Answer:
Irrational numbers are numbers that cannot be expressed as the ratio of two whole numbers. This is opposed to rational numbers, like 2, 7, one-fifth and -13/9, which can be, and are, expressed as the ratio of two whole numbers.
<span>In this case, use variables to represent the numbers, Fortunately, they are all in terms of the smaller number. So. let....
x = small number
(x+3) = middle number
2x = large number
If the sum is 75, then all of the numbers added together must equal this. So......
x + (x+3) + 2x = 75
4x + 3 = 75
4x = 72
x = 18
After we find x, we can conclude that..
Smaller number = 18
Middle number = 21
Large number = 36</span>
Answer:
The required equation is ![D=0.5(4)](https://tex.z-dn.net/?f=D%3D0.5%284%29)
Step-by-step explanation:
Consider the provided information.
Student on the cross-country team runs 30 minutes a day as a part of her training,
30 minutes = 0.5 hours
As we know ![Speed=\frac{Distance}{Time}](https://tex.z-dn.net/?f=Speed%3D%5Cfrac%7BDistance%7D%7BTime%7D)
Let the distance she runs in miles, is represented by D, and her running speed, in miles per hour is represented by S.
Therefore, the required equation is: ![S=\frac{D}{0.5}](https://tex.z-dn.net/?f=S%3D%5Cfrac%7BD%7D%7B0.5%7D)
Part (A) At a constant speed of 4 miles per hour for the entire 30 minutes.
Substitute S=4 in above equation.
![4=\frac{D}{0.5}](https://tex.z-dn.net/?f=4%3D%5Cfrac%7BD%7D%7B0.5%7D)
![D=0.5(4)](https://tex.z-dn.net/?f=D%3D0.5%284%29)
![D=2](https://tex.z-dn.net/?f=D%3D2)
Hence, the required equation is ![D=0.5(4)](https://tex.z-dn.net/?f=D%3D0.5%284%29)
Answer:
5
Step-by-step explanation:
Do the multiplication first: 3 - (-2) becomes 3 + 2.
Thus,
3-(-2) = 5