All categories

3 years ago

Which pair of numbers is relatively prime?

Mathematics

1 answer:

Kazeer [188]3 years ago

3 0

Answer: C. 625 and 81

Step-by-step explanation: A relatively prime pair is a pair in which in both numbers given, the only number that can go into each number is one. In 112 and 36, we know 2 can evenly go into each number because they both end in a positive number (112/2 is 56 and 36/2 is 18.) This means A is incorrect. As for B, 11 can evenly go into each number, leaving you with 25 and 7. B is incorrect. And then there's D. 5 can go into each number giving you 160 and 19. D is incorrect.

C is correct because the only numbers that can go evenly into 81 is 1, 3, 9, 27, and 81. None of these numbers, except one can go into 625 also.

You might be interested in

50 POINTS AND BRAINLIEST 3. Write an inequality of the form Ax + B ≤ C to represent the word problem using your answers for A, B

lisabon 2012 [21]

Answer:

Step-by-step explanation:

A possible word problem for 3x+10 ≤75 could be

Mat has $75 dollars saved in his wallet and wants to use it for go carts. Knowing that the entrance to the park is $10, and each time around the go cart course is $3 what is the maximum times he can go around?

3x+10 ≤ 75, subtract 10 from both sides

3x ≤ 75-10, divide both sides by 3

x ≤ 65/3

or x ≤ 21.(6)

So it can go around 21 times the most.

4 0

3 years ago

5x+y=-10 4x-7y=-8 Substition Method (Show it step by step please!)

Fynjy0 [20]

$\left\{\begin{array}{ccc}5x+y=-10&|\text{subtract 5x from both sides}\\4x-7y=-8\end{array}\right\\\left\{\begin{array}{ccc}y=-5x-10&|\text{substitute to the second equation}\\4x-7y=-8\end{array}\right\\\\4x-7(-5x-10)=-8\qquad\text{use distributive property}\\\\4x+(-7)(-5x)+(-7)(-10)=-8\\\\4x+35x+70=-8\qquad\text{subtract 70 from both sides}\\\\39x=-78\qquad\text{divide both sides by 39}\\\\\boxed{x=-2}\\\\\text{Put the value of x to the first equation}\\\\y=-5(-2)-10\\\\y=10-10\\\\\boxed{y=0}$

$Answer:\ \boxed{x=-2\ and\ y=0}$

3 0

3 years ago

Read 2 more answers

Sophia is organizing textbooks on her bookshelf. She has an English textbook, a biology textbook, a history textbook, and a writ

ANTONII [103]

Answer:

I believe it's 24 combinations.

Step-by-step explanation:

I found how many there were when starting with English, and there were six. I multiplied this by four (for the four books) and found 24.

Hope this helps! Have a nice day :)

5 0

2 years ago

Read 2 more answers

If the mean of the data set is 35 apples, find the number of apples on the Granny Smith tree,

photoshop1234 [79]

Answer:

can i please have more details please?

Step-by-step explanation:

5 0

2 years ago

Basher collected 4 1/3 basket of peaches and Orchard if each basket holds 21

miv72 [106K]

To do this you times 3 by 4 and add it on to the numerator of the fraction, to turn it into a top heavy fraction:
3*4 = 12
1+12/3 = 13/3

Then you multiply the numerator by 21 to work out what 21 times the fraction is:
13*21/3 = 273/3

Then you can divide 273 by 3 to get the final answer:
273/3 = 91

He will have 91 peaches overall.
Hope this helps! :)

6 0

3 years ago