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FinnZ [79.3K]
2 years ago
13

It took the Selby family hours round -trip to drive from their house to their beach house 154 miles away . Find their average sp

eed . 5 1/2
Mathematics
1 answer:
seropon [69]2 years ago
3 0

Step-by-step explanation:

Distance = 154 miles .

Time = 5 ½ hrs .

We know ,

Speed = s / t

v = 154 mi/ 5.5 hrs = 28 mi / hr

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-1/4 in decimal form
uranmaximum [27]

Answer:

-0.25

Step-by-step explanation:

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3 years ago
The solution of two linear equations is (-2,2). One equations has a slope of 3. The slope of the other equation is the negative
sineoko [7]

Answer:

Its true ⇒ answer (a)

Step-by-step explanation:

* The solution of two linear equation means that this solution

  is a solution for each equation

* To check if the point is a solution of an equation

- Substitute its coordinates in the equation, if the left hand side

 is equal the right hand side, then the point is a solution

 of this equation

* Lets study our problem

- (-2 2) is the solution of two linear equations

- The slope of one equation is 3

- The slope of the second equation is the negative reciprocal

 of the slope of the first, means = -1/3

* Check the this conditions in the given equations

- In the equation y = 3x + 8 ⇒ the slope = 3

- In the equation y = -1/3 x + 4/3 ⇒ the slope = -1/3

* Now lets substitute the solution (-2 , 2) in the both equations

- First equation

∵ y = 2 ⇒ L.H.S

∵ 3(-2) + 8 = 2 ⇒ R.H.S

∵ L.H.S = R.H.S

∴ (-2 , 2) is a solution of the equation y = 3x + 8

- Second equation

∵ y = 2 ⇒ L.H.S

∵ (-1/3)(-2) + 4/3 = 2/3 + 4/3 = 6/3 = 2 ⇒ R.H.S

∵ L.H.S = R.H.S

∴ (-2 , 2) is a solution of the equation y = -1/3 x + 4/3

∴ (-2 , 2) is the solution of the two equations

* Its true

5 0
2 years ago
Read 2 more answers
Dan earns £8.30 per hour how much will he earn for 9 hours work
Nana76 [90]

Hey there!

\large\boxed{\$74.70}

The unit rate is 8.30 for every hour.

If he earns $8.30 an hour and works 9 hours, multiply 8.30 by 9.

8.30 x 9 = 74.70

Hope this helps!

3 0
2 years ago
Read 2 more answers
What are the units for the spring constant, k?
svlad2 [7]
The spring constant, k, in Hooke's Law has units of Newton per meter since it is a constant for the force applied per unit of length. The spring constant measures how strong and stiff the spring is. Hope this answers the question. Have a nice day.
3 0
2 years ago
can u tell me which letter the answer is.. i know how to do this problem im just confused what the answer is​
Ede4ka [16]

Answer:

Im pretty sure its a :3

Step-by-step explanation:

7 0
2 years ago
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