It’s the second one, (10,-9)
The answer is -a + b = 0
If she wants to solve <span>a system of linear equations by elimination and if one equation is unknown, one of the solutions in the unknown equation must be negative:
Known equation: a + b = 4
Unknown equation: -a + b = ?
We know that a = 2 and be = 2, thus:
</span>Unknown equation: -2 + 2 = 0
The general form of the equation is -a + b = 0
Let's check it out:
Known equation: a + b = 4
Unknown equation: -a + b = 0
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Add them up: 2b = 4
b = 4/2 = 2
a + b = 4
a = 4 - b
a = 4 - 2
a = 2
So, the second equation is correct.
Answer:
units.
Step-by-step explanation:
Let x be the width of rectangle.
We have been given that the length of garden is 2 units more than 1.5 times it’s width. So length of the rectangle will be: 
.
To find the length of total fencing we need to figure out perimeter of rectangle with width x and length .
Since we know that perimeter of a rectangle is two times the sum of its length and width.
Upon substituting length and width of garden in above formula we will get,
Upon using distributive property we will get,
Therefore, the length of required fencing will be units.
Answer:
- 9 camels
- 6 camels
- 2 camels
Step-by-step explanation:
If I add 1 camel to the herd, the first person can get (1/2)×18 = 9 camels.
The second person gets (1/3)×18 = 6 camels.
The third person gets (1/9)×18 = 2 camels.
The total number of camels distributed is 9+6+2 = 17 camels.
The one remaining is returned to me.
- 1st person: 9 camels
- 2nd person: 6 camels
- 3rd person: 2 camels
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<em>Comment on the question</em>
This is a trick question, a joke, a riddle. 17 camels cannot be divided in the given proportions without dividing a camel. The total of camels distributed should be 1/2 +1/3 +1/9 = 17/18 of the herd. Each person actually gets 18/17 of their allotment.
Answer:
Step-by-step explanation:
Given
Straight Line, PS
Such that
Required
Find PS
From the attachment above, it can be seen that RS is a continuation of PS;
This implies that
Substitute and
Collect like terms
Hence, the length of PS is
