Corner points in this graph are: ( 0,0 ) ( 0,8 ) ( 5,6 ) and ( 8, 0 ).
If we plug those values in : P = 2 x + 3 y
P ( 0,0 )= 0
P ( 0,8 ) = 2 * 0 + 3 * 8 = 24
P ( 6 , 5 ) = 2 * 6 + 3 * 5 = 12 + 15 = 27
P ( 8 , 0 ) = 2 * 8 + 3 * 0 = 16
The maximum value is:
P max ( 6 , 5 ) = 27
Answer: The system consists of parallel lines
Step-by-step explanation:
Given system of lines :
![3y-x=-7](https://tex.z-dn.net/?f=3y-x%3D-7)
Substitute
in
, we get
, which is not true.
That means , system has no solution.
i.e. they are representing parallel lines. [Parallel lines do not intersect and hence they do not have solution.]
Answer:
the statement shows the inverse property of addition as the sum of a number and its inverse is zero.
Step-by-step explanation:
As we know that Inverse Property of Addition states if you add any number to its opposite, the result will be zero.
For example, 13 + (-13) = 0 shows that -13 is the additive inverse of 13.
In other words, the sum of a number and its inverse is zero.
Now checking from the available options,
![0y+\left(-0y\right)](https://tex.z-dn.net/?f=0y%2B%5Cleft%28-0y%5Cright%29)
![\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a](https://tex.z-dn.net/?f=%5Cmathrm%7BRemove%5C%3Aparentheses%7D%3A%5Cquad%20%5Cleft%28-a%5Cright%29%3D-a)
![=0\cdot \:y-0\cdot \:y](https://tex.z-dn.net/?f=%3D0%5Ccdot%20%5C%3Ay-0%5Ccdot%20%5C%3Ay)
![\mathrm{Add\:similar\:elements:}\:0\cdot \:y-0\cdot \:y=0](https://tex.z-dn.net/?f=%5Cmathrm%7BAdd%5C%3Asimilar%5C%3Aelements%3A%7D%5C%3A0%5Ccdot%20%5C%3Ay-0%5Ccdot%20%5C%3Ay%3D0)
![=0](https://tex.z-dn.net/?f=%3D0)
Thus,
![0\cdot \:y+\left(-0\cdot \:y\right)=0](https://tex.z-dn.net/?f=0%5Ccdot%20%5C%3Ay%2B%5Cleft%28-0%5Ccdot%20%5C%3Ay%5Cright%29%3D0)
Therefore,
the statement shows the inverse property of addition as the sum of a number and its inverse is zero.
Answer:
Approximately 54.54% of race happened in the first week.
Step-by-step explanation:
We are given the following in the question:
Length of bike race in three weeks = 2,200 miles
Race covered in first week = 1,200 miles
Percentage of race covered in first week =
![=\dfrac{\text{Race covered in first week}}{\text{Total length of race}}\times 100\%\\\\=\dfrac{1200}{2200}\times 100\%\\\\=54.54\%](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B%5Ctext%7BRace%20covered%20in%20first%20week%7D%7D%7B%5Ctext%7BTotal%20length%20of%20race%7D%7D%5Ctimes%20100%5C%25%5C%5C%5C%5C%3D%5Cdfrac%7B1200%7D%7B2200%7D%5Ctimes%20100%5C%25%5C%5C%5C%5C%3D54.54%5C%25)
Thus, approximately 54.54% of race happened in the first week.
Given:
In a two-digit number, the tens digit is 5 less than the units digit.
The number itself is five more than three times the sum of its digits.
To find:
The number.
Solution:
Let the two digit number is ab. So,
![ab=10a+b](https://tex.z-dn.net/?f=ab%3D10a%2Bb)
Tens digit is 5 less than the units digit.
...(i)
The number itself is five more than three times the sum of its digits.
![10a+b=3(a+b)+5](https://tex.z-dn.net/?f=10a%2Bb%3D3%28a%2Bb%29%2B5)
![10a+b=3a+3b+5](https://tex.z-dn.net/?f=10a%2Bb%3D3a%2B3b%2B5)
![10a+b-3a-3b=5](https://tex.z-dn.net/?f=10a%2Bb-3a-3b%3D5)
...(ii)
Using (i) and (ii), we get
![7(b-5)-2b=5](https://tex.z-dn.net/?f=7%28b-5%29-2b%3D5)
![7b-35-2b=5](https://tex.z-dn.net/?f=7b-35-2b%3D5)
![5b=5+35](https://tex.z-dn.net/?f=5b%3D5%2B35)
![5b=40](https://tex.z-dn.net/?f=5b%3D40)
![b=8](https://tex.z-dn.net/?f=b%3D8)
Putting b=8 in (i), we get
![a=8-5](https://tex.z-dn.net/?f=a%3D8-5)
![a=3](https://tex.z-dn.net/?f=a%3D3)
Therefore, the required number is 38.