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Thepotemich [5.8K]
2 years ago
13

[PLEASE HELP!!!!!!!!!]

Mathematics
1 answer:
In-s [12.5K]2 years ago
5 0

The list of equations is shown in the picture which equation has No Solution, One Solution, and Infinitely Many Solutions.

<h3>What is a linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have given a linear equation in one variable.

\rm \dfrac{1}{2}y + 3.2y = 20

After solving:

y = 5.40   (one solution)

\rm \dfrac{15}{2}+ 2z -\dfrac{1}{4}=4z+\dfrac{29}{4}  -2z

After solving:

\rm \dfrac{15}{2} -\dfrac{1}{4}=\dfrac{29}{4}

\rm \dfrac{29}{4}=\dfrac{29}{4} (Infinitely Many Solutions)

3z + 2.5 = 3.2 + 3z

2.5 = 3.2  (no solution)

Similarly, we can identify which equation has No Solution, One Solution, and Infinitely Many Solutions.

Thus, the list of equations is shown in the picture which equation has No Solution, One Solution, and Infinitely Many Solutions.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ1

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The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a fin
nikdorinn [45]

Answer:

Part a

The regression equation is, \hat y = 29.3877 - 0.9596x

Part b

The number of crimes for a city at 20 police officers was appointed is approximately 10.

Step-by-step explanation:

<u>x          y         xy         x²         y²</u>

15      17        255      225         289

17      7            119      289          49

17      13         221       289        169

12      21          252      144          441

25      5         125       625          25

11       19          209        121           361

27     7           189        729           49

22    6         132       484          36

146    95      502      2906      1419

Therefore,

\hat B_1=\frac{n \sum xy - (\sum x) (\sum y)}{n (\sum x^2) - (\sum x)^2}

= \frac{8(1502) - (146)(95)}{8(2906)-(146)^2} \\\\= \frac{-1854}{1932} \\\\= - 0.9596

The calculation of the intercept coefficient is as follows:

\hat B_0= \frac{\sum y }{n} - \hat B_1 (\frac{\sum x}{n} )

= \frac{95}{8} - (-0.9596)(\frac{146}{8} )\\\\= 11.875 + 17.5127\\\\= 29.3877

The regression equation is, \hat y = 29.3877 - 0.9596x

b)

The calculation is as follows:

\hat y= 29.3877 - 0.9596x\\\\= 29.3877-0.9596(20)\\\\=29.3877-19.1920\\\\=10.1957

≅ 10

The number of crimes for a city at 20 police officers was appointed is approximately 10.

The number of crimes for a city at 20 police officers was appointed is approximately 10.

That is, the number of polices increases then the number of crimes will be decreases.

8 0
4 years ago
Solve the systems using substitution.<br><br> − 2x − 5y = − 5<br> x = 5y − 20
Law Incorporation [45]
-2(5y-20) - 5y = -5
-10y + 40 - 5y = -5
-15y + 40 = -5
-15y = -45, y = 3
x = 5(3) - 20
x = 15 - 20, x = -5
Solution: x = -5, y = 3... or (-5,3)
7 0
3 years ago
A right triangle is drawn on a coordinate plane. Two vertices of the triangle are points R(−9,6) and T(10,−7) . The third vertex
SSSSS [86.1K]
The coordinates of point S would be (10,6), so the distance from point T to point S would be 13. :) 
4 0
3 years ago
31-inch piece of steel is cut into three pieces so that the second piece is twice as long as the first piece and the third piece
pychu [463]

"31-inch piece of steel is cut into three pieces"

Call the pieces a,b,c

a + b + c = 31

"second piece is twice as long as the first piece"

b = 2a

"third piece is one inch more than seven times the length of the first piece"

c = 1 + 7a

Ok, we have our equations, let's substitute the second and third into the first.

a + 2a + 1 + 7a = 31

10a + 1 = 31

10a = 30

a = 30/10 = 3

b = 2a = 6

c = 1 + 7a = 22

Check: 3 + 6 + 22 = 31, good

Answer: 3 inches, 6 inches, 22 inches


4 0
3 years ago
James has a twenty-dollar bill in his wallet. A LEGO set cost $6.25. What is the greatest number of LEGO sets James can purchase
Liono4ka [1.6K]

Answer:

s

kj

Step-by-step explanation:

sjlghb

4 0
4 years ago
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