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
galben [10]
3 years ago
7

I need the answers for 6,7,8,9,10,11 pls fast

Mathematics
1 answer:
Natalka [10]3 years ago
8 0

Answer:

6) common denominator = 54

7) common denominator = 80

8) common denominator = 108

9) least common denominator = 10

10) least common denominator = 24

11) common denominator = 21


Step-by-step explanation:

6) common denominator of 1/6 , 1/9

example: A/B where A is de numerator and B is the denominator.

common denominators are numbers that have te same composition

1/6 , 1/9 ⇒ if we want to add this fractions we need to find the common denominator.

therefore: (1/6)*(9/9) , (1/9)*(6/6) ⇒ ((1*9)/(6*9)) . ((1*6)/(9*6)) ⇒ 9/54 , 6/54

the common denominator is 54

7) 3/8 , 3/10

(3*10)/(8*10) , (3*8)/(10*8) ⇒ 30/80 , 24/80

common denominator of this two fractions is 80

Note: We can see that the common denominator can be find just by multiplying the denominators. in 7) 6*9=54 and in 8) 10*8=80. This is because in this cases we are asked just for the common denominator

9) 1/9 , 5/12 ⇒ common denominator = 9*12 = 108

10) Least common denominator of 2/5 , 1/10

in this case is the smmallest number that the denominator have in common:

first, from 2/5: denominator=5

multiples of 5: ⇒5, 10, 15, .........

then from 1/10: denominator=10

multiples of 10 ⇒ 10, 20, 30,....

The least common denominator is the smalles number this two denominators have in common. We can see that this number is 10.

There are other ways because you should also think of it as the minimun common denominator. 5 =5*1 and  10 = 2*5 (minimun expresions)

the least minimun denominator willbe the one that includes all de numbers included in their minimum expresion without making it doble (just the amount of times to make the denominator number in each fraction).

therefore we would know that the least common denominator in this fractions is: 1*2*5 = 2*5 = 10

But just have fun and make it simple

10. least common denominator for: 5/6 , 3/8

first: 5/6 ⇒ denominator: 6, so ⇒ 6, 12, 18, 24, 30, 36.....

then: 3/8 ⇒ denominator: 8, so ⇒ 8, 16, 24. 32, 40....

least common denominator for this fractions is ⇒24

or also:

5/6 ⇒ denominator is 6 ⇒ 6=2*3

3/8 ⇒ denominator is 8 ⇒ 8=2*2*2

least common denominator for this fractions is ⇒ 2*2*2*3 =24

11. common denominator of: 1/3 , 2/7

because in this case 3 and 7 are in their minimum expresion ⇔ 3=1*3 & 7=1*7

we can jus find the common denominator by multiplying both denominators:

7*3=21

Hope it helps.

You might be interested in
Solve by factoring: x2 – 9x + 20 = 0
gayaneshka [121]

Answer:

Answer

Given equation is:

x

2

−9x+20=0

⇒x

2

−5x−4x+20=0

⇒(x−4)(x−5)=0

⇒x=4andx=5

3 0
3 years ago
Read 2 more answers
Alica has 32 stickers .this is 4 times as many as benita has .how many sticker does benita have?
Lelechka [254]
Work out 32 times by 4
4 0
3 years ago
Read 2 more answers
The graph shows the function f(x) = (2.5)x was horizontally translated left by a value of h to get the function g(x) = (2.5)x–h.
ziro4ka [17]

Answer:

-2

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Why are online payments services necessary
Semenov [28]

In this digital age, online payment services are added services that will make bill payments easier. Online stores and businesses have cropped up and their market is worldwide. To facilitate easy exchange of goods and services, online payment services are offered. Online payment services benefit both the seller and the buyer. They buyer no longer need to go to a physical office to deposit his payment, all he has to do is lodge his debit or credit card to pay his bills or online purchases. Sellers also benefit from these services because he'll know that his buyers are not bogus and online payments are real-time transactions. Thus, making payment tracking easier for documentation purposes.


Can you mark me brainlest?


5 0
3 years ago
Read 2 more answers
Estimate a 10% tip on a bill of $179.54 by first rounding the bill amount to the nearest ten dollars.
lawyer [7]

Answer:

Step-by-step explanation:

First we start off by rounding that number to the nearest ten, not tenTH. This rounding would lead to 180$. Now comes the percent part. Here i use the percent equation, which is ____ is ____% of _____. our percent is 10%, and our whole goes at the end, 180$. The part( or the tax), becomes x, and now we translate. Is means = and of means times. so x=.10(180), and x will equal 18

so the tip will be around 18 dollars

hope it helped

7 0
3 years ago
Other questions:
  • Factor the GCF: −6x4y5 − 15x3y2 + 9x2y3
    10·1 answer
  • The base angle of an isosceles triangle measures 54 degrees. What is the measure of its vertex angle? A) 27degrees B) 36 degrees
    15·1 answer
  • Angie read 3 books in 5 days, and each book contained 335 pages. If Angie read the same number of pages each day, how many pages
    15·2 answers
  • A cylindrical package to be sent by a postal service can have a maximum combined length and girth (perimeter of a cross section)
    8·1 answer
  • Expand the following : 2( x-1)
    8·2 answers
  • Plz help on rationalising surds
    7·1 answer
  • Need help for one question for geometry !
    14·1 answer
  • I need help with answering this equation
    7·2 answers
  • Find the first 4 terms of:<br> Σ ()<br> N=1<br> (9 n - 6).<br> Help please
    5·1 answer
  • Roughly 75% of students take the bus to school. If you were to ask 9 students in your class, what is the probability that at mos
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!