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
Gekata [30.6K]
2 years ago
11

Martin can run 1 mile in 7 minutes. What valid proportions can be written from this information? Check all that apply. StartFrac

tion 1 over 7 EndFraction = StartFraction 3 over 21 EndFraction StartFraction 1 over 21 EndFraction = StartFraction 3 over 7 EndFraction StartFraction 7 over 1 EndFraction = StartFraction 3 over 21 EndFraction StartFraction 7 over 1 EndFraction = StartFraction 21 over 3 EndFraction StartFraction 1 over 7 EndFraction = StartFraction 21 over 3 EndFraction

Mathematics
2 answers:
Illusion [34]2 years ago
5 0

Answer:

A and D

Step-by-step explanation:

Tpy6a [65]2 years ago
3 0

Answer:

<u>1/7=3/21</u>

<u>7/1=21/3</u>

the other fractions are not correct/valid therefore the fractions above are the correct answers

Step-by-step explanation:

Let me know if you need any other help:)

You might be interested in
Prove that u(n) is a group under the operation of multiplication modulo n.
katrin2010 [14]

Answer:

The answer is the proof so it is long.

The question doesn't define u(n), but it's not hard to guess.


Group G with operation ∘

For all a and b and c in G:

1) identity: e ∈ G, e∘a = a∘e = a,

2) inverse: a' ∈ G, a∘a' = a'∘a = e,

3) closed: a∘b ∈ G,

4) associative: (a∘b)∘c = a∘(b∘c),

5) (optional) commutative: a∘b = b∘a.


Define group u(n) for n prime is the set of integers 0 < i < n with operation multiplication modulo n.


If n isn't prime, we exclude from the group all integers which share factors with n.


Identity: e = 1. Clearly 1∘a = a∘1 = a. (a is already < n).


Closed: u(n) is closed for n prime. We must show that for all a, b ∈ u(n), the integer product ab is not divisible by n, so that ab ≢ 0 (mod n). Since n is prime, ab ≠ n. Since a < n, b < n, no factors of ab can equal prime n. (If n isn't prime, we already excluded from u(n) all integers sharing factors with n).


Inverse: for all a ∈ u(n), there is a' ∈ u(n) with a∘a' = 1. To find a', we apply Euclid's algorithm and write 1 as a linear combination of n and a. The coefficient of a is a' < n.


Associative and Commutative:

(a∘b)∘c = a∘(b∘c) because (ab)c = a(bc)

a∘b = b∘a because ab = ba.


5 0
2 years ago
Read 2 more answers
What value of n makes this expression equal to 6?<br><br> 3n - (2 + n)
SVEN [57.7K]

Answer:

4

Step-by-step explanation:

3n-2-n=6

2n-2=6

2n=8

n=4

5 0
3 years ago
Read 2 more answers
Evaluate the following expression 30x^2y x=-2/5 y=5/8
meriva
30(-2/5)²(5/8) = 30*(4/25)*(5/8) = 30*4/(5*8) = 3

8 0
2 years ago
Lenny bought a motorcycle. He paid 12.5% in tax. The tax added 1437.50 to the price of the motorcycle what was the price of the
just olya [345]

Answer:

Amount of motorcycle = $11,500

Step-by-step explanation:

Given:

Tax rate = 12.5 % = 0.125

Amount of tax = $1,437.50

Find:

Amount of motorcycle

Computation:

Amount of motorcycle = [Amount of tax ] / Tax rate

Amount of motorcycle = [1,437.50] / 0.125

Amount of motorcycle = $11,500

4 0
2 years ago
Type the correct answer in the box. Use numerals instead of words.<br> -3n^2+147=0
Ber [7]

Answer:

n=7 or n=-7

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • given the linear equation c=30+6y where c is the cost of the dictionary y years after 1904. determine the cost of the dictionary
    12·1 answer
  • El señor Joaquín necesita 20 galones de pintura para pintar una casa .Si cada cubeta tiene 20 litros ¿Cuántas cubetas necesita?
    7·1 answer
  • I need help with the first
    6·1 answer
  • what is the least possible value of the smallest of 99 consecutive positive integers whose sum is a perfect cube
    12·1 answer
  • Use the drawing tools to form the correct answer on the grid.
    9·1 answer
  • Grace made tables of values to solve a system of equations. First, she found that the x-value of the solution was between 0 and
    9·2 answers
  • Find the median of the following data set - 37,41,46,48,56,59​
    11·1 answer
  • Find the Range of the following set of data. (Round to the
    6·1 answer
  • Megan baby-sat this weekend. She earned $12 an hour plus an additional $32. If she made a total of $140, how long did she work?
    5·2 answers
  • Does 30, 40, 45 make a right triangle?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!