Mathematics High School

solve. 2x-5=8x+7-x

it's number 4 on the picture
​

Solve. 2x-5=8x+7-x It's Number 4 On The Picture

Answers

Answer 1

Answer:

x = -12/5

Step-by-step explanation:

hope this helps you

Related Questions

f(-2) when f(x)=25x-4​

Answers

Answer:

25x4 - 2

Step-by-step explanation:

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check :  25  is the square of  5

Check : 2 is not a square !!

Talia bought an MP3 player for $150.00. What amount of sales tax must she pay if the sales tax rate is 6%?

Answers

Answer:

OK so I'm not that good at math but the answer should be.. $175?

Step-by-step explanation:

I  don't know if that's right answer or not so... :/

David wants to determined the number of students in his school who like Brussels sprouts. What is the population of David's study?

Answers

Answer:

Answer is all of the students in David's school.

Step-by-step explanation:

I hope it's helpful!

Answer:

All the students in his school.

Step-by-step explanation:

The population would be all of the kids in his school because he has to ask every person to get accurate results.

In which quadrant, or on which axis, does the terminal side of angle 540° lie?

Your answer:
A. Q II
B. QIII
C. Quadrantal angle / positive x-axis
D. Quadrantal angle / negative x-axis

Answers

The answer is D. Because since the angle is positive so this angle is counterclockwise and the terminal side of the angle lies on the negative X axis

Sam's mother is twice as old as Sam. In 12 years, Sam will be as old as his mother was 12 years ago. How old are Sam and his mother now?

Answers

Answer:

Sam is 24 years old and his mother is 48 years old.

Step-by-step explanation:

Equations

Let's call

x   = Sam's current age

Since Sam's mother is twice as old as Sam:

2x = Sam's mother current age

x + 12 = Sam's age in 12 years

2x - 12 = Sam's mother age 12 years ago

These two last expressions are equal:

x + 12 = 2x - 12

Subtracting x and adding 12:

x = 24

2x = 48

Sam is 24 years old and his mother is 48 years old.

Sam, is 24 years old. His mom is 48 years old.

what is the value of V9/16

Answers

Answer:

oop here ya go

Step-by-step explanation:

PLEASE PLEASE HELP ME!!

Answers

Answer:

C. BC ≅ EC

hopes this helps :)

Answer:

Line AC is congruent to line DC (top answer)

Step-by-step explanation:

If a point is a midpoint of a line, then each half of the line (AC and DC in this case) is equal

What is sin B = 0.5592?

Answers

Answer:

sin(30°) = 0.5

sin(30°) is exactly: 1/2

Note: angle unit is set to degrees.

Step-by-step explanation:

please help with geometry

Answers

Step-by-step explanation:

the answer is:

x=180-90-70=20°

Need help ON THESE TOO PLEASE WILL MARK BRAINLY

Answers

Answer:

1)

angle 2WZX = angle ZYX ( Since all angles and sides of a rhombus are equal)

ZYX = 2 x 29.5

59

2)

4x - 10 =90 (since all angles of a rhombus intersect at 90°)

x=90+10/4

x=100/4

x=25

hope this helps

All factors pairs of 20?


Answers

1 x 20

2 x 10

4 x 5    (these go the other way round as well, like 10 x 2, etc)

all factors of 20 = 1,2,4,5,10,20

hope this helps!

The factors of 20 are the numbers, which produce the result as 20 when a pair of factors are multiplied together. These factors are 1,2,4,5,10 and 20.

Please help ;-;

Jaxon measured a line to be 5.7 inches long. If the actual length of the line is 5.3 inches, then what was the percent error of the measurement, to the nearest tenth of a percent?​

Answers

Answer:

7.5

Step-by-step explanation:

Percent Error =  

Vobserved - Vtrue

Vtrue

=  

5.7 - 5.3

5.3

=  

0.4

5.3

=  7.5471698113208%

Answer:7.5

Step-by-step explanation:

Why is having a long credit history with a few blemishes that were corrected better than a short history that is clear?

Answers

A long history with corrected blemishes exhibits that though mistakes were made, they were corrected which allows for those viewing your credit history to know that you've learned to fix mistakes making you trustworthy and experienced.

Answer:

A long history with corrected blemishes exhibits that though mistakes were made, they were corrected which allows for those viewing your credit history to know that you've learned to fix mistakes making you trustworthy and experienced.

Step-by-step explanation:

edge 2022

6% of x = 600. Find the value of x.​

Answers

Answer:

36%

Step-by-step explanation:

x = 600, so you need to find 6% of 600, which is 36%

:)

Answer:

36

Step-by-step explanation:

What is the relationship between A and B

Answers

Answer:

vertical angles

Step-by-step explanation:

vertical angles is the angles opposite each other when two lines across

Evaluate 27x squared - 42x + 12

Answers

The answer is -42x+741.

IM 6 grader I need help on this plzzz

Answers

Answer:

A reflection over the y-axis

Step-by-step explanation:

You win an online auction for a toy. Your winning bid of $90 is 75% of your maximum bid. How much more were you willing to pay for the toy than you actually paid?

Answers

75% = 75/100 = 0.75

Let your bid = b
b * 0.75 = 90

Divide by 0.75
90/0.75 = 120

Check:
120 * 0.75 = 90 :)

I could have paid $30 more dollars for the toy than I actually paid.

What is the percentage?

A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.

Given, You win an online auction for a toy and your winning bid of $90 is 75% of your maximum bid.

Assuming 'x' is the maximum amount I could have paid for the bid.

Therefore, 75% of 'x' is $90 which is,

(75/100)×x = 90.

0.75x = 90.

x = 90/0.75.

x = 120.

So, The amount of more money I could have actually paid is,

(120 - 90)

= $30.

learn more about percentages here :

https://brainly.com/question/24159063

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A rental car company offers a rental package for a mid-size car. The cost is comprised of a fixed $40 administrative fee for the cleaning and maintenance of the car plus a rental cost of $45 per day. Using x for the number of days and y for the total cost in dollars, construct a linear function to model the relationship between the number of days and the total cost of renting a mid-size car.

Answers

Answer:

y=45x+40

Step-by-step explanation:

HELP PLEASE 20POINTS FOR BOTH !!!!!!

Answers

I am having trouble with math to don’t worry

can you help

Ms. Ganchero wonders if there is an association between the number of absences a student has in her class and the grade they earn at the end of the quarter. In order to analyze this relationship, Ms. Ganchero created the scatter plot below. Use this information to answer questions 1-4.

4) Which of the following apply to the data? (Select all that apply)


Positive Association

Negative Association

No Association

Nonlinear Association

Strong Linear Association

Weak Linear Association

Answers

Positive if I looked at graph correctly

Write the set of coordinates for a reflection of the figure over
the x-axis.
(1, 2) (1,5) (5, 2) (5,5)


Which answer is correct?

Answers

Answer:

C. (1, -2) (1, -5) (5, -2) (5, -5)

Step-by-step explanation:

The rule for reflection over the x-axis:

(x, y) → (x, -y)

Apply the rule to the given points:

(1, 2) → (1, -2), (1, 5) → (1, -5), (5, 2) → (5, -2), (5, 5) → (5, -5)

Correct option is C.

Answer:

Correct answer is

option c

Marty paid $72 for a jacket that had been marked down 20%. Calculate the original price of the jacket.

Answers

Answer:

The original price was $90.

Step-by-step explanation:

Let j represent the original price.  Then, subtract 20% from 100%, obtaining 80%.  The markdown price is 80% of j, or 0.80j = $72

Solving for j, we get j = $72/0.80 = $90

Answer:

86.40

Step-by-step explanation:

86.4 rand 72 plus 14.4 equals 86.40

What are the measures of Angles d, e, and f? Show your work and explain your answers. (10 points)

Part A - Find the measure of angle d showing all work and reasoning. (3 points)

Part B - Find the measure of angle e showing all work and reasoning. (3 points)

Part C - Find the measure of angle f showing all work and reasoning. (3 points)

Part D - What does the box mean in the triangle with angles e and d? (1 point)

Answers

Answer:

Part A - Angle d is 29º

Part B - Angle e is 61º

Part C - Angle f is 95º

Part D - the box represents a 90º angle

Step-by-step explanation:

Angle d is 29º because of the vertical angles theorem

Angle e is 61º because if you take into account that it tells you one of the angles is 90º, you'll add d, which is 29º, to that in order to get 119. Then you'll subtract 119 from 180, as all the angles in a triangle must have a sum of 180º degrees. The result should be 61º

Although it looks rather acute, f should be 95 degrees because it's a supplementary angle with 85º, meaning you subtract 85 from 180

The box in the triangle is just a symbol indicating a 90º angle

Round 7.408 to the nearest thousand​

Answers

Answer:

The answer is 7000

Step-by-step explanation:

PLEASE MARK BRAINLIEST

what is the area of a rectangle with a length of 21 feet and a width of 12 feet?

Answers

area = length x width
21 x 12 = 252
area = 252

HELP ASAP!!! WHICH EQUATION FITS THE PATTERN IN THE TABLE HOW DO YOU GO FROM 1 TO 22

Answers

Answer:

I believe its "the value of y is 21 more tha the value of x, equation is y= x+21"

Step-by-step explanation:

if Anna can run 2km in 8 min, how long will it take her to run 5 km if she maintains her speed​

Answers

Answer:

20 minutes

Step-by-step explanation:

Find the speed per km. 2km/8min. This is 4 minutes per km.

Next, multiply the minutes per km by km. 4 min x 5 km.

This equals 20 :)

$3 is what percent of $10?

Answers

30%, have an nice day. Brainliest please?

The value of $3 is 30% of the number $10.

The percentage is a way to express a proportion or a fraction as a fraction of 100. It is commonly used to compare values or quantities relative to a whole or a total.

The term "percentage" comes from the Latin word "per centum," which means "per hundred." It implies that a percentage value represents a certain number out of 100 parts.

To calculate a percentage, you typically divide a part or a quantity by the whole or the total and then multiply the result by 100. The resulting value represents the percentage equivalent of the part or quantity.

The per cent value is calculated as,

[tex]x = \dfrac{3} {10} \times100\\x = 0.3\times100\\x = 30 \%[/tex]

Therefore, the percentage value is 30%.

To know more about the percentage follow

https://brainly.com/question/14230790

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A sporting goods store is selling all their exercise equipment for 30% off.
The regular price for an exercise bicycle is $260. The regular price for a set of hand weights is $120.
Part A
Find 70,5,50,10? of the cost of the exercise bicycle. Multiply that amount by 30,260,3,10? to find 30% of the cost. Then x,/,-,+ the regular price to find the sale price.
Use your answers from Part A to find the sale price for the exercise bicycle. Enter your answer in the box.
___________

What is the sale price of the hand weights?
A.114
B.36
C.84
D. 380

Answers

Answer:

c. 84

Step-by-step explanation:

120 times .70 = 84

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