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
Zielflug [23.3K]
3 years ago
15

Explain how to solve 643 = 4x160 +n

Mathematics
2 answers:
BaLLatris [955]3 years ago
7 0
Omg really? Im in Middle School and i never saw anythin like this in Elementary School?????
Charra [1.4K]3 years ago
5 0
First you will have to multiply 4 and 160 which will be 640
then write 640 in the place of 4x160 so you should have 643=640+n
you then will subtract 640 with 640 and they should console out
then subtract 643 with 640 you should get 3 
so your answer should be 3=n
You might be interested in
Write a rule for the nth term of the arithmetic sequence described below.
belka [17]

Answer:

an = 115 + (n - 1) (-6)

a25 = - 29

Step-by-step explanation:

We use the definition for the nth term of an arithmetic sequence:

an = a1 + (n - 1) d

a5 = 91 = a1 + (5 - 1) d

91 = a1 + 4 d

a20 = 1 = a1 + (20 - 1) d = a1 + 19 d

1 = a1 + 19 d

now we subtract term by term one expression from the other

90 = 4 d - 19 d

90 = - 15 d

divide both sides by -15 to isolate d

d = 90 / (-15) = -6

Now we can calculate what a1 is using for example:

1 = a1 + 19 d

1 = a1 - 114

add 114 to both sides:

115 = a1

Then our general expression for the sequence is:

an = 115 + (n - 1) (-6)

We can now use it to calculate the value of a25:

a25 = 115 + (24) * (-6) = -29

7 0
3 years ago
Find the solution set (x,y,z) of the system:<br> 3x-2y+4z=6<br> 2y-3z=20<br> 6z=12
gizmo_the_mogwai [7]

Answer:

The solution is x = 8, y = 13 and z = 2.

Step-by-step explanation:

We are given a system of equations with the variables x, y, and z from which we have to solve for x, y, and z.

The equations are

3x - 2y + 4z = 6 ........ (1)

2y - 3z = 20 .......... (2)

6z = 12 ......... (3)

Now, from equation (3),  we get z = 2.

Now, putting z = 2 in equation (2) we get

2y = 20 + 6 = 26  

⇒ y = 13

Now, from equation (1), putting y = 13 and z = 2, we get  

3x = 6 - (4 × 2) + (2 × 13) = 24

⇒ x = 8

So the solution is x = 8, y = 13 and z = 2. (Answer)

4 0
3 years ago
Can you help me please I pay you £50
trapecia [35]

Answer:

(-3,4), (-3,1), and (-5,1)

7 0
3 years ago
Help please in y= mx + b form
Vera_Pavlovna [14]

Answer:

y= <u>-2</u><u> </u><u>x</u> -8

4

Step-by-step explanation:

-8 is on the y axis

rise over run u rise -2 run to the side 4

5 0
3 years ago
Read 2 more answers
Solve by using the x-intercept method:
Alekssandra [29.7K]

Put into graphing calculator and get B.-5,1,3

8 0
3 years ago
Other questions:
  • Write 2603094 using exponents?
    15·2 answers
  • Which of the sets of ordered pairs represents a function? A = {(−4, 5), (1, −1), (2, −2), (2, 3)} B = {(2, 2), (3, −2), (9, 3),
    14·1 answer
  • What is a rational number that isn't an integer?
    9·1 answer
  • Given the sequence 12, 9, 6, 3,........ where x = 0, 1, 2......,
    7·1 answer
  • Graph ​ 24x+25=−6y+7 ​. Use the line tool and select two points on the line.
    15·2 answers
  • Write the following equation in standard form. 6x2−9x3+33
    11·1 answer
  • HELP
    10·2 answers
  • Plz anyone help for points
    5·1 answer
  • 1. (x - 2) + (3x + 8)
    10·2 answers
  • Solving two step inequalities
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!