Mathematics, 28.03.2020 23:50 carlosbs71

Easy looking math problem but hard

Answers: 1

Show answers

Answers

Answer from: math10030

3.5 + 4.5 = 8

+ +

9.5 - 3.5 = 6

= =

13 8

Step-by-step explanation:

Let us make equations and solve them to find the missing numbers

Assume that the empty square in the 1st row and 1st column is x, the empty square in the 1st row and 2nd column is y

∵ The sum of the two empty squares in the 1st row is 8

∴ x + y = 8 ⇒ (1)

∵ The sum of the empty squares in the 2nd column is also 8

and one of them is y

∴ The empty square in the 2nd row and 2nd column is also x

Assume that the empty square in the 2nd row and 1st column is z

∵ The sum of the empty squares in the 1st column is 13

∴ x + z = 13 ⇒ (2)

∵ The difference between the empty squares in the 2nd row is 6

∴ z - x = 6 ⇒ (3)

Add equations (2) and (3) to eliminate x

∵ (x - x) + (z + z) = (13 + 6)

∴ 2z = 19

- Divide both sides by 2

∴ z = 9.5

Substitute the value of z in equation (2) or (3) to find x

∵ x + 9.5 = 13

- Substitute 9.5 from both sides

∴ x = 3.5

Substitute the value of x in equation (1) to find y

∵ 3.5 + y = 8

- Subtract 3.5 from both sides

∴ y = 4.5

3.5 + 4.5 = 8

+ +

9.5 - 3.5 = 6

= =

13 8

Answer from: misswonderless

3.5 4.5

9.5 3.5

Step-by-step explanation:

The top left box is x

The top right box is y

The bottom left box is z

The bottom right box is n

Across

x+y =8

z-n =6

Down

x+z =13

y+n = 8

Adding

z-n =6

y+n = 8

z+y = 14

Subtracting

x+y =8

-(x+z =13)

y -z = -5

Adding these two new equations together

z+y = 14

y -z = -5

2y = 9

or y = 4.5

Now we can solve for x

x+y = 8

x+4.5 =8

x = 3.5

And solving for z

x+z = 13

3.5 +z =13

z = 9.5

Finally for n

y+n = 8

4.5 +n = 8

n = 3.5

Answer from: Quest

yeah and

step-by-step explanation:

you know what it isnt great cheating

Answer from: Quest

congruent segments

step-by-step explanation:

Another question on Mathematics

Mathematics, 21.06.2019 14:00

Jackie bought a bag of oranges. she used 3/8 of the oranges to make orange juice. she used 1/3 of the oranges to make a fruit salad. she put 1/8 of the oranges in a bowl on the table. she put 2/12 of the oranges in the refrigerator. a) jackie left more oranges on the table than she put in the refrigerator. b) jackie used fewer oranges to make orange juice than she left on the table. c) jackie put fewer oranges in the refrigerator than she used to make the fruit salad. eliminate d) jackie used more oranges to make a fruit salad than she used to make orange juice.

Answers: 1

Answer

Mathematics, 21.06.2019 16:30

Refer to the table below if needed. second quadrant third quadrant fourth quadrant sin(1800- - cos(180° -) tan(180°-e) =- tane cot(1800-0) 10 it to solo 888 sin(180° +c) = - sine cos(180° +) =- cose tan(180° +c) = tane cot(180° +o) = cote sec(180° + c) = - seco csc(180° +2) = - csce sin(360° -) =- sine cos(360° -) = cose tan(360° - e) =- tane cot(360° -) = -cote sec(360° -) = seco csc(360° -) = csco sec(180° -) = csc(180° -) = csca 1991 given that sine = 3/5 and lies in quadrant ii, find the following value. tane

Answers: 2

Answer

Mathematics, 21.06.2019 17:30

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Answers: 3

Answer

Mathematics, 21.06.2019 19:30

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

Answers: 1

Answer

You know the right answer?

Easy looking math problem but hard
...