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polet [3.4K]
2 years ago
11

Which of the following is not a requirement of a standard form equation Ax+By=C? a)A ≥ 0. b)B ≥ 0. c)A and B are not both 0. d)A

, B, and C are integers with a greatest common factor of 1.
Mathematics
2 answers:
Ghella [55]2 years ago
7 0
<h2>Answer:</h2>

The following which is not a requirement of a standard form of equation Ax+By=C is:

        b)   B ≥ 0    

<h2>Step-by-step explanation:</h2>

We know that the standard equation of a line is given by:

        Ax+By=C

where A,B and C are integers and A is taken to be a non-negative integer i.e. (A≥0) also the greatest common factor of A,B and C is: 1.

Also A and B can't be both zero.

       Hence, the correct option is:

                Option: b

Anon25 [30]2 years ago
6 0

Answer:

c)A and B are not both 0

Step-by-step explanation:

The Standard Form for a linear equation in two variables, x and y, is Ax + By = C. If A and B are both equal to zero, then C = 0 and that doesn't represent a linear equation because there is no variable, it just a constant equal to a number.

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Jake needs 7.59 meters of wood to complete a school project. He buys a 2.21−meter plank of wood and a 3.12−meter plank of wood.
Alexeev081 [22]

Answer:

2.26 meters

Step-by-step explanation:

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8 0
2 years ago
The combined land area of the countries A and B is 178,973 square kilometers. Country A is larger by 373 square kilometers. Dete
ruslelena [56]
X=area of the country A
y=area of the country B
we saggest this system of equations:
x+y=178,973
x=y+373
we solve this system of equations by substitution method.
(y+373)+y=178,973
2y=178,973-373
2y=178600
y=178,600/2=89,300

x=y+373
x=89300+373=89,673

answer:
area of the country A=89,673 Km²
area of the country B=89,300 Km²

To check
The combined land area of the countries A and B is =89,673 Km²+89,300 Km²=178,973 Km²
Country A (89,673 Km²) is 373 Km² more larger than country B (89,300 Km²).
89,673 Km²=89,300 Km²+373 Km²
7 0
3 years ago
Cant find the answer
dedylja [7]

Answer:

Carter family = 25 hours

Davis family = 31 hours

Step-by-step explanation:

Let's say the number of hours the Carter family used their sprinkler is x and the number of hours the Davis family used their sprinkler for is y.

So combined:

x + y = 45 hours

and we are also told that:

40x + 15y = 1300 L

So we can do simultaneous equations to solve the problem.

With some rearranging, we can figure out that:

y= 45 - x

and by substituting that into the second equation:

40x + 15 (45 -x) = 40x + 675 - 15x = 1300L

25x = 1300 - 675

25x = 625

x = 25 = hours that the Carter family used their sprinkler

and we can substitute that back into the original equation to find how many hours the Davis family used their sprinkler so:

25 + y = 56

y = 31

The Davis family used their sprinkler for 31 hours whilst the Carter family used their sprinkler for 25 hours.

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Select all of the expressions that are equal to 6
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