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Nesterboy [21]
3 years ago
15

URGENT WILL GIVE BRAINLIEST

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
3 0

Answer:

40

Step-by-step explanation:

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Find all solutions of the given system of equations (If the system is infinite many solution, express your answer in terms of x)
lisov135 [29]

Answer:

(a) The system of the equations \left \{ {2x-3y\:=3} \atop {4x-6y\:=3}} \right. has no solution.

(b) The system of the equations \left \{ {4x-6y\:=10} \atop {16x-24y\:=40}} \right. has many solutions y=\frac{2x}{3}-\frac{5}{3}

Step-by-step explanation:

(a) To find the solutions of the following system of equations \left \{ {2x-3y\:=3} \atop {4x-6y\:=3}} \right. you must:

Multiply 2x-3y=3 by 2:

\begin{bmatrix}4x-6y=6\\ 4x-6y=3\end{bmatrix}

Subtract the equations

4x-6y=3\\-\\4x-6y=6\\------\\0=-3

0 = -3 is false, therefore the system of the equations has no solution.

(b) To find the solutions of the system \left \{ {4x-6y\:=10} \atop {16x-24y\:=40}} \right. you must:

Isolate x for 4x-6y=10

x=\frac{5+3y}{2}

Substitute x=\frac{5+3y}{2} into the second equation

16\cdot \frac{5+3y}{2}-24y=40\\8\left(3y+5\right)-24y=40\\24y+40-24y=40\\40=40

The system has many solutions.

Isolate y for 4x-6y=10

y=\frac{2x}{3}-\frac{5}{3}

3 0
3 years ago
2 2/3 divided by 1/3?
sergejj [24]
2 2/3 = 2x3+2/3 = 8/3
8/3 / 1/3 = 8/3 x 3/1 = 8/1 = 8
4 0
3 years ago
Read 2 more answers
Pls i need heellllp!
attashe74 [19]

Answer:

AB

Step-by-step explanation:

the hypotenuse is always the longest side in a triangle

6 0
3 years ago
An item that is on sale for 40% off costs $66. What was the item's regular price?
IRINA_888 [86]
  • <em>Answer:</em>

<em>The regular price was $110</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there ! </em>

<em />

<em>60% .......... $66</em>

<em>100% ..........$ x</em>

<em>x = 100×66/60</em>

<em>=  6600/60</em>

<em>= $ 110</em>

<em />

<em>Good luck !</em>

7 0
3 years ago
After spending some time looking for his pump, Marlon pumps up an uninflated balloon, pumping air into it at a constant rate. He
galina1969 [7]

Answer:

Graph D

Step-by-step explanation:

Initially, Marlon was looking for his pump. Thus, no air was pumped into the balloon until he got the pump. On getting the pump, he inflated the balloon with air at a constant rate, after which he tied it with a string to prevent the air from escaping.

The analysis is that, at the time he decided to inflate the balloon till he got a pump, the volume of air in the balloon is zero with respect to time. Pumping air at a steady rate into the balloon increases the volume of air flowing into it gradually and steadily.

When the volume got to a definite amount, he stopped pumping air and tied with a string. Thus, the volume of air in the balloon remains constant.

8 0
3 years ago
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