Please help! ILL GIVE BRAINLIST

Answer:

x = 7

y = 11

Step-by-step explanation:

Given the system;

y = 2x - 3

x + y = 18

1. Approach

The easiest way to solve this system of equations is to solve the second equation for the variable (y). Then add the systems, use algebra to solve for the value of (x), then substitute that value back into one of the original equations to solve for the value of (y). Another name for the method in use is the method of elimination, this is when a [erspm manipulates one of the equations in a system of the equation such that when they add the equations, one of the variables eliminatates. Thus, they can solve for the other variable and the backsolve for the value of the unknown variable.

2. Solve one of the equations for a variable

Manipulate the system such that each equation is solved for the same variable,

x + y = 18

Inverse operations,

x + y = 18

-18        -18

x + y - 18 = 0

   -y         -y

x - 18 = -y

3. Use elimination

Now substitute this back into the original system,

y = 2x - 3

-y = x - 18

Add the systems,

y = 2x - 3

-y = x - 18

_________

0 = 3x - 21

Inverse operations,

0 = 3x - 21

+21       +21

21 = 3x

/3    /3

7 = x

4. Find the value of the unknown variable

Backsovle to find the value of (y),

x + y = 18

Substitute,

7 + y = 18

Inverse operations,

7 + y = 18

-7        -7

y = 11

Answer:

X=3 Y=15

Step-by-step explanation: First you need to use the problem 18/2=x to find the value of x. Now to find the value of y, you need to subtract 3 from 18.  Then you solve

15=2(9)-3 15+3=18

The pair of corresponding sides of triangles are,

⇒ MN and RQ

Option B is true.

A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

Given that;

Triangle LMN,

Side LM is 7, MN is 5, and LN is 4.

And, Triangle PQR,

Side PQ is 8.8, QR is 11, RP is 15.4.

Here, Two triangles are similar.

Hence, The pair of corresponding sides of triangles are,

⇒ MN and RQ

Option B is true.

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Answer:

15 miles per gallon

Step-by-step explanation:

If a car travels 45 miles and uses 3 gallons of gas than to find how many miles can be traveled using 1 gallon, you do 45/3, miles/gallons to get 15 miles/1 gallon.

Hope this helps,

-Shaylee

Answer:

13. B

14. 10.4 = x + 2.6

15. 7.8

16. The amount that was already in the pitcher

Step-by-step explanation:

Answer:

m = 180 - 67 (angles in a straight line are supplementary)

m = 113° [option D]

Answer:

19 4/5

Step-by-step explanation:

Answer:

19.8

Step-by-step explanation:

if the number inside the abs value bracket is positive, it will be the same number, or it will be the positive form

if its negative, it will turn positive

Answer:

45.98m/s, 26.82 seconds

Step-by-step explanation:

simple math, divide the length of the track by the time or speed.

1/8                                     ngthbg vtvt4crvg ecv ercfg bg bn

Answer:I might be wrong but I think it’s 1/8 sorry if wrong probably is

Step-by-step explanation:

Answer:

52 square units

Step-by-step explanation:

Answer:

80

Step-by-step explanation:

Answer:

the first one

Step-by-step explanation:

the reason this is because it is showing a linear graph and when it comes to correlation it has to be linear

The scatter plots shows the strongest correlation in graph A. Therefore, option A is the correct answer.

Scatter plots are used to observe and plot relationships between two numeric variables graphically with the help of dots. The dots in a scatter plot shows the values of individual data points.

A strong positive or negative correlation graph is where the line touches or is very close to every data point, and the line has a positive or negative slope.

From the graph A, we can see the points are closely aligned.

Therefore, option A is the correct answer.

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Answer

I am not a highschooler, but I know the answer.

Its the first one (left side), and the last one (right side)

Step-by-step explanation:

Hope that helps. sorry if this answer was too late, I just saw this question pop up for me to answer.

Answer:

1. x > 125

2. y ≥ 17

3. x ≥ -11

Step-by-step explanation:

Answer:

Step-by-step explanation:

hi how r u btw it is 750

CAN I HAVE BRAINLIEST PLEASE

Answer:

1. 3x + 2

2. 0.25x - 6.5

3. $5.50 per sandwich

Step-by-step explanation:

1.

6x + 1 - (3x - 1)

PEMDAS says solve everything in the parentheses first

There is nothing left to simplify within the parentheses.

Since there's also no exponents, multiplication, or division, let's combine like terms starting from left to right

6x - 3x + 1 + 1

Negative + Negative = Positive, hence why it became 1 + 1

3x + 2

2.

(3x - 1) - 2.75 (x + 2)

PEMDAS says to do multiplication next (since parentheses are fully simplified and there are no exponents)

(3x - 1) - 2.75x - 5.5

Negative + Positive = Negative, hence why it became -5.5

3x - 1 - 2.75x - 5.5

Combine like terms

3x - 2.75x - 1 - 5.5

0.25x - 6.5

3.

Set up an equation:

Variable x = cost of sandwiches

4x + 4(2) = 30

4x + 8 = 30

Subtract 8 from both sides to isolate the variable

4x + 8 - 8 = 30 - 8

4x = 22

Divide both sides by 4

4x ÷ 4 = 22 ÷ 4

x = 5.5

$5.50 per sandwich

Answer:

Therefore, all the numbers defined so far are subsets of the set of real numbers. ... Next, choose any point to represent the number zero; this point is called the ... lengths on both sides of the origin and label each tick mark to define the scale. ... to see that −1 is greater than −5 until we graph each number on a number line.

Step-by-step explanation:

Answer:

Therefore, all the numbers defined so far are subsets of the set of real numbers. ... Next, choose any point to represent the number zero; this point is called the ... lengths on both sides of the origin and label each tick mark to define the scale. ... to see that −1 is greater than −5 until we graph each number on a number line.

Step-by-step explanation:

Answer:

The cross section can be:

1. A circle

2. An ellipse

3. A parabola

4. A hyperbola

Step-by-step explanation:

Answer:

Is there a picture because I don’t know what you need help with you typed a lot of words but not a picture

Step-by-step explanation:

Answer: ok this is going to be hard to explain without the picture but, here you go  

    (im talking about the numbers below the number line and the circles above it to find the choice that matches to a b c or d)

2: 0 circles 3: 4 circles 4: 1 circle 5: 2 circles 6: 5 circles 7: 2 circles 8: 1 circle 9:  0 circles 10: 0 circles 11: 0 circles 12: 0 circles 13: 1 circle and last but not least 14: 0 circles. Find the answer on your quiz that matches what I just said.  

Step-by-step explanation: I did the quiz and saw the correct answer so just find the one that matches what I just said then your good. Have a good day.

Step-by-step explanation:

Answer:

2/6

Step-by-step explanation:

4/12=x/6

4/12 simplified = 2/6

2/6x2= 4/12

Answer:

2/6

Step-by-step explanation:

12/2=6

4/2=2

Answer:

The 3rd one I think

Step-by-step explanation:

try it out, good luck

The solution is, 12units is the perimeter of AABC.

Here, we have,

Perimeter of ∆ABC = AB + BC + AC

Formula: distance= √(x_2-x_1)²+(y_2-y_1)²

Distance between A(1, 1) and B(4,1):

Where,

AB = √(4-1)^2 + ( 1-1)^2

AB = 3 units

Distance between B(4,1) and C(4,5)

Where,

BC = √(4-4)^2 + (5-1)^2

BC = 4 units

and, we have,

AC = 5 units

so, we get,

Perimeter of ∆ABC = 3+4+5

                                    = 12 units

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Answer: 23x + 62

Step-by-step explanation: First multiply 5 and 4x which you should get 20x, then multiply 5 and 12 which is 60 and add it to your expressions which looks like 20x + 60 + 3x + 2. Then your going to add 60 and 2 and get 62, lastly add 20x and 3 together and get 23x, So your new expression should look like 23x + 62

Answer:

1-120 in. 2-16cm 3-27 m

Step-by-step explanation:

Please be mad if im  wrong

Answer:

Number 1 is: 120

Number 2: is 42

Number 3 is:27

Step-by-step explanation:

How to solve number 1 is to multiply 4 times 5 then multiply it by 6 and that is how you get 120

How to solve number 2 Multiply 3 times 2 then you get 6 then you do 6 times 7 and that is how you get 42

How to solve number 3 Multiply 3 times 3 then you get 9 then 9 times 3 equals 27

That is how you solve hope this help :)

It would be great if you gave brainlist

Answer:

113.1

Step-by-step explanation: