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rusak2 [61]
3 years ago
5

Estimate each quotient 165 divided by 4

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
6 0

As a ballpark estimate, I would say around 40. I hope this helps!

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Two children own two-way radios that have a maximum range of 3 miles. One leaves a certain point at 1:00 P.M., walking due north
Grace [21]

Answer:

The answer is 21 minutes

Step-by-step explanation:

We use the equation Xf = Xo + vt

1) At 1:00 PM, child one leaves the starting point heading north at a constant velocity of 6 mi/hr or .1 [mi/min] (divide by 60 to convert from [mi/hr] to [mi/min])

2) He walks for 15 minutes before kid 2 starts walking. In 15 minutes he is able to cover 1.5 [mi]

  • x_{1f1} =x_{o} +v_{1} t_{1} \\x_{1f1} =0+.1(15)\\x_{1f1} =1.5 [mi]

3) Now, child 2 starts walking and we know that when the range reaches 3 miles, they won´t be able to communicate. So the sum of the final position of child 1 and child 2 must be 3[mi]

  • Child 1 final position => x_{1f} = x_{1f1} +v_{1} t\\x_{1f} =1.5+v_{1} t
  • Child 2 final position => x_{2f} =0+v_{2} t

4) Sum the equations and equate to 3

  • x_{1f} +x_{2f} =3

5) Substitute the values we already know

  • 1.5+v_{1} t+v_{2}t=3\\ 1.5+.1t+.15t=3\\1.5+.25t=3\\t=\frac{3-1.5}{.25} \\t=6 [min]

6) in 15 + 6 minutes they will be 3miles apart

7) In 21 minutes they will still be able to communicate with one another.

7 0
3 years ago
6. Solve each equation and check your solution. 3x - 6 = 4(2 - 3x) - 8x
Advocard [28]

Answer:

Multiple answers (Work & answers below)

Step-by-step explanation:

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3 years ago
What percent of 25 is 30
Thepotemich [5.8K]
0.833333333% is the answer
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Can you solve what is 5 x 1 2/3
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I believe the answer is 20 sorry
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Can someone awnser this
Ostrovityanka [42]
It has a constant daily growth rate of 1.5
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