Answer:
look at explanation
Step-by-step explanation:
To solve all of these questions you just need to scale. While scaling you can divide or multiply.
1. 
(divide by 4 to get unit rate)
unit rate = 
2. If it takes one hour to travel 40 miles, then we don't have to scale or anything. We know 
, the answer is...
"It'll only take one hour to travel 40 miles. This is correct because the unit rate is . "
3. Knowing that the constant speed of the plane is 
, we can scale then add half of the unit rate to get our answer.
x 3 = 
800 x 3 = 2400
then add half of unit rate which is 
![\sqrt[2]{800}](https://tex.z-dn.net/?f=%5Csqrt%5B2%5D%7B800%7D)
= 400
so, our answer is 
4. 
<--- ( divided by 2) 
( multiplied x 2.5) ---> 
To get an easier way to find the answer, if possible you can scale back farther than the 1 hour mark.
Elmer would take 2 and a half hours to ride 15 km.
5. The boys speed is 
. All we need to do is divide by 2. ![\sqrt[2]{8}](https://tex.z-dn.net/?f=%5Csqrt%5B2%5D%7B8%7D)
= 4
Answer:
To find the domains you must graph this equation and find the x-coordinates of the points plotted. That's the domain.
Remember, if two points have the same x-coordinate then do not repeat the number when stating the domain. Domain also always must be written in the least to greatest order. Domains must be written with {} enclosing them.
So if the x-coordinates were 4,5,6,4,7,5
You would write the domain as {4,5,6,7}
The lengths of the first, second and third piece are respectively 8 ft, 16 ft and 32 ft
<h3>How to solve Algebra word Problems?</h3>
Let the length of the first piece be x.
Let the length of the second piece be 2x
Let the length of the thrid piece be 4x
Since the total length of the piece is 56 ft, then we can say that;
x + 2x + 4x = 56
7x = 56
x = 56/7
x = 8 ft
Thus, length of first piece = 8 ft
Length of second piece = 2 * 8 = 16 ft
Length of third piece = 4 * 8 = 32 ft
Thus, the lengths of the first, second and third piece are respectively 8 ft, 16 ft and 32 ft
Read more about Algebra Word Problems at; brainly.com/question/13818690
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7x+4=32
7x=28
X=4
Creo que así se ase
Answer:
P=8h
Step-by-step explanation:
P is the total amount of dollars that Keith will make, while h is the number of hours he will work for. If you multiply the number of hours he works for and how much he makes in an hour which is 8. You will get the total amount.
