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3 years ago

What is 3x+2x+6=-18

Mathematics

2 answers:

maksim [4K]3 years ago

6 0

Answer:

x = -4.8

Step-by-step explanation:

combine like terms

3x + 2x + 6 = -18

5x + 6 = -18

isolate the terms with the x variable

5x + 6 - 6 = -18 - 6

5x = -24

isolate x

5x/5 = -24/5

x = -4.8

gregori [183]3 years ago

6 0

Answer:

EXACT FORM: x = -24/5

DECIMAL FORM: x = -4.8

MIXED NUMBER FORM: x = -4 4/5

I hope this helped you!!

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2 years ago

Which system of linear inequalities is represented by the graph?

pentagon [3]

Answer:

Option D- y > x – 2 and y < x + 1

Step-by-step explanation:

To determine : Which system of linear inequalities is represented by the graph?

Solution : First we examine the graph

The shaded region in purple is drawn using two line

The first line above the origin passing through the points (0,1) and (-1,0)

The equation of line passing through two points is $y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

$y-1=\frac{0-1}{-1-0}(x-0)$

$y-1=x$

So, the equation of that line $y = x + 1$

The second line below the origin passing through the points (0,-2) and (2,0)

The equation of line passing through two points is $y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

$y-(-2)=\frac{0-(-2)}{2-0}(x-0)$

$y+2=x$

So, the equation of that line $y=x-2$

Now, to check the system of inequality substitute point (x,y)=(0,0)

First equation $y = x + 1$

$0$ means $y< x + 1$

Second equation $y = x-2$

$0>-2$ means $y> x-2$

Therefore, Option D is correct.

The linear inequalities of the system is y > x-2 and y < x + 1

7 0

3 years ago

Read 2 more answers

Por 8 días de trabajo, 12 obreros han cobrado $640 ¿Cuánto ganarán por 16 días, 15 obreros con los mismos jornales? (APLICAR REG

Deffense [45]

The question in English
For 8 days of work, 12 workers have charged $ 640. How much will 16 workers with the same wages earn for 16 days? (APPLY RULE OF THREE)

if 12 workers --------------> charged $640 in 8 days
1 worker---------------> x
x=640/12-------> $53.33
1 worker charged $53.33 for 8 days

1 worker charged $53.33----------------> for 8 days
x-------------------------------------> 1 day
x=$53.33/8------> x=$6.67
1 worker charged $6.67 for 1 day

therefore
16 workers with the same wages earn for 16 days
= $6.67*16*16-----> $1706.67

the answer is
$1706.67

The answer in Spanish

Si 12 trabajadores --------------> cobraron $640 en 8 dias
1 trabajador---------------> x
x=640/12-------> $53.33
1 trabajador cobro $53.33 por 8 dias de trabajo

Si 1 trabajador cobro $53.33----------------> por 8 dias
x-------------------------------------> 1 dia
x=$53.33/8------> x=$6.67
1 trabajador cobra $6.67 por 1 dia de trabajo

Por lo tanto
16 trabajadores con el mismo salario cobraran por 16 dias de trabajo
= $6.67*16*16-----> $1706.67

La respuesta
$1706.67

7 0

2 years ago

What is 3x+2x+6=-18​

What is 3x+2x+6=-18