What is a common denominator for 1/7 and 1/3?

a 18
b 21
c 3
d 4

Answers

Answer 1

Answer:

B. 21

Step-by-step explanation:

The fractions are there to just make the problem seem complicated, but just rewrite it without the fractions.

"What is a common multiple for 7 and 3?"

In this problem it's easy, all you have to do is guess and check.

A: A doesn't work. 7 is not a factor of 18.

B: B works! Both 3 and 7 are factors of 21.

C: C doesn't work. 7 is not a factor of 3.

D: D doesn't work. Neither are a factor of 4.

They only leave us with one solution, B.


Related Questions

There are 86 students and 6 teachers attending the school field trip. Each van holds 16 people. How many vans will be needed to transport all students and teachers?

Answers

Answer: 6 vans

Step-by-step explanation: one of the vans would only have 6 people

Answer:

6 vans! Hope it helps!

Step-by-step explanation:

james rents a photocopier from a company that charges $20 each month plus $0.02 for each copy

Answers

Step-by-step explanation:

What is the question exactly?

If you are trying to create an expression for it, it would be 20+0.02x where x is the amount of copies.

If that's not your question, reply to this answer and I'll try to help you.

Write an inequality for the sentence: the sum of a number and 3 is at least 4. a. N + 3 > 4 b. N + 3 < 4 c. N + 4 > 1 d. N + 4 < 1

Answers

Answer:

a.N+3>4

Step-by-step explanation:

Let N be the number

According to question

Sum of N and 3 is given by

N+3

Atleast means greater than or equal to

At-least 4 means greater than or equal to 4

Therefore,

[tex]N+3\geq 4[/tex]

Hence, the inequality for the given sentence is given by

[tex]N+3\geq 4[/tex]

a.N+3>4

The length of a rectangle is 4 meters less then 3 times the width. The perimeter is 16 meters. Find the width

Answers

Solution :

Given :

Perimeter, P = 16 m

The length is 4 times less then three times the width.

Let the length be l and width be w.

Therefore, according to the equation :

Length, l = 3w -  4  ................(i)

Perimeter, P  = 2(l+w)

                 16 = 2(l+w) ............(ii)

                 16 = 2l + 2w

                  8 = l + w ..............(iii)

Therefore solving equation (i) and (iii)

l = 3w - 4

8 = l + w

We get, w = 3  and l = 5

Answer:

16 divided by 3 = 5.3

Step-by-step explanation:

Solve the equation.
Y/8 =5

Y=?

Answers

the answer is 40. 40 divided by 8 is 5

Answer:

y/8 =5

y/8=5/1

Cross multiply

y/1=5/8

y =40

ΔABC is right-angled at C.If AC=5cm and BC=12cm find the length of AB.​

Answers

Answer:

13

Step-by-step explanation:

This is an application of the pythagorean theorem. Because C is centered at the right angle, AB must be the hypotenuse (I would draw this for you but I don't know how). Thus, we would get sqrt(5^2+12^2)=sqrt(169)=13.

Which of the following equations is the translation 2 units down of the graph of y= Ix ?

a.) y= | x - 2|
b.) y= | x + 2|
c.) y= | x | +2
d.) y= | x | -2

Answers

Answer:

D

Step-by-step explanation:

translation down is just subtracting a number out side the | x |

Lena told her mother that the jeans that she bought were on sale for 10 percent off and she had saved $8.25 on them.

Answers

Answer:

$82.5

Step-by-step explanation:

Step one:

Given that the percent of which is 10% amount to $8.25

We can estimate the of the Jeans as

Step two

Let the cost be x

10 percent of x= 8.25

10/100*x=8.25

0.1x=8.25

Divide both sides by 0.1 to get the value of x

x=8.25/0.1

x=$82.5

The cost of the jeans is

$82.5

Write an equation for the nth term of the arithmetic sequence −15, −33, −51, −69, .... An equation for the nth term of the

Answers

Given:

The arithmetic sequence is −15, −33, −51, −69.

To find:

The nth term of the arithmetic sequence.

Solution:

We have,

−15, −33, −51, −69

Here,

First term: a = -15

Common difference is

[tex]d = -33-(-15)[/tex]

[tex]d = -33+15[/tex]

[tex]d = -18[/tex]

Now, nth term  of an arithmetic sequence is

[tex]a_n=a+(n-1)d[/tex]

Substitute a=-15 and d=-18.

[tex]a_n=-15+(n-1)(-18)[/tex]

[tex]a_n=-15-18n+18[/tex]

[tex]a_n=-18n+3[/tex]

Therefore, the nth term of the given arithmetic sequence is [tex]a_n=-18n+3[/tex].

Colton has 15 muffins. He splits them evenly among b boxes.Write an expression that shows how many muffins are in each box

Answers

Answer:

15÷b=m

Step-by-step explanation:

So if you need to find the answer it could be either 3 boxes and 5 muffins in each bow or 5 boxes with 3 muffins in each box.

I know you didn't ask for the but I thought I should say it just in case.

Please I NEED HELP



Multiply the following polynomials. The solution must be in standard form.
(-2y – 4y2 – 8yº) (-1073 + 5y?)
O 40y6 + 20y5 – 10y3 + 20
O 2046 – 10y4 + 40y3 + 40y
O –20y4 – 10y3 + 40y5 + 40y
O 80y6 – 1073

Answers

9514 1404 393

Answer:

  (d)  80y⁶ -10y³

Step-by-step explanation:

You only need to find the highest-degree term of the product to determine the correct answer choice.

That term is the product of the highest-degree terms of the factors:

  (-8y³)(-10y³) = 80y⁶

This matches choice D only.

Need help with this ASAP ILL LOVE U FOREVER

Answers

Answer:its easy it the first one you had posted

Step-by-step explanation:

Answer:

substitute x for -36 and y for 58

Step-by-step explanation:

system by substitution.
Tar 7x - 3y=8
y=3x

Answers

Answer:

3k

Step-by-step explanation:

jr9rrirjrhr 4irjrirbrurbir rir rir rir her ror ror ir mirror tir tir the ever tir threw tr her rir her r ror rd jenn lwor rope rope mtn 4 ven kr rke the rurr

Determine en donde la funcion dada es creciente,concava hacia riba y concava hacia abajo. y= x3–3x–1

Answers

Answer:

Es creciente en los siguientes intervalos: [tex][-\infty,-1] U [1,\infty][/tex]

Es concavo hacia abajo en el intervalo: [tex][-\infty,0)[/tex]

Es concavo hacia arriba en el intervalo: [tex](0,\infty][/tex]

Step-by-step explanation:

Sea la función:

[tex]f(x)=x^{3}-3x-1[/tex]

Para determinar el intervalo de crecimeinto debes determinar la primer derivada de la función (f'(x)). El intervalo donde f'(x) > 0 es creciente.

La derivada de f(x) es:

[tex]f'(x)=3x^{2}-3[/tex]

Entonces es creciente en los siguientes intervalos:

[tex][-\infty,-1] U [1,\infty][/tex]    

Ahora para determinar la concavidad debemos determinar la segunda derivada de la función (f''(x)). Si f''(x) > 0 la función es concava hacia arriba, si f''(x) < 0 la funcion es concava hacia abajo.

La segunda derivada de f(x) es:

[tex]f''(x)=6x[/tex]        

Por lo tanto:

Es concavo hacia abajo en el intervalo: [tex][-\infty,0)[/tex]

Es concavo hacia arriba en el intervalo: [tex](0,\infty][/tex]

Espero te haya ayudado!

How do I figure out X in this equation URGENT!!!

Answers

2*(X-2+3x+5)=94 cm
4x+3 = 47
4x=44
x=11 cm

Step-by-step explanation:

p = 2(L+W)

98 < 2(x-2cm + 3x+5cm)

98 < 2x - 4 + 6x + 10

98 < 2x + 6x -4 +10

98 < 8x + 6........the inequality

98 - 6 < 8x

92 < 8x

11.5 < x.......the value of x

3. help me asap i’ll give brainliest if it’s right

Answers

Answer:

B it seems like it's the most suitable answer

can someone help with this??
Write the answer in simplest form.

1/9÷2/5=

Answers

Answer:

yes I can

Step-by-step explanation:

1/9÷2/5

=0.011111111111

=1⁄90

A jacket cost $35.50 more than a pair of tennis shoes if the total cost of both items is $161.30 find the cost of each

Answers

Answer:

$62.9 and $98.4

Step-by-step explanation:

Let the cost of tennis shoe be x

Since a jacket cost $35.50 more than a pair of tennis shoe,

Then cost of jacket would be

= $35.50 + x

Total cost of both items would be;

x + $35.50 + x = $161.30

2x = $161.30 - $35.50

2x = $125.8

x = $62.9

Therefore, cost of pair of tennis shoe is $62.9

Jacket cost would now be

= $35.5 + x

= $35.5 + $62.9

= $98.4

Use substitution to solve the system.

X= ?
Y= ?

5x+4y = -10
x = 3y+17

Answers

Answer:

x=3.4

y=-6.75

Step-by-step explanation:

5x+4y=-10  (equation 1 )

-5x+3y=-17  (equation 2)

7y=-27

y=-6.75

substitution (equation 1 ) y=-6.75

5x-27=-10

5x=17

x=3.4

Nina made 14 curtains of the same length out of 30 1/3 yards of fabric. What is the length of the curtain?

Answers

Answer:

2 1/6 yards

Step-by-step explanation:

Nina made 14 curtains of the same length out of 30 1/3 yards of fabric. What is the length of the curtain?

14 curtains = 30 1/3 yards

1 curtain = x yard

Cross Multiply

14 curtains × x yard = 30 1/3 yards × 1 curtain

x yards = 30 1/3 yards × 1 curtain /14 curtains

x yards = 30 1/3 yards /14

x yards = 30 1/3 ÷ 14

x yards = 91/3 × 1/14

x yards = 91/42

x yards = 2 7/42

x yards = 2 1/6 yards

Therefore, the length of the curtain is 2 1/6 yards

23. Which of the following inequalities is correct?

A q>t>p
B p>t>q
C t>p>
D t>q>p

Answers

A I think............

Find the sum of 5x2 - 3x + 2 and 3x2 - 4x - 1. Show all your work!!

Answers

Answer:

5 x ^2  −  3 x  +  2  =  3 x  −  4 x  −  1  =  − x  −  1

Can't explain, cause it will be more confusing.

HELP ME I SWEAR IF I GET ANOTHER "ASK YOUR TEACHER" I WILL EXPLODE

Answers

Answer:

XDDD

Step-by-step explanation:

What is the Perpendicular slope of y=2/5(x)-11

Answers

Answer: 2/5

Step-by-step explanation:

perpendicular to y=2/5x-11 and has a y-intercept of 2. For a line to be perpendicular to another, their slopes must be "negative reciprocal". Therefore we KNOW that the slope is 2/5. also i dont know if you have already solved it but here you go

please can you help me it said I am in high school but I am in middle school but please help.

Answers

Answer:

C. 58.18 mph

Step-by-step explanation:

Answer:

C. 58.18

Step-by-step explanation:

The average speed means we will do miles per hour (mph). So if there are 640 miles for 11 hours the fraction would look like this:

640/11

We want to find the value for 1 hour so we need the bottom number(denominator) to be 1

Therefore we divide by 11 on the numerator and denominator by 11

58.181818(repeating)/1

This means we travel 58.181818... miles per hour.

If we round to the hundredths place we get 58.18 or option C.

Keep in mind that we can do this in ratio form and still get the same answer:

miles: hours

640:11

58.181818:1

Anime weebs please unite please I’m lonely!

So the mods don’t come What’s 2+2?

Answers

Answer:

4 i think

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

So you count to two fingers on one hand and to two on the other one to. Then you put them together. So now you should have counted 4 fingers all together.

XD

Hello!!!!

CAN SOMEONE PLEASE HELP ME???

Answers

Answer:

1

Step-by-step explanation:

you are rising 1 and running 1 so 1/1 equals 1

what's the slope?
PLZ HELP AHH

Answers

Answer:

I think the answer is 2/3

Sweets are sold loose, or pre-packed in 120 g bags.
The 120g bags are £1.49 each.
The loose sweets are £0.89 for 100g.
By calculating the price per gram, determine which is better value.

Answers

Answer:

Step-by-step explanation:To find the better deal divide the price by the weight of each and compare:

1.49 / 120 = 0.012 per gram

0.89/ 100 = 0.0089 per gram

Buying loose is the better deal because the price per gram is smaller

There are some chickens and pigs in a farm. If you count the number of heads, you get 80 heads. If you count the number of feet, you get 254 feet. How many chickens and how many pigs are there?

Answers

Step-by-step explanation:

Let's assume that x = number of chickens and y = number of pigs.

[tex]80 \: heads = x + y[/tex]

Since there are 4 feet for pigs and 2 feet for chickens:

[tex]254 \: feet = 2x + 4y[/tex]

By substitution, let's rearrange the first equation:

[tex]x = 80 - y[/tex]

Substituting this equation to the second one:

[tex]254 = 2(80 - y) + 4y \\ 254 = 160 - 2y + 4y \\ 254 - 160 = 2y \\ 94 = 2y \\ y = 47 \: pigs[/tex]

Since we found the number of pigs already, let's substitute the value to any of the equations.

[tex]80 = x + y \\ 80 = x + 47 \\ 80 - 47= x \\ x = 33 \: chickens[/tex]

There are 32 chickens and 48 pigs.

To check if 3e are correct, let's use the second equation:

[tex]254 = 2x + 4y \\ 254 = 2(33) + 4(47) \\ 254 = 66 + 188 \\ 254 = 254[/tex]

Therefore, the values we found are correct.

Other Questions
Help I gotta minute left! If the ratio of m to n is equal to 5 then which of the following is true? (1) m=n+5 (2) m=5n (3) n==m+5 (4) n=5m What is the name of an ionic compound with a negative oxide ion and a positive iron ion? (Really need this answered asap!) Start at (10, 10). Move 5 units left and 5 units up. Where do you end up? What would it cost an insurance company to replace a family's personal property that originally cost $42,000 Question 2 of 5Select the word that offers the best antonym for wan.Before Carlos entered the haunted house, he was the picture ofconfidence: the cocky strut, the flushed cheeks, and cheerful grin.When he emerged, though, he was completely unrecognizable. Hesported a grim frown and was completely wan, all the color havingdrained from his face by the time he appeared stiff-legged at thebuilding's exitO A. unrecognizableO B. grimO c. cheerfulD. flushed What is the rate of this answer ?? C'est moi ___ la table.Je suis _______ mon amie Julie. Et nous voici ___ l'cole! Je suis _____ la table. a, c'est mon amie Sophie _____ chapeau. C'est son frre ________ elle. Il regarde _____ la fentre. Can somebody pls help me with this Spanish Brett wants to join the football team next yelr. He has heard that taking supplements might help him build muscleand body mass, which might improve his chances of making the team. Brett wants to decide if he will takesupplements or not.What should Brett do next?O identify and define the decisionO find reliable sources for various optionsO identify and evaluate the consequencesO assess the outcome of his decisionok You feel you need to make impressions per day with 5,000 people and get about 50 clicks per day to get your business going. FacePage/InstaPic charges about $0.01 per impression and $2 per click. Expand the expression 11(3c2d) using the Distributive Property. 1/4+(2x5)please answer Andrea works as a cashier in a music store. A customer wants to buy a CD that ison sale for 15% off the regular price of $14.00. This means she will pay 85% of$14.00. How much will Andrea pay? Read the excerpt from The Secret Garden. She put her hand accidentally upon the tapestry near her, and then sprang back, feeling quite startled. The tapestry was the covering of a door which fell open and showed her that there was another part of the corridor behind it, and Mrs. Med-lock was coming up it with her bunch of keys in her hand and a very cross look on her face. What are you doing here? she said, and she took Mary by the arm and pulled her away. What did I tell you? I turned round the wrong corner, explained Mary. I didnt know which way to go and I heard someone crying. She quite hated Mrs. Medlock at the moment, but she hated her more the next. You didnt hear anything of the sort, said the housekeeper. You come along back to your own nursery or Ill box your ears. And she took her by the arm and half pushed, half pulled her up one passage and down another until she pushed her in at the door of her own room. Now, she said, you stay where youre told to stay or youll find yourself locked up. The master had better get you a governess, same as he said he would. Youre one that needs someone to look sharp after you. Ive got enough to do. She went out of the room and slammed the door after her, and Mary went and sat on the hearth-rug, pale with rage. She did not cry, but ground her teeth. There was someone cryingthere wasthere was! she said to herself. She had heard it twice now, and sometime she would find out. She had found out a great deal this morning. She felt as if she had been on a long journey, and at any rate she had had something to amuse her all the time, and she had played with the ivory elephants and had seen the gray mouse and its babies in their nest in the velvet cushion. Which evidence best supports the idea that Mrs. Medlock is hiding something from Mary? "'You didn't hear anything of the sort...'" "'She went out of the room and slammed the door after her...'" "'Youre one that needs someone to look sharp after you. Ive got enough to do.'" Someone pls help me Ill mark u brainliest Pls be honest Ill mark u Does your shadow grow bigger when the sun is in front of you or behind you A simple computer has a main memory and a disk but not a cache. If a referenced word is in main memory, 90ns are required to access it. If it is on disk but not in main memory, 10ms are needed to load it into main memory (this includes the time to originally check the main memory), and then reference is started again. The main memory hit ratio is 0.8. What is the average time in ns required to access a referenced word on this system Lily sorted these solid figures into two groups. What is true about the groups