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expeople1 [14]
3 years ago
13

What is the solution to the system of equations? -3x-y+z=6 -3x-y+3z=0 x-3z=3

Mathematics
1 answer:
valentina_108 [34]3 years ago
4 0

Answer:X/3X=3

We move all terms to the left:

X/3X-(3)=0

Domain of the equation: 3X!=0

X!=0/3

X!=0

X∈R

We multiply all the terms by the denominator

X-3*3X=0

Wy multiply elements

X-9X=0

We add all the numbers together, and all the variables

-8X=0

X=0/-8

X=0

Step-by-step explanation:

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Tucker's Road Paving Company used 646.5 tons of cement to pave 4 miles of roadway. To the nearest hundredth of a ton, how much c
andreev551 [17]

Answer:

161.63 tons

Step-by-step explanation:

Cement used per mile = total cement used / total miles

646.5 tons / 4 = 161.625 tons

161.63 tons to the nearest hundredth

the hundredth is the second number after the decimal place. To convert to the nearest hundredth, look at the number after the hundredth (the thousandth). If the number is greater or equal to 5, add 1 to the hundredth figure. If this is not the case, add zero

the thousandth term is 5, so 1 would be added to 2

3 0
3 years ago
an apple tree grew 8 feet tall to 10 feet tall over the course of a year what is the percentage change in the tree height ASAP P
ikadub [295]

Answer:

25%

Step-by-step explanation:

height grown in a year = 10 - 8 = 2

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5 0
4 years ago
I think #1 is wrong but i can't figure it out​
goldenfox [79]

Answer:

the mistake is x and y x is 6 and y is 4 so it would be 5x6 and 4^2 divide by 2

Step-by-step explanation:

the right one is 5x-y^2 divide 2

                           5x6-4^2 divide 2

                            5x6-16 divide 2

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                                 22

5 0
4 years ago
Which of the following is a solution of the inequality y-5≥8
Viktor [21]

Answer:

See below

Step-by-step explanation:

Given: y-5≥8

Add 5 to both sides: y≥13

So any real number that is equal to 13 or above will be a solution for y.

4 0
3 years ago
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irina [24]

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Step-by-step explanation:

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