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
Find the total for items costing $149.99 with a sales tax of 5.75%
jek_recluse [69]
141.36 is the answer
5 0
3 years ago
Photography World has a portrait special. A three-pose portrait package has a sitting fee of $35, and a six-pose package has a s
ki77a [65]
We know that a three-pose portrait package has a sitting fee of $35 and <span> a six-pose package has a sitting fee of $60. The total amount they collect is $690.

</span>\text{Therefore, the equation can be} 35x + 60y = 690
6 0
3 years ago
NEED HELP ASAP PLEASE WILL GIVE BRAINLYEST
Tomtit [17]

Answer:

True

Step-by-step explanation:

One is the opposite of the other

8 0
2 years ago
Read 2 more answers
What is the product of 2x + y and 5x – y + 3? x2 + xy + x + y2 + y
miskamm [114]

Answer: 10x^2+3xy+6x-y^2+3y

Step-by-step explanation:

You need to remember the Product of powers property:

(a^m)(a^n)=a^{(m+n)}

Then, knowing this property, now you have to apply the Distributive property. So:

(2x+y)(5x-y+3)=\\\\=(2x)(5x)-(2x)(y)+(2x)(3)+(y)(5x)-(y)(y)+(y)(3)\\\\=10x^2-2xy+6x+5xy-y^2+3y

Finally, to simplify this expression, you need to add the like terms.

Therefore, you get that the product is:

=10x^2+3xy+6x-y^2+3y

3 0
3 years ago
Read 2 more answers
What subtracted by 26 equals -102​
Lesechka [4]

Answer:

-76

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Which statement is true about this argument?
    6·2 answers
  • What is 965 divided by 5
    9·2 answers
  • FAST!!!!
    7·1 answer
  • What is the image of (0,-8) after a reflection over the line y=x
    13·1 answer
  • Let X be the damage incurred (in $) in a certain type of accident during a given year. Possible X values are 0, 1000, 5000, and
    9·1 answer
  • Least common multiple for 40 and 25
    6·1 answer
  • -3(m-2n)=12;c someone please help
    5·1 answer
  • What is an appropriate unit to measure the capacity of hand sanitizer bottle
    15·1 answer
  • 7th time’s a charm I genuinely just want to understand how to do this :( please! If f(x) is a linear function, what is the value
    11·1 answer
  • X+4+3x=72<br> x+4+3x=72<br><br> .
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!