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
soldier1979 [14.2K]
3 years ago
10

Which one of the following statements expresses a true proportion?

Mathematics
1 answer:
beks73 [17]3 years ago
6 0
Answer: B
Because 3x4=12 and 5x4=20
You might be interested in
Answer this number pattern: Last one. Really need this to be answered!<br> 1,8,27,64_,_,_
Lunna [17]
The numbers to complete the pattern are 125, 216, 343. The complete pattern is 1, 8, 27, 64, 125, 216, 343. Hope this helps.
5 0
3 years ago
30 points
Debora [2.8K]
Well what is 30x3 (because that is how you would find what is one third of unknown) then you find the answer witch is 90$
7 0
3 years ago
Give an example of a function f : N → N that is surjective but not injective. You must explain why your example is surjective an
Helen [10]

Answer:

Consider f: N → N defined by f(0)=0 and f(n)=n-1 for all n>0.

Step-by-step explanation:

First we will prove that f is surjective. Let y∈N be any natural number. Define x as the number x=y+1. Then x∈N, and f(x)=x-1=(y+1)-1=y.  We conclude that f is surjective.

However, f is not injective. Take x1=0 and x2=1. Then x1≠x2 but f(x1)=0 and f(x2)=x2-1=1-1=0. We have shown that there are two natural numbers x1,x2 such that x1≠x2 but f(x1)=f(x2), that is, f is not injective.

Note:

If 0∉N in your definition of natural numbers, the same reasoning works with the function f: N → N defined by f(1)=1 and f(n)=n-1 for all n>1. The only difference is that you consider x1=1, x2=2 for the injectivity.

7 0
3 years ago
Please help!!! Question is below
Lilit [14]

Answer:

A. Obtuse

Step-by-step explanation:

Well we can cross out C and D just by looking at the triangle because the triangle is not equal and there is no right angle.

Also it is not B an acute because not all the angles are acute.

Hence, the answer is A. Obtuse

8 0
4 years ago
Read 2 more answers
Choices: A) 7 B) 12 C) 9 D) 6<br>Please help!!
bonufazy [111]

There are 9 possible combinations, because you can have 3 main dishes, and each of thise have 3 side dishes that can go with them. I hope this helps! Could I possibly get brainliest.

3 0
3 years ago
Read 2 more answers
Other questions:
  • NEED HELP FAST PLEASE<br> Evaluate the limit.<br><br> a.4<br> c.1<br> b.2<br> d.limit does not exist
    5·1 answer
  • to the nearest thousandth what is the cosine of the angle formed by the line whose equation is y=2x and the positive x axis
    14·1 answer
  • What is the solution to : 3(1/2 m - 3) =45
    14·2 answers
  • 2 Points
    5·1 answer
  • Emily's graduation picnic costs $3 for every attendee. At most how many attendees can there be if Emily budgets a total of $18 f
    10·2 answers
  • Joseph drives 125 miles in 2.1 hours. At the same rate, how far will he be able to travel in 6 hours?
    12·1 answer
  • HEEEEEELLPPP PPPLLLZZ T^T
    14·2 answers
  • a company pays its employees and average hourly wage of 36.25 with a standard deviation of 6.50 more than 23.22 of 36 employees
    11·1 answer
  • Can I get help with this please
    15·1 answer
  • I don’t know how to do it please help me
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!