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
UNO [17]
3 years ago
11

What is the first step to prove that 9n - 4n is divisible by 5?

Mathematics
1 answer:
EleoNora [17]3 years ago
3 0

Answer:

Collect like terms, ie do 9n-4n = 5n ...

5n will then be exactly divisible by 5 as 5n / 5 = n

You might be interested in
20 POINTS
denis-greek [22]

Answer:

c. 441ft^2

Step-by-step explanation:

Area is height times length and since it's a square, safe to say that the sides are equal in length. So square root both of the given areas of the 2 square:

\sqrt{841} = 29

\sqrt{400} = 20

Now u have side b and c of the triangle, it's a right triangle so use the Pythagorean theorem a^2 + b^2 = c^2

a^2 + b^2 = c^2

a^2 + 20^2 = 29^2

a^2 + 400 = 841

subtract 4 from both sides

a^2 = 441

square root both sides

\sqrt{a^2} = \sqrt{441}

a = 21

Now the side a of the triangle is also a side of the small square therefore

21^2 = 441

8 0
3 years ago
Describe whether the equation y-3x=7 is a function
Gala2k [10]

y - 3x = 7

can be written as

y = 3x + 7

For every value of x there is a unique value of y.  For example when x = 0 y = 3(0) + 7 = 7

Yes it is a function.

In particular it is a one-to-one function.

8 0
3 years ago
Tyler earned $74 at his job when he worked for 6 hours. What was his hourly pay rate in hours per dollar. HOURS PER DOLLAR NOT D
Andrej [43]

Answer:12.33

Step-by-step explanation:

4 0
3 years ago
Pls Help! It would be very much appreciated, Thx!
Fofino [41]

Answer:

A. 30 two-point questions and 10 four-point questions

Step-by-step explanation:

30 multiplied by 2 equals 60

10 multiplied by 4 equals 40

60 plus 40 equals 100 points which is the amount of points the test is worth as stated i the question.

30 plus 10 equals 40, which is the total amount of questions in the test as stated in the question.

5 0
3 years ago
X+3y=18 3x+9y=12 determine weather the graphs of each pair of equations are parallel, perpendicular, coinciding, or none of thes
MariettaO [177]

The two lines are parallel.

6 0
3 years ago
Other questions:
  • Use a graph to solve the equation <br><br> 7x+3=9x-13<br><br> x=
    8·1 answer
  • Graph x- intercept=4, y- intercept=-3
    7·1 answer
  • Will give BRAINLIEST
    5·2 answers
  • mr henderson mixed 3.732g of chemical A, 13.902 of chemical B and 5.208g of Chemical C to make 3 does of medicine, About how muc
    10·1 answer
  • Write an equation in point slope form for a line with a slope of -3 that passes through (2, -4)​
    9·1 answer
  • Please help with this question
    8·1 answer
  • Help me fast in need it
    9·2 answers
  • How do you write 20/100 as a decimal
    5·2 answers
  • 2. Deon wants to find the perimeter of a square with side length 6m - 3. Write two expressions that represent the perimeter, inc
    8·1 answer
  • Please help I can't understand and my teacher is not explaining properly.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!