Which equation does NOT belong with the other 3? Explain your reasoning.Choices below;
x+3=-1
x+1=-5
x-2=-6
x-9=-13
#4 under vocab section

Answers

Answer 1

Answer: x-9=-13 because the 9 doesn't do with any of the others after the variable

Answer 2

Answer: the fourth one x-9=13 because the 9 dosen't go with any of the other varibles so i agree with vontae.

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PLEASE HELP ASAP I NEED THIS NOW Sara graphs a line passing through points that represent a proportional relationship. Which set of points could be on the line that Sara graphs?A). (2,4),(0,2),(3,9)
B). (6,8),(0,0),(18,24)
C). (3,6),(4,8),(9,4)
D). (1,1),(2,1),(3,3)

Answers

Answer: Option B.

Step-by-step explanation:

By definition, the graph of a proportional relationships is a straight line that passes through the origin (Remember the the origin is at $(0,0)$ ).

Then, the equation have the following form:

$y=kx$

Where "k" is the constant of proportionality (or its slope)

Then, since the Sara graphs a line that represent a proportional relationship, you can conclude that the line must pass through the point $(0,0)$ .

Then:

The set of points in Option A could not be on that line, because when $x=0,y=2$

The set of points $(6,8),(0,0),(18,24)$ (Given in Option B) could be on the line that Sara graphs, because it has the point $(0,0)$

For the set of points shown in Option C and Option D, you can check if the slope is constant:

$C)\ slope=(y)/(x)\n\na)\ slope=(6)/(3)=2\n\nb)\ slope=(8)/(4)=2\n\nc)\ slope=(4)/(9)$

Since the slope is not constant, this set of ponts could not be on the line.

$D)\ slope=(y)/(x)\n\na)\ slope=(1)/(1)=1\n\nb)\ slope=(1)/(2)$

Since the slope is not constant, this set of ponts could not be on the line.

Set of points that could be on the line that Sara graphs are:

Option B). (6,8) , (0,0) , (18,24)

Further explanation

Solving linear equation mean calculating the unknown variable from the equation.

Let the linear equation : y = mx + c

If we draw the above equation on Cartesian Coordinates , it will be a straight line with :

m → gradient of the line

( 0 , c ) → y - intercept

Gradient of the line could also be calculated from two arbitrary points on line ( x₁ , y₁ ) and ( x₂ , y₂ ) with the formula :

$\large {\boxed{m = (y_2 - y_1)/(x_2 - x_1)}}$

If point ( x₁ , y₁ ) is on the line with gradient m , the equation of the line will be :

$\large {\boxed{y - y_1 = m ( x - x_1 )}}$

Let us tackle the problem.

$\texttt{ }$

This problem is about Directly Proportional.

If (x₁ , y₁ ) and (x₂ , y₂) are on the line that represent a proportional relationship, then :

$\large {\boxed { y_1 : x_1 = y_2 : x_2 } }$

Option A

Let:

(2,4) ⇒ (x₁ , y₁)

(3,9) ⇒ (x₂ , y₂)

$4 : 2 \ne 9 : 3$

$2 : 1 \ne 3 : 1$

$2 \ne 3$ → not proportional

$\texttt{ }$

Option B

Let:

(6,8) ⇒ (x₁ , y₁)

(18,24) ⇒ (x₂ , y₂)

$8 : 6 = 24 : 18$

$4 : 3 = 4 : 3$ → proportional

$\texttt{ }$

Option C

Let:

(3,6) ⇒ (x₁ , y₁)

(9,4) ⇒ (x₂ , y₂)

$6 : 3 \ne 4 : 9$

$3 : 1 \ne 4 : 9$ → not proportional

$\texttt{ }$

Option D

Let:

(1,1) ⇒ (x₁ , y₁)

(2,1) ⇒ (x₂ , y₂)

$1 : 1 \ne 1 : 2$ → not proportional

$\texttt{ }$

Learn more

Infinite Number of Solutions : brainly.com/question/5450548
System of Equations : brainly.com/question/1995493
System of Linear equations : brainly.com/question/3291576

Answer details

Grade: High School

Subject: Mathematics

Chapter: Linear Equations

Keywords: Linear , Equations , 1 , Variable , Line , Gradient , Point

#LearnWithBrainly

V equals lwh solve for l
$v = lwh \: solve \: for \: l$

Answers

v = l*w*h

divide by wh on each side

v/wh =lwh/wh

v/(wh) = l

If 120% of a is equal to 80% of b, then what is the value of a b in terms of b

Answers

If you would like to know what is the value of a b in terms of b, you can calculate this using the following steps:

120% of a = 80% of b
120/100 * a = 80/100 * b /*100
120 * a = 80 * b /120
a = 80 / 120 * b
a = 2/3 * b

The correct result would be a = 2/3 * b.

120% = x 1.2

80% = x 0.8

$1.2a=0.8b \n \n a= (0.8)/(1.2)b \n \n \boxed{a= (2)/(3)b }$

B squared minus 7b plus 6

Answers

Answer:

(b-1)(b-6)

Step-by-step explanation:

recheck : -6×-1=6

-6-1= -7

b×b=b²

Last week Betsy made 80 on her quiz.This week she made 76. What percent of decrease in her score

Answers

Answer:

make better picture

Step-by-step explanation:

1. Write an Expression with a Value of 12. it should contain four numbers and two different operations.2. Place Parentheses,if needed, to make each statement true.

1. 7 + 3 x 2 + 4= 25

2. 8 (a Two Above the 8) Divided by 4 x 8 = 2

3. 16 + 8 - 5 x 2 = 14