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ryzh [129]
3 years ago
13

Find three solutions of the linear equation 3x – 5y =7

Mathematics
2 answers:
m_a_m_a [10]3 years ago
7 0

Answer:

Those value satisfy the equation are solution

So, (0,7/5), (7/3,0) , (9,4) are the solution

Bond [772]3 years ago
4 0

Answer:  (0, -7/5) , (1, -4/5), (2, -1/5)

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

There are an infinite number of answers.  I chose the simplest which was to let x = {0, 1, 2} and solve for y.

x = 0:     3(0) - 5y = 7

                 0  -5y = 7

                     y = -7/5

(0, -7/5)

x = 1:     3(1) - 5y = 7

             3  -  5y = 7

                   -5y = 4

                     y = -4/5

  (1, -4/5)

x = 2:     3(2) - 5y = 7

               6  -  5y = 7

                   -5y = 6

                     y = -1/5

  (2, -1/5)

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For his phone service, Ivan pays a monthly fee of $14, and he pays an additional $0.05 per minute of use. The least he has been
Tomtit [17]

Answer:

1215 minutes are the possible numbers he has used his phone in a month.

Step-by-step explanation:

He has a monthly fee of 14$ then to the least that he has been charged we need to substract the monthly fee as follows:

Monthly charged = 74,75-14

Monthly charged= 60,75$

Then he pays an additional 0,05 $/minute of use, to know the consume:

Minutes= \frac{60,75}{0,05}

Minutes= 1215 possible numbers of minutes he has used his phone.

8 0
3 years ago
Is 1709 divisible by 2,3,5,6,9
coldgirl [10]
Hey mate!
Let's figure this out!

The answer is false.

1709 / 2 = 854.5
1709 / 3 = 569.6
1709 / 5 = 341.8
1709 / 6 = 184.8
1709 / 9 = 189.8


Hope this helps! :)

6 0
3 years ago
Read 2 more answers
The quadratic function h(t) = -16.1? + 150 models a ball's height, in feet, over time, in seconds,
Sliva [168]
<h2>Hello!</h2>

The answer is: The first graphic representation.

<h2>Why?</h2>

We are given a quadratic equation, meaning that it could be two possible solutions for the exercise, however, we are talking about time, so we have to consider only the obtained positive values.

Let's make the equation equal to 0 in order to find the values of "t"

h(t) = -16.1t^2 + 150

0=-16.1t^2+150

16.1t^2=150

t^2=\frac{150}{16.1} =9.32

t=+-\sqrt{9.32} =+-3.05

t1=3.05

t2=-305

So, discarding the negative value, we can use the possitive value to find the correct graphic representation.

To find the correct graphic representation we must take into consideration the following:

- We must remember that the sign of the coefficient of the quadratic term (t^2) will define if the parabola opens downward or upward.

From the given quadratic (or parabola) equation we have:

a=-1

b=0

c=150

So, since the coefficient of the quadratic term is negative, the parabola opens downward.

- Since we are looking for a graphic that represents the change in height over time, we need to look for a graphic that shows only positive values for the x-axis (time)

- We are looking for a parabola which y-axis intercept is equal to 150.

Therefore, the graphic representation of the quadratic function that models a ball's height over time is the first graphic representation.

Have a nice day!

5 0
2 years ago
Can u help me answer dis
gavmur [86]

Answer:

the base is 10 and the height is 6.4

3 0
2 years ago
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Lerok [7]
The angle immediately below x makes up the third angle of the isosceles triangle whose base angles are 55°. That third angle and x are "vertical" angles, hence equal. The value of x can be found from the sum of angles of a triangle:
  x + 55° + 55° = 180°
  x = 70°

The appropriate choice is the 2nd one:
  70°
4 0
3 years ago
Read 2 more answers
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