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Leona [35]
2 years ago
6

Solve the following system. x-y=2. 3x+z=11. y-2z=-3

Mathematics
1 answer:
dexar [7]2 years ago
5 0
For the 1st one we need to solve x. x-y=2 step1: x-y+y=2+y answer: x=y+2
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in rectangle ABCD, BD and AC are diagonals and intersect at E. If BD = 84 units and AE = 6y, what is the value of y
goldfiish [28.3K]

Answer:

y = 7

Step-by-step explanation:

The diagonals of a rectangle are congruent and bisect each other, then

AC = BD , that is

AE + EC = BD [ AE = EC = 6y ]

6y + 6y = 84

12y = 84 ( divide both sides by 12 )

y = 7

3 0
1 year ago
3x − 6y = –6 x = 2 solve using substitution.
nordsb [41]

Answer:

y=2

Step-by-step explanation:

First, you substitute x with 2.

3(2)-6y=(-6)

Then, you multiply:

6-6y=(-6)

Next, you subtract 6 from -6. So, the first 6 gets crossed out because of inverse of operation.

-6y=-12

Finally, you divide -6 to both sides of the equation to get y=2

3 0
2 years ago
Please help me on this one thx i really need this one.
MrRissso [65]

Answer:

6 meters

Step-by-step explanation:

Every 7 floors, it goes up by 22.4 meter intervals.

Let's count down,

the 7th floor would be 50.8 - 22.4, which is 28.4.

the 0th floor would be 28.4 - 22.4, which is 6.

7 0
2 years ago
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Precious spends $4 on a magazine at a newsstand. When leaving the newsstand, she finds a quarter on the sidewalk. How much money
jeka57 [31]
Well now she has $4.25 lol. She had $4 then, now she has $4.25.
7 0
2 years ago
:))))))))))))))))))))​
8_murik_8 [283]

Answer:

20/5

Step-by-step explanation:

hello I'm confused so yea

4 0
2 years ago
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