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Norma-Jean [14]
3 years ago
10

Help me pls i dont have long i have 10 mins this is 1 of 2 questions can you pls answer both ill give brainly when 2 answers are

up (NO BOTS OR I WILL REPORT)

Mathematics
2 answers:
astraxan [27]3 years ago
8 0
I’ll help you with your math I am very good at it
Andreas93 [3]3 years ago
6 0
Message me for help! I’m a new toutor that would love to help you!
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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
-1/2 (−4n+6)+3n=47 solve n=?
Sidana [21]

Answer:

N:10

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
WILL MARK BRANLIEST 50 POINTS PLEASE HELP ( CORRECT ANSWER )<br><br> Simplify. 30k2 + 6k 5k + k
Vera_Pavlovna [14]
Simplified answer would be 60k^2+k

and you get that answer by combining like terms, Good Luck! 

8 0
3 years ago
Read 2 more answers
एउटा आयताकार चाउरको परिमिति 1004 m भए सो चउरको
frez [133]

Answer:

502m

Step-by-step explanation:

let x and y represent the length and breadth of rectangular meadow respectively.

Given,

Perimeter of the meadow =1004m

or,2(l+b)=1004m

or2(x+y)=1004m

orx+y=1004m/2

or,x+y=502m

i.e sum of length and breadth

5 0
3 years ago
Which point on the scatter plot is an outlier?
dlinn [17]

Answer:

The point 9,50

Step-by-step explanation:

All the other ones are within a reasonable distance of each other.

7 0
2 years ago
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