconds. Find the average rate of change per second.

Mathematics
1 answer:
liberstina [14]2 years ago
5 0
We need to find how many feet a rock sinks per second. assuming the rock falls at a constant rate we can divide each number by 20 to get 8 feet per second.

to check our worker can multiply our feet by 20, in which we get 160.
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Please guys I am begging you to help me! This was due yesterday and I need help! SO please help!
jeka57 [31]

Answer:

  • Q3. 12 units
  • Q4. 6.33 units
  • Q5. 66.19°

Step-by-step explanation:

Q3

DE and DF are legs and EF is hypotenuse

  • DE = √EF² - DF²
  • DE = √13² - 5² = √169 - 25 = √ 144 = 12
  • DE = 12 units

Q4

PR is opposite side of angle Q and RQ is adjacent side

  • tan 54 = PR/RQ
  • tan 54 = PR / 4.6
  • PR = 4.6tan 54
  • PR = 6.33 units

Q5

As previous question, using tan as BC is opposite and AC is adjacent leg of angle A

  • tan A = 6.8/3
  • tan A = 2.266
  • A = arctan (2.266)
  • A = 66.19°
8 0
3 years ago
The word "OF" also helps us to identify what in a percent equation
Stells [14]

Answer

Of is Multiplication I believe

Step-by-step explanation:

Of is multiplication

3 0
2 years ago
•The following system of functions are shown on the graph:
Setler79 [48]

Answer:

Neither

Step-by-step explanation:

knowing that the system are y=-x+6 and y=x+2, then: x+2=-x+6; x+x=6-2; 2x=4; x=2, and replacing x in y we have: y=-2+6=4 and y=2+2=4, finally tha solution to sistem is (2,4)

7 0
3 years ago
Pls help me guys, I’d really appreciate it
trapecia [35]

Answer:

∠ PQR = 70°

Step-by-step explanation:

The tangent- tangent angle PQR is half the difference of the intercepted arcs.

minor arc PR = 360° - 250° = 110°

Then

∠ PQR = \frac{1}{2} (250 - 110)° = \frac{1}{2} × 140° = 70°

8 0
2 years ago
What is the correct way to divide 1.6/6.4
Alex777 [14]
You would do 6.4/1.6 because big should come first or the number will change
8 0
2 years ago
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