1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexandra [31]
3 years ago
9

Question: When you do adding fractions, do you have to find a common demoniter? *sorry for misspelling*

Mathematics
1 answer:
docker41 [41]3 years ago
5 0

Answer: yes when your adding or subtracting fractions you must find the common denominator between the two before you continue.

Step-by-step explanation:

Example: 2/4+3/2

Find the common denominator. ( in this case the common denominator is 4)

We keep the first fraction as it is cause it has the denominator 4 and we multiply the second fraction by 2 up and down to get a denominator of 4. The equation becomes 2/4+6/4

Now you add the numerators and you got your answer ( don’t forget to simplify)

The answer after adding in this case is 8/4 and when simplified it is 2

You might be interested in
Which expression is equivalent to x ^-5/3
vazorg [7]

Answer:

The second answer choice

Move  

x ^-5 to the denominator

6 0
3 years ago
Can someone solve this???
nalin [4]

Answer:

1. a)x² + y² = 29  ------------------(1)      

y² - x² = 23 ----------------(2)

y²  = 23 + x²

Using the value of y² in the first equation:

<em>x²  + y²  = 29</em>

<em>x²  + (23 + x²)  = 29</em>

<em>2x²  = 6</em>

<em>x² = 3</em>

x = √3

Using the value of x in equation (2)

<em>y²  - x²  = 23 </em>

<em>y²  - 3 = 23</em>

<em>y²  = 26 </em>

<u>y = √26</u>            <u>and</u>            <u>x = √3</u>

<u></u>

<u>b)</u> ( 1 - 12x) / 3 < 0   =   1-12x < 0  =  x > 1 / 12

(1-x) / 2 ≤ (3-x) 3  =  3 - 3x ≤ 6 - 2x  =   -3 ≤ x

In these 2 equations, the value of x will be the values of x common to both the inequalities

Since the second equation starts at a much lower value than the first equation, and they are both going up, all the values for the first equation will also stand for the second equation

Hence, the value of x for the given system of equations is

x  > 1/12

2.

3x² - 7x  + 2 ≥ 0

3x² -6x -1x  + 2 ≥ 0       (splitting the middle term)

3x(x - 2) -(x - 2) ≥ 0

(3x - 1)(x-2) ≥ 0

(3x-1) ≥ 0         or     (x-2) ≥ 0

x ≥ 1/3       or    x ≥ 2

Written above are the 2 solutions for the given equation

4.

We are given that Sin α = (2√3) / 3  or 2/√3

According to the pythagorean law:

<em>sin²α + cos²α = 1</em>

<em>4 / 3  + cos²α = 1</em>

<em>cos²α = (3-4)/3</em>

<em>cos²α = -1/3</em>

cos α = √(-1/3)      or    i / √3    since √-1 is also known as i

<em>Cosec α = 1/ Sin α</em>

<em>Cosec α = 1 / (2/√3)</em>

Cosec α = √3 / 2

<em>Sec α = 1 / cos α</em>

<em>Sec α = 1 /  √(-1/3)</em>

<em>Sec α = (√3)  / (√-1)</em>

Since (√-1) is also known as i , we can write this as:

Sec α = (√3)  / i

<em>Tan α = Sin α / Cos α</em>

<em>Tan α = (2√3 / 3) / (i / √3)</em>

<em>Tan α = (2√3 * √3) / 3 * i)</em>

Tan α = 2 / i

<em>Cot α = 1/Tan α</em>

<em>Cot α = 1 / (2 / i)</em>

Cot α = i / 2

8 0
3 years ago
What is this?<br> Please help
Oksana_A [137]

Answer:

centriod

Step-by-step explanation:

of triiangle

3 0
3 years ago
Read 2 more answers
A small office purchases bottled drinking water. The water comes in containers that hold gallons. Two-thirds of the office conta
Zarrin [17]

Answer:

213.333 ounces

Step-by-step explanation:

A small office purchases bottled drinking water. The water comes in containers that hold 5 gallons. Two-thirds of the office container was drained last week to put out a fire in the wastebasket.

a. How much water (in ounces) is left in the container?

b. How many 12-ounce glasses can be filled with the water that remains in the container

Container = 5 gallons

Two-thirds was drained last week to put out a fire in the wastebasket

That is 2/3 of 5

= 2/3 × 5

= 10 / 3 gallons

Water left in the container = 5 - 10/3

= 15-10/3

= 5/3 gallons

Convert 5/3 gallons to ounces

5/3 gallons = 213.333 ounces

B. Number of 12 ounces glass that can be filled from the water left in the container = 213.333 ounces / 12

= 17.77775

Approximately 18

5 0
3 years ago
Simplify: 2x2 – 1+ 4x2-5
erastova [34]

Answer:

6x^2 - 6

Step-by-step explanation:

Hope this helps!!

8 0
3 years ago
Other questions:
  • What is the answer need help I will put you as brainlyist
    13·1 answer
  • Do you know how to do integer exponents
    10·1 answer
  • PLEASE HELP! See image. Which relation is a function?
    5·1 answer
  • Given the function, g(x)=5x^5/x^3-2x+1, choose the correct horizontal asymptote. none y = 0 y = 1 y = 3
    6·1 answer
  • I do not understand how to solve this. Please can someone explain in a way i can understand.
    8·1 answer
  • Is it true that decimals that are converted to fractions should never be reduced
    5·1 answer
  • What is the slope of the line?<br> Please explain
    14·2 answers
  • Translations
    12·1 answer
  • The product of 2√ 3 and 3√12 in simplified form is .
    13·1 answer
  • Simplify the expression. What classification describes the resulting polynomial? (3x^2-11x-4)-(2x^2-x-6)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!