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
Archy [21]
2 years ago
6

What expression must the center cell of the table below contain so that the sums of each row, each column, and each diagonal are

equivalent?
  x       8x      -3x
-2x      ?        6x
7x      -4x       3x
Mathematics
1 answer:
sergey [27]2 years ago
5 0
Oh, I adore magic squares!

We need all rows to be equivalent, so try adding up the bottom (complete) row to get 7x-4x+3x=10x-4x=6x.

To solve the middle number, we have -2x+X+6x=6x, so X=2x.
To solve the top number, we have X+8x-3x=6x, so X=6x-8x+3x=x

Now check first column, 
x-2x+7x=6x   ok
Second column
8x+2x-4x=6x  ok
Top-right to bottom-right diagonal: x+2x+3x=6x, ok   
Bottom-left to top right diagonal: 7x+2x-3x=6x

So everything is ok!
You might be interested in
What is perimeter? What is area? How can you find the perimeters and areas of triangles, parallelograms, rectangles, squares, an
marusya05 [52]
The perimeter of a figure is the total distance around the edge of the figure. The area of a flat, or plane figure is the number of unit squares that can be contained within it. The unit square is usually some standard unit, like a square foot or a square inch. I don't really know the rest but I did the first two lol
3 0
3 years ago
Find the first three terms of the sequence below.<br> T, = n2 + 2n +9
NikAS [45]

Answer:

12, 17, 24

Step-by-step explanation:

To find the first 3 terms, substitute n = 1, 2, 3 into the rule, that is

T₁ = 1² + 2(1) + 9 = 1 + 2 + 9 = 12

T₂ = 2² + 2(2) + 9 = 4 + 4 + 9 = 17

T₃ = 3² + 2(3) + 9 = 9 + 6 + 9 = 24

7 0
2 years ago
Read 2 more answers
What is the decimal form of 63/100
finlep [7]

Answer:

0.63

Step-by-step explanation:

63 divided by 100 on a calculator would get you the answer.

8 0
3 years ago
Read 2 more answers
A machine pumps 2.1 gallons of water every 1.6 minutes. How many gallons is pumped per minutes?
maks197457 [2]

Answer:  1.3125 gallons

Step-by-step explanation: The machine pumps 2.1 gallons of water every 1.6 minutes. 1.6 minutes is 1.6x more than 1 minute. So, we have to divide 1.6 by 1.6. Next, we have to divide 2.1 by 1.6. We can make this a bit easier by multiplying both of them by 10 to get 21/16 which is 1.3125.

4 0
1 year ago
Read 2 more answers
Help me for 10 points
iogann1982 [59]

Answer: 4/8 + 7/8 = 11/8

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • 28 is what % of 20<br><br> 28 is ___% of 20
    10·1 answer
  • Select TWO inequalities that have the set (-1.84, -0.57, 0.2, 1.67) as possible solutions for m. Looking for brainliest.
    14·1 answer
  • The Luxor hotel, in Las Vegas, is a square pyramid with lateral faces consisting of black, glassed mirrored panes. The building
    10·1 answer
  • What’s 640,409,210 in expanded form
    15·1 answer
  • Write the fraction as a product of a whole number 6/10
    13·1 answer
  • State if the triangles in each pair are similar. If so, state how you know they are similar
    5·1 answer
  • 20 points!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    15·1 answer
  • Write the equation of the blue line using slope intercept form (y=mx+b)
    10·1 answer
  • Y^2+8y+2 y=-5 evaluate the expression
    12·1 answer
  • 10) Chris invested $5,500. The investment had a simple interest rate of 3.5%. If he plans to leave the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!