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Solving the system of linear inequalities of two variables x＋y≤400(1) x÷3＋2y≤600(2)
(2) * 3 - (1) get
(X+6Y)-(X+Y)≤1800-400
5Y ≤ 1400
Y≤280 (3)
(1) - (3) get
X≤120
So x ≤ 120
Y≤280
Is there a system of linear inequalities of two variables? If so, how to solve it?
Yes, your teacher is afraid that you can't remember too much
Binary, is two unknowns, once, is the highest power is one
give an example
3x+4Y > 12
2y-x < 3
The above formula can be changed into:
3x+4Y > 12
2x-4y > - 6 [multiply by 2 after item shifting]
It can be seen from the sum of the two formulas
x>6
In the same way
The range of Y
This is the scope of high school
Bivariate linear inequality system calculation problem to 41 inequality system. Um. To bivariate linear Oh!
x-7>26
3x50
-4x>3
x+5>-1
4x6
2xo.1
-3x-1
4x>-12
3(2x+5)>2(4x+3)
10-4(x-4)x-5/4
2x+5
English translation
1. Translate phrases and sentences
Please help yourself
How about?
3. OK
4. Some eggs
It's the same with me
Good idea
7. Some fish
1.help yourself
2.what about...
3.OK
4.some eggs
5.Me too
6.good idea
7.some fish and meat
The simplest fraction, whose numerator is divided by 2 and denominator multiplied by 3, is reduced to 329. The simplest fraction is______ ．
329 × 2 × 3 = 1829
Can some and many be followed by countable nouns?
Are some strawberries and many strawberries right?
Some can be followed by countable and uncountable, many can only be followed by countable or compound nouns, such as: many people
If a + 23 = B4 = C + 56, and 2a-b + 3C = 21
Let a + 23 = B4 = C + 56 = k, then a = 3K-2, B = 4K, C = 6k-5, so 2 (3K-2) - 4K + 3 (6k-5) = 21, the solution is k = 2, so a = 6-2 = 4, B = 8, C = 7, so a: B: C = 4:8:7
What kind of words do prepositional phrases modify and act as
The prepositional phrase is usually used to modify the predicate, as an adverbial
He has a house with a garden
In the triangle ABC, the angle ACB = 90 ° ad bisection angle BAC, De is perpendicular to AB, and the perpendicular foot is a straight line e, which proves that ad is the vertical plane of CE
Prove: because de ⊥ AB, so the angle AEC = 90 ° and because ad bisects ∠ BAC, so the angle CAD = angle bad, and because ad is the common edge, angle ACB = 90 ° so the triangle ACD is equal to the triangle AED, so AC = AE, DC = De
French, French how to say in English?
Frank
What's the difference between French and French?
Frank
A member of a Germanic tribe in the Rhine region at the beginning of A.D., especially a branch of the franksali, who conquered Gaul around A.D. 500 and established a vast empire, reaching its peak in the 9th century
French
n.
French, French
adj.
French, French, French
France
France, France
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