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Ray Of Light [21]
2 years ago
9

3x+4y+z=-2 2y+3z=-8 z=-3

Mathematics
2 answers:
Naya [18.7K]2 years ago
7 0

Answer:

y = 1/2

x = -1 / 3

z = -3

Step-by-step explanation:

In this question, in order to find "y" and "x", we do the following...

Since we know z = -3 we can find "y" by substituting z in the second equation.

2y + 3z = -8

2y + 3(-3) = -8

2y - 9 = -8

2y = 1

y = 1/2

Now we know "y" and "z" and so we can find x...

3x + 4y + z = -2

3x + 4(1/2) - 3 = -2

3x + 2 - 3 = -2

3x = -1

x = -1 / 3

masya89 [10]2 years ago
3 0

Answer:

z=-3 so 2y+3(-3)=-8, 2y-9=-8, add 9 to both sides 2y=1 divide both sides by 2, y=1/2, so 3x+4(1/2)+-3=-2, 3x+2-3=-2, 3x-1=-2, add 1 to both sides, 3x=-1, divide both sides by 3, x=-1/3

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8 0
3 years ago
A ship travels 62.5 km in 1st hour of sailing. Starting from 2nd hour, the distance travelled per hour is x% of that in the prec
Bas_tet [7]
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is 4th hour its is the above * x/100 again  so we can now form the equation

62.5x      x          x
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5 0
3 years ago
Given uv = su tu sv prove vt = st
Lady bird [3.3K]

Answer:  see proof below

<u>Step-by-step explanation:</u>

\begin{array}{cl|cl}&\underline{\text{Statement}}&&\underline{\text{Reason}}\\1.&TU\perp SV&1.&\text{Given}\\2.&\angle TUV = 90^o&2.&\text{De finition of Perpendicular angles}\\&\angle TUS = 90^o&&\\3.&\angle TUV=\angle TUS&3.&\text{Transitive Property}\\4.&UV=US&4.&\text{Given}\\5.&TU=TU &5.&\text{Reflexive Property}\\6.&\triangle TUV = \triangle TUS&6.&\text{SAS Congruency Theorem}\\7.&VT=ST&7.&CPCTC\end{array}

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slega [8]

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Step-by-step explanation:

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7 0
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Answer:

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Step-by-step explanation:


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