A student said that x = 4 was not a solution to the question 3(x -6) = -8
Here is their work:
3(x -6) = -8
3 (4 -6) = -8
12 -6 = -8
6≠ -8
so x = 4 is not a solution

Did the student substitute x=4 correctly? How do you know?

Did the student simplify with Order of Operations correctly? How do you know?

If you try the problem, what do you get when you substitute x=4 into the equation?

Answer:-10

Step-by-step explanation: The slope-intercept form is

y

=

m

x

+

b

y

=

m

x

+

b

, where

m

m

is the slope and

b

b

is the y-intercept.

y

=

m

x

+

b

y

=

m

x

+

b

Find the values of

m

m

and

b

b

using the form

y

=

m

x

+

b

y

=

m

x

+

b

.

m

=

−

6

m

=

-

6

b

=

−

10

b

=

-

10

The slope of the line is the value of

m

m

, and the y-intercept is the value of

b

b

.

Slope:

−

6

-

6

y-intercept:

−

10

Answer:

The answer for question 22 is 40.

-

Step-by-step explanation:

[tex] \frac{8 \: red \: cars}{3 \: blue \: cars} = \frac{x}{15 \: blue \: cars} \\ \\ \frac{3x}{3} = \frac{120}{3} \\ \\ x = 40[/tex]

Answer: 5.824 m / min

Step-by-step explanation:

Change in position = -2.1m to -38.6m

Distance = |-38.6 m - (-2.1m) |

=|-36.5| m

= 36.5 m

Time = [tex]6\dfrac14\ min=\dfrac{6\times4+1}{4}\ min[/tex]

[tex]=\dfrac{25}{4}\ min[/tex]

The average change in Michelle's position each minute = [tex]\dfrac{36.5}{\dfrac{25}{4}}\text{ m/min}[/tex]

[tex]=\dfrac{36.4\times4}{25}\text{ m/min}\\\\= 5.824\text{ m/min}[/tex]

Hence, the average change in Michelle's position each minute = 5.824 m / min

Answer:

y = 3

Step-by-step explanation:

y is inversely proportional to x setup:  y = k/x

'k' is the constant of variation; find this first

7 = k/9

k = 63

now use 'k' to find 'y'

y = 63/21

y = 3

Answer:

Step-by-step explanation:

Option " C" is correct this question is from fixed& variable

Answer:

C

Step-by-step explanation:

The monthly fee is going to be $5 and she's playing for a month, so let's put that down-

5+

Now, we need to figure out how much she plays - since we don't know this, we put it as a letter, and since we're calculating the cost, we add this to the equation-

5+0.25*x

Therefor, the answer is C(x)=5+0.25x

If the plays for 4 hours, the equation would be 5+(0.25*4)

Answer:

24

Step-by-step explanation:

its positive

Answer:

-25 ∠ 24

Step-by-step explanation:

Answer:

The cost of meal is: $20

Step-by-step explanation:

Given

Percentage of tax = 7%

Also given that the amount of tax is $1.40

Let x be the price of meal

Then the tax will be 7% of x

It can be written mathematically as:

[tex]1.40 = 7\%\ of\ x[/tex]

We will simply solve this equation to get the price of meal

So,

[tex]1.40 = 0.07*x\\x = \frac{1.40}{0.07}\\x = 20[/tex]

Hence,

The cost of meal is: $20

Answer:

2/11 or roughly 18%

Step-by-step explanation:

fisrt we have to find all the numners that fullfil this condition. They are 9 and 36, so only two. then we have to divide 2 by the all the numbers and we get 2/11

Answer:

25 acres

Step-by-step explanation:

25 acres  hope this helps

Answer:

Answers are below.

Step-by-step explanation:

From smallest to largest:-

Domain: {0, 3, 5, -4, -6, -9}

Range: {0}

Answer:

The domain is the set of all the values of x

The range is the set of all the values of y.

Domain:

{0,1,2,4,5,6,7,8}Range: {5,4,9,6,0}

Step-by-step explanation:

Answer:

Algebra tiles make solving equations, merging like words, or factoring polynomials a visual operation, similar to students using counters to make sense of addition in elementary school, or students using number lines to make sense of integers.

Step-by-step explanation:

i hope this helped

Answer:

2x(5+13)

Step-by-step explanation:

add then multiply by 2

Answer:

to find perimeter

= 2(L+w)

= 2(5+13)

10+26

36

so the answer is 2×(5+13)

hope it's helpful ❤❤❤❤

THANK YOU.

Answer:

the distance between two opposite corners of the intersection is 8.60 meters

Step-by-step explanation:

The computation of the distance between two opposite corners of the intersection is given below:

Here we applied the Pythagoras theorem

[tex]= \sqrt{7^2 + 5^2} \\\\= \sqrt{49 + 25} \\\\= \sqrt{74}[/tex]

= 8.60 meters

hence, the distance between two opposite corners of the intersection is 8.60 meters

Answer:

-11 53/54

Step-by-step explanation:

3 x 18 = 54

1/54 - 12 = -11 53/54

Answer:

Originally Answered: How many times does 8 occur in 1 to 100? 20 8's occur from 1 to 100. 8, 18, 28, 38, 48, 58, 68, 78, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 and 98.

Step-by-step explaintion: i am 5 million iq brainlist pls

Answer:

n equals 4

Step-by-step explanation:

Answer: x=40°

Step-by-step explanation:

The two triangles are congruent (I think it’s called the interior angle proof) so the bottom right angle is also 65°. All angles in a Triangle equal 180°, so 180-(75+65)=40

Answer:

huh

Step-by-step explanation:

just multi ply its not hard

Answer:

x=12,  SV=30

Step-by-step explanation:

Since <S is congruent to <T, you know that line TV is equal to line SV

2x+6=3x-6

subtract 2x on both sides

6=x-6

add 6 to both sides

12=x

x=12

To find SV you need to plug in x

2(12)+6

24+6

30

Answer:

option B is correct option.

Step-by-step explanation:

Explain what the point (20,160) represents in the context of the situation? Check all boxes that apply

Looking at the graph we come to know that 20 shirts cost $160 because x -axis represent number of shirts and y-axis represent Total Cost

So, the point(20,160) means x = 20 and y=160

We have 20 shirts and the cost is $160

So, option B is correct option.

Answer:

10.75 hours

Step-by-step explanation:

h= Hours  86divided by 8 = h= 10.75

Answer:

AC=44

Step-by-step explanation:

The value of AC is 12 unit.

A special form of quadrilateral called a parallelogram has both pairs of its opposite sides parallel and equal.

Given:

ABCD is a parallelogram.

And  BE = 2x + 2, BD = 5x – 3, and AE = 4x – 6.

The two diagonals bisect each other.

AC = AE + EC

AC = 2AE

AC = 8x-12

The diagonals of a parallelogram are equal.

So,

BD = AC

5x+3 = 8x-12

x = 3

So, AC = 12

Therefore, the AC is 12 unit.

To learn more about the parallelogram;

https://brainly.com/question/29133107

#SPJ6

Answer:

$12

Step-by-step explanation:

30 x 40

100

= 12

The sale price is $12.

The price of the pair of jeans that are on sale for 30% off will be $28.

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates for one hundred percent. It is symbolized by the character '%'.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

Your friend wants to buy a pair of jeans that are on sale for 30% off if the jean's original price is $40.

Let "S" be the price of sales. Then the equation is given as,

30% = [($40 - S) / $40] x 100

0.30 = ($40 - S) / $40

S = $40 - $12

S = $28

The price of the pair of jeans that are on sale for 30% off will be $28.

More about the percentage link is given below.

https://brainly.com/question/8011401

#SPJ2

Answer:

the original price is 545$

Step-by-step explanation:

299.75$ : 55$ = x : 100

55x = 299.75 x 100

55x : 29975

divide 29975 by 55 =

545

Answer:

i may be entirely wrong but evelyn has more days

susan=18

evelyn=20.75 or 21 if rounded

Answer:

$1,061.21

Step-by-step explanation:

According to the scenario, computation of the given data are as follows,

Present value (PV) = $1,000

Rate of interest compounded yearly (r) = 2%

Time period (n) = 3

So, we can calculate the future value (FV) by using following formula,

Future Value = PV(1 + r)^n

By putting the value, we get

FV = $1,000 ( 1 + 0.02)^3

= $1,000 ( 1.02)^3

= $1,000 ( 1.061208)

= $1,061.21

Answer:

Option C

Step-by-step explanation:

Segment addition postulate states that "if a point Q lies on a segment joining two points A and B, then AQ + BQ = AB"

By this postulate,

AQ + BQ = AB

BP + PC = BC

Since, BP ≅ BQ and PC ≅ QA

Therefore, BP + PC ≅ BQ + QA

BC ≅ AB

Option (C) will be the answer.

Answer:

Segment Addition Postulate

Step-by-step explanation:

I got this answer right

Answer:

Obtuse

Step-by-step explanation:

Has one obtuse angle, i hope this helps you

Answer:

either d or b???