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Svet_ta [14]
3 years ago
13

Help me

Mathematics
1 answer:
Burka [1]3 years ago
8 0
What links r u talking abt
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PLEASE SOVEL THIS I WILL GIVE OUT 20 POINT
Anettt [7]

9514 1404 393

Answer:

  21.25 seconds

Step-by-step explanation:

In miles per second, the speed of the jet is ...

  (720 mi/h)/(3600 s/h) = 1/5 mi/s

The speed of the sound is the same:

  (1 mi)/(5 s) = 1/5 mi/s

Then the rate of closure between the airplane and the sound is ...

  (1/5 mi/s) +(1/5 mi/s) = 2/5 mi/s

To find the time required to close a gap of 8 1/2 miles, we can use the relation ...

  time = distance/speed

  time = (8.5 mi)/(0.4 mi/s) = 21.25 s

The pilot will hear the thunder 21.25 seconds after the flash.

5 0
3 years ago
What binomial is a factor of the trinomial x^2-5x+4
Svetradugi [14.3K]

Explanation:

Let the equation be

a

⋅

x

2

+

b

⋅

x

+

c

. To factorize multiplication of a and c i.e. ac so that sum of factors, if ac is positive (and difference if ac is negative) is equal to b. Now split b into these two components and factorization will be easy.

4 0
3 years ago
Three​ painters, beth,​ bill, and​ edie, working​ together, can paint the exterior of a home in 1212 hours. bill and edie togeth
Viefleur [7K]
Let be be Beth, bi be Bill, and e be edie. Then:
1/be + 1/bi +1/e=1/12
1/bi + 1/e=1/15
10/be +10/bi +10/e+5/be+5/bi=1
Solve for be, bi, and e
☺☺☺☺
5 0
3 years ago
Help me with this i only have 10 mis left
Tpy6a [65]

Answer:

It's definitely C

Step-by-step explanation:

Boston is 35 degrees as well but the lowest temperature of Seattle is 45

4 0
3 years ago
Complete the pattern 650 6.5
Allushta [10]
I think the next one is,65.0
6 0
3 years ago
Read 2 more answers
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