Mathematics High School

why do i need the ± sign before the answer? my teacher said it needed to be there but i'm not sure why it has to be or when to use it. can someone pls explain why i need the ± sign? thank u sm

i attached the work i did for the problem, the equation was y = 2/3x^2-5 and i had to find the inverse of it​

Why Do I Need The Sign Before The Answer? My Teacher Said It Needed To Be There But I'm Not Sure Why

Answers

Answer 1

Answer:

THe reason u need the ±  is so that way u know that it is both neg and positive also it helps the teacher grade the work.

Hopefully this helps u out if u need more help pls feel free to text me back

Step-by-step explanation:

Related Questions

Point N is on line segment \overline{MO} MO . Given MN=2x, NO=x-2, and MO = 2x+9, determine the numerical length of \overline{MN}. MN .

Answers

Answer:

22

Step-by-step explanation

Each hour, the number of bacteria in Dr. Nall’s petri dish tripled. What percent is the population compared to the population the hour before?

Answers

Answer: 3x

Step-by-step explanation:

Answer:

im pretty sure is 3%

Step-by-step explanation:

let me know if im right :)

Rewrite in simplest radical form
1
x
−3
6

Answers

1 / (x-3/6)
1 / x-1/2
x1/2

Answer:

To simplify the given radical form, we must recall some properties of exponents as shown below. 1. 1/x⁻ⁿ = xⁿ 2. x¹/² = √x Now, going back to 1/x⁻³/⁶, we have 1/x⁻³/⁶ = x³/⁶ x³/⁶ = x¹/² x¹/² = √x Using the properties provided, we have a simplified form of √x. Answer: √x

Step-by-step explanation:

HURRY PLEASE!!!
It is given that y varies inversely as x varies. If x = 15 and y = 2, what is the value of y when x = 5?

A) 12
B) 6
C) 4
D) 3

Answers

Answer:

b

Step-by-step explanation:

comment if it was correct

A factory produced 247 televisions in 13 hours. How
many televisions did the factory produce each hour?

Answers

Answer:

19

Step-by-step explanation: divide 247 by 13, and you get 19 tvs.

y=-2(x-1)-3
What is the slope intercept form for this?

Answers

Slope intercept form is y=-2x-1


EXPLANATION

when you use distributive property, you get y=-2x+2-3 and when you combine like terms, you get y=-2x-1

(The reason it is +2 instead of -2 is because when you multiply negative by a negative they cancel each other out)

Solve for x. Make sure to show all your work. {9}{x}={2}{6}

Answers

Answer:

Mixed Number: x = 1 1/3

Improper Fraction: x = 12/9

Step-by-step explanation:

9x=2(6)

9x=12

9x/9=12/9

x=1 1/3

Hope this helps.

A local bowling alley charges $4.50 to play one game and $4 to rent one pair of shoes. The expression 4.5g + 4 represents the total cost for you to play g games. How much would it cost you to bowl 4 games?

Answers

Answer:

22$

Step-by-step explanation:

When do u evaluate exponents in the order of operations??
Pls help I got 9 minutes to do this

Answers

Answer: Great more than happy to help!

Exponents come 2nd in line for PEMDAS (order of operations).

Once you finish the parenthesis, you move on to the exponents.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Using the PEMDAS

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

Question 2

1 pts

What is the inverse relation of the function whose equation

is y = 3x – 2?

oy = x

o y = 3x + 2

o y = 2x - 3

x + 2

y =

3

Answers

Answer:

The inverse of the function is;

x = (y + 2)/3

Step-by-step explanation:

Here in this question, we shall be calculating the inverse of a function.

The function is;

y = 3x - 2

Firstly, let w = x;

y = 3w -2

y + 2 = 3w

w = (y + 2)/3

Now replace w by x

x = (y + 2)/3

This is the inverse of the function

Find the value of |5| - 4(32 - 2).

Answers

Answer:

- 115

Step-by-step explanation:

Given

| 5 | - 4(32 - 2)

= 5 - 4(30)

= 5 - 120

= - 115

Answer:

-115

Step-by-step explanation:

5-4(32-2)

(4×30) = 120

5 - 120=

-115

The formula a = m − n represents the actual cost, a, of an item with original price m after a coupon for n dollars off is applied. Solve the formula for the amount of the coupon. Group of answer choices n=a+m n=m−a n = a − m n = −m − a

Answers

Answer: Option B.

Step-by-step explanation:

The given formula is

[tex]a=m-n[/tex]

where,

a = actual cost of an item.

m = Original price

n = Amount of coupon

We need to solve the formula for the amount of the coupon (n).

In means, we need to isolate n in the given formula.

We have,

[tex]a=m-n[/tex]

Subtract m form both sides.

[tex]a-m=m-n-m[/tex]

[tex]a-m=-n[/tex]

Multiply both sides by -1.

[tex]-(a-m)=n[/tex]

[tex]-(a)-(-m)=n[/tex]

[tex]-a+m=n[/tex]

So, [tex]n=m-a[/tex].

Therefore, the correct option is B.

Solve for the variable. Show all work. |6x| - 8 = -8

Answers

Answer:

x = 0

Step-by-step explanation:

|6x| - 8 = -8

Add 8 to each side

|6x| - 8+8 = -8+8

|6x| = 0

Removing the absolute value

6x = 0

Divide by 6

6x/6 = 0/6

x = 0

What is the answer obtained by multiplication

Answers

Answer:

product

Step-by-step explanation:

the answer is called a product

8.7 x 0.45
I keep getting the weonv answer

Answers

3.915 unless you want it as a fraction.

Answer:

3.915

Step-by-step explanation:

Use a calculator.

8.7 × 0.45 = 3.915

If you make $20,000 a year, how much do you make in a month?

Answers

Answer:

1,666. a month on an average

Step-by-step explanation:

Answer:

$1,670 a month (rounded)

Step-by-step explanation:

Simplify the expression.
14x - 2, for x = 7
14x-2

Answers

Answer:

Step-by-step explanation:

14X - 2

14 (7) - 2

98 - 2

96

The value of the expression at x = 7 will be 96.

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given expression is 14x - 2. The value of x is 7. The value of the expression at x =7 will be calculated as:-

E = 14x - 2

E = 14 x 7 - 2

E = 96

Therefore, the value of the expression at x = 7 will be 96.

To know more about an expression follow

brainly.com/question/723406

#SPJ2

4. A BMW convertible travels for 4 hours, by the end the car has driven 120 miles, what was the speed of the BMW? *

Answers

Answer:

           30mph

Step-by-step explanation:

120 diveded by 4=30

Answer: 30

Step-by-step explanation:

120 Divided By 4 = 30 Hope That Helps

True or false 5.020=5.20 please help

Answers

Answer:

False

Step-by-step explanation:

If we remove the last 0 in 5.020, then we have 5.02, which is not equal to 5.20.

Answer: false

Step-by-step explanation:

5.020 less than 5.20

What is 9% of 80? I really need help I’m failing math class

Answers

Answer:

7.2

Step-by-step explanation:

good luck hope it helps

Step-by-step explanation:

To find 9% of 80 you multiply 80 and 0.09(I converted 9% to 0.09).

80x0.09=7.2

Hope it helps!

Solve the following equation for x? -5(1-5x)+5(-8x-2=-4X-8x

Answers

Answer:

-5

Step-by-step explanation:

-5(1-5x)+5(-8x-2) = -4x-8x

-5+25x-40x-10 = -12x

-15-15x = -12x

-15 = -12x + 15x

-15 = 3x

x = -15 ÷ 3

∴x = -5

Please Help!!!!!


Simplify
12x+3 all over (divide) 36x^2-42x


Please show all your work!!

Answers





There is no way to answer this question

what is .253 repeating as a fraction

Answers

.253 as a fraction would be

253/100

What is the value of the expression?

Answers

Answer:

-4

Step-by-step explanation:

Solve for x.
8x = 42 - 32
O x = 8
O x = 4
O r=-4
O = -8

Answers

Are you sure that’s the exact problem?
Because 42-32=10 which means:
8x=10, which further simplifies to 8x/10
⇨ 0.8

It seems the problem was copied incorrectly or made incorrectly imo

The ratio between the number of students (s) on a field trip and the number of teachers (t) on the field trip is 21/4. There are 84 students going on the field trip. How many teachers must go? *

Answers

Answer:

Step-by-step explanation:

If there needs to be 4 teachers per 21 students, you would divide the total amount of students by 21 and multiply that answer by 4. SO...:

84 ÷ 21 = 4 groups of 21 students.

4 groups × 4 teachers = 16

*** Answer***

16 TEACHERS

how to find the slope on a table

Answers

M= y2-y1/x2-x1

Make sure you put it in the form

Hope this helps!!:))

Please solve I need it quick

Answers

Answer:

g(f(x)) = 36[tex]x^{4}[/tex] - 54x² + 12

Step-by-step explanation:

Substitute x = f(x) into g(x) , that is

g(6x²)

= (6x²)² - 9(6x²) + 12

= 36[tex]x^{4}[/tex] - 54x² + 12

Identify square root of 3 as either rational or irrational, and approximate to the tenths place.

Answers

Answer:

Irrational

[tex]\sqrt{3}[/tex] = approx. 1.7

Step-by-step explanation:

The square root of 3 is irrational, because 3 is not a perfect square.

For example, 4 is a perfect square, so the square root (2) will be rational.

The square root of 3 is 1.73205080757,

and we can round this to 1.7 for the tenths place

Simplify each using the distributive property and/or combining like terms:
1.) 4x - 91X + 8)
2.) 6x-4 +2x +9
3.) 8x + 3+ 7xy-2 + x-5xy

Answers

4x - 91x + 8 = -87x + 8
6x - 4 + 2x + 9 = 8x + 5
8x + 3+ 7xy - 2 + x - 5xy = 2xy + 9x + 1
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