Mathematics High School

Identify the mistake that was made.
2(3x - 9) = 2x + 30
6x + 18 = 2x + 30
-2x -2x
4x + 18 = 30
-18 -18
4x = 12
4 4
x = 3

Answers

Answer 1

the error was they forgot to make 18 a negative

Related Questions

Using the table below, what is Esmeralda's take-home pay?

Answers

Answer:

?

Step-by-step explanation:

we cant anseer inless u give us the question

Answer:

40,260

Step-by-step explanation: cus i said so

4/12 equals how many thirds?
a. 0/3
b. 1/3
c. 2/3
d. 4/3

Answers

Answer:

noshe

Step-by-step explanation:

The answer to the question is B 1/3

What is the formula of the compound formed from Cobalt(lll) and lodine?

Answers

Answer:

Cobalt (III) iodide CoI₃

Step-by-step explanation:

The name of the compound formed between Cobalt(III) and Iodine is known as Cobalt (III) Iodide.

The Iodide ion gains three electrons from the cobaltThey both an electrovalent compound when they react.This compound is soluble in water due to the ionic bonds. Cobalt is a transition metal found in the d- blockIodide is a halogen that belongs to group 7.

I need help with this stupid question, my teacher got me confused when he kept talking about different things!

Answers

Answer:

2 5/8

Step-by-step explanation:

1 3/4 + 7/8

add the fractions together

look for the lcm bwt 4 and 8

1 6 + 7

____

8

= 13/8 = 1 5/8

1 + 1 5/8

= 2 5/8

x−1.2=3 i dont understand this stupid math problem

Answers

Answer: If you have to solve for X the answer is x=4.2

Step-by-step explanation:

Sara and Gordon win some money and share it in the ratio 5:3. Sara gets £30 more than Gordon. How much did Gordon get?

Answers

Answer:

45

Step-by-step explanation:

if Sara has 30 more than Gordon and the ratio is 5:3. then sara has 2× X more than Gordon. 30 ÷ 2 = 15.

15 = X

15 × 3 = 45

Sara has 75

(sorry if it's confusing)

Are the two lines parallel, perpendicular, or neither?
Graph 1
Graph 2
Graph 3
Graph 4

Answers

Answer:

Graph 1: Parallel

Graph 2: Perpendicular

Graph 3: Neither

Graph 4: Neither

Answer:

Graph 1: parallel

Graph 2: Perpendicular

Graph 3: Neither

Graph 4: Neither

Step-by-step explanation:

The ones that are neither would technically be labeled intersecting just for future reference but it is not required in this problem. Hope this helps!

the rational number 9.8 is the best approximation to the tenth of which irrational number?

89 squared
92 squared
96 squared
98 squared

​

Answers

96 squared bc if you square each number that’s the closest after you round it.

89 squared = 9.433
92 squared = 9.591
96 squared = 9.797
98 squared = 9.899

the cost, c(x) for a taxi ride is given by c(x) = 3x + 2.00 where x is the number of minutes.
on a piece of paper, graph c(x) = 3x + 2.00. then determine which answer matches the graph you drew, including the correct axis labels.

Answers

Answer:

C

Step-by-step explanation:

Because its a cost vs minutes graph, and it starts at (0,2) and goes to (1,5)

Answer:A

Step-by-step explanation:

A 50 mile trip uses 2 gallons of gas. How much gas would you use on a 125 mile trip?

Answers

Answer:

5o mile trip=2 gallon

50÷2=25

1 mile trip=25

so 125÷25=5

5 gallon of gas use

Live earns $9.50 for every two bracelets she sells. The equation y=4.75x ,where x represents the number of bracelets and y represent t total cost in dollar earned.represents this situation.what is the constant of prop rationality? What does the constant of proptionality represent in the contexts of the problem?

Answers

Answer:

Price of each bracelet = $4.75

Step-by-step explanation:

Given:

y =4.75x

In equation;

y = kx

where k is constant

So , we say that 4.75 is constant of proportionality

So price of each bracelet = $4.75

What is the equation of a line with a slope of -2 that passes through the point (6, 8)?
O 2x + y = 20
O y-2x = 4
O y-2x = 20
O 2x + y = 4

Answers

Answer:

2x + y = 20

Step-by-step explanation:

gradient = -2

x = 6, y = 8

y - 8 = -2(x - 6)

y - 8 = -2x + 12

2x + y = 12 + 8

2x + y = 20

Answer:

2x + y = 20

Step-by-step explanation:

hope that will help you



At her birthday​ party, Ms. Willow would not give her age directly. She​ said, 'If you add the year of my birth to this​ year, subtract the year of my 25th birthday and the year of my 55th ​birthday, and then add my present​ age, the result is 58​.

Answers

Answer:

69 years

Step-by-step explanation:

Given that:

Let year of birth = x

This year = 2020

Year of 25th birthday = x + 25

Year of 55th birthday = x + 55

Present age = 2020 - x

Hence,

x + 2020 - (x + 25 + x + 55) + (2020 - x) = 58

x + 2020 - (2x + 80) + (2020 - x) = 58

x + 2020 - 2x - 80 + 2020 - x = 58

-2x + 4040 - 80 = 58

-2x + 3960 = 58

-2x = 58 - 3960

-2x = - 3902

x = 1951

Birth year = 1951

,

Hence, age =

2020 - 1951 = 69 years

1+1+1+1+1000+8364+20484923743 - 24762837763

Answers

-427790398 should be your answer

-4,277,904,652 would be the correct answer

Write an equation of the line passing through the points (3,8) and (-2,-22)

Answers

Answer:

y=6x+8 or y=6x-22

Step-by-step explanation:

use the equation y=mx+b

m is the slope and b is the y-intercept

to find the slope use the equation m = y2-y1 over x2-x1

-22 - 8 / -2 - 3 = -30 / -5 = 6

6 is your slope and for the y-intercept you can choose whichever y-intercept to put into the equation.

HOPE THIS HELPS!!

I WILL AWARD BRAINIEST PLEASE HELP

Answers

Answer:

12

Step-by-step explanation:

zeros are the x-intercepts of any function. to find the x-intercept of this given function, we have to set y equal to 0.

0= -1/2x+6

-6=-1/2x

12=x

x=12

the x-intercept is (12,0), meaning 12 is the zero of this function.

Question 7(Multiple Choice Worth 1 points)
(01.05 MC)The total charge on 4 particles is -36 units. All the particles have the same charge.
What is the charge on each particle?
0-9 units
-8 units
08 units
9 units

Answers

Answer:

-9 units

Step-by-step explanation:

[tex] - \frac{36}{4} = - 9 \\ [/tex]

Find the value of x. -2x + 6 = 4(x + 6)

Answers

Answer:

x = -3

Step-by-step explanation:

Answer:

-3

Step-by-step explanation:

To find the value of x, you need to get rid of parentheses! So, 4*x=4x. 6*4=24. Now we have, -2x+6=4x+24. Then we want to get all the x on one side, and the other numbers on the other side. We can add -2x to make it 0, but to make it equal, you need to add it to the other side. So, 4x+2x=6x. You can subtract 24 too! After we do all that, we get: -18=6x. To get x, we need to divide by 6. 6x/6=x. -18/6=-3.

-X/3=9 linear equations

Answers

Answer:

x = -27

Step-by-step explanation:

-x/3 = 9

Multiply each side by -3

x/-3 * -3 = 9*-3

x = -27

See attachment for math work and answer.

Factor and Solve.
x^4+7x^2+10=0

Answers

Answer:

second one

Step-by-step explanation:

Answer:

the second one

Step-by-step explanation:

x^4+7x^2+10=2

use the quadratic formula

hope this helps

brainliest?

x + 2y = 23

A.(15,-4)
B.(-15,4)
C.(15,4)

Answers

Answer:

23

Step-by-step explanation:

232323

3

3

3

3

23

23

3

this isnt correct btw

the answer for this is twenty Three

What is the area, in square centimeters, of the shape below?

Answers

Answer:

21.46 cm squared

Step-by-step explanation:

3.8x5.8=21.46

squareroot of -66 is?

Answers

Answer:

8.1240384 i

Step-by-step explanation:

Answer:

It doesn't have a square root

Step-by-step explanation:

All negative numbers don't have a square root. Because you would have to use a negative and a positive number, and that is not possible when squaring a number. For example, 8² = 64, but what is the square root of -64 there isn't one because if you did -8² = 64. So No Square Root.

One day for 3000 days my dog talked for about 5 1/2 hours. How many hour had my dog talked for.

A. 16500
B. 10000
C. 90
D. 5000

Answers

Answer:

u457sups

Step-by-step explanation:

= 89 - 89b 67 =  80

Answer:

A

Step-by-step explanation:

The different of two numbers is 18
and the difference of six times
the larger number and two times
the smaller number is 156. Find the
two numbers​

Answers

Answer:

Step-by-step explanation:

[

37 and 15

— 3х - 6 +(-1)
Helpp
Can anybody help me?

Answers

Answer:

[tex] - 3x - 5[/tex]

it should be this answer bcause it has been simplified

What’s is the answer for 9-(-3)

Answers

Answer:

negative times A negative is a positive so your answer is 27

Step-by-step explanation:

is the perpendicular bisector of a line a line segment also an angle bisector

Answers

Answer:

no

Step-by-step explanation:

Are these lines parallel,
perpendicular, or neither?
Line 1 passes through (0,3) and (3,1)
Line 2 passes through (-1,4) and (-7,-5)

Answers

Answer - Perpendicular

First, find the slope of each line by using the point slope formula [(y2-y1)/(x2-x1)]. You should get that the slope line 1 is -2/3 and the slope of line 2 is 3/2. Using this, we can conclude that both the lines are perpendicular because their slopes are opposite reciprocals (meaning you flip one fraction and change its sign to get the other fraction).

fastest land animal in the world answers

Answers

Answer:

Cheetah

Step-by-step explanation:

The cheetah or the Acinonyx jubatus can run up to 50 - 80 mph on land

Brainliest?

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