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Katen [24]
2 years ago
11

Try to solve the system of equations. Explain the result.

Mathematics
1 answer:
Sauron [17]2 years ago
5 0

Answer:

x = -95, y = 22.75, z = -6.625

Step-by-step explanation:

We start with the line that only has 1 variable, since that's easiest to solve.

2y + 162 = -28

2y = -190

y = -95

Then we go to the line that has 2 variables and substitute y with -95, since that's what y is equal to.

4x -95 = -4

4x = 91

x = 22.75

Then we do the last line with the answers we've gotten so far.

-14(22.75) - 3(-95) + 4z = 7

-318.5 + 285 +4z = 7

4z = -26.5

z = -6.625

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A Write an equivalent equation that does NOT contain decimals.
vampirchik [111]

                                                     <span>0.5x - 0.1 = -2.9

When you multiply each side of an equation by the same number,
you don't change the equation or its solution.  If you want to get rid
of the decimals, you could  multiply each side by  10.  Then the
equation is

                                                     5x - 1  =  -29

You should be able to solve that without help.
But I'm about to take your points, so here's
how to solve that equation:

                                            </span><span><span>5x - 1  =  -29

Add  1  to each side:        5x        =  -28

Divide each side by  5 :     x         =  -28 / 5

Simplify the solution:          x         =  -5 and 4/5 .

Again ... this is the same solution as the original equation
if we hadn't gotten rid of the decimals.

</span></span>
5 0
3 years ago
Write as a numeral 1,000+100+20+1​
never [62]

Answer:

The answer is 1,121.

6 0
3 years ago
Read 2 more answers
Seventh grade
kupik [55]

-5+1+-2+9v+-5v

-3+1+4v

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5 0
2 years ago
A cylindrical basket has a volume of 15 cubic feet. If the height of the basket is 1.5 feet, what is the area of the base of the
Eddi Din [679]

Answer:

10 ft²

Step-by-step explanation:

Recall that the volume of a uniform cylinder may be defined by the formula:

Volume = Base Area x Height

In our case we are given

Volume = 15 ft³ and Base Area = 1.5 ft

Substituting these known values into the formula gives:

Volume = Base Area x Height

15 = Base Area x 1.5

Base Area = 15 / 1.5

Base Area = 10 ft²

7 0
2 years ago
The sum of 2 numbers is 84 if one number is 4.less than the other find the numbers​
artcher [175]

Answer:

one number= x = 44

the other number= (x-4)= 40

Step-by-step explanation:

one number= x

the other number= (x-4)

x + (x-4) = 84

2x= 84+4

2x= 88

x= 88/2= 44

one number= x = 44

the other number= (x-4)= 40

3 0
2 years ago
Read 2 more answers
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