All categories

3 years ago

-x+8+3x=-6 hep me plz

Mathematics

2 answers:

marissa [1.9K]3 years ago

7 0

Answer:

$x=-7$

Step-by-step explanation:

$-x+8+3x=-6$

$8+3x-x=-6$

$8+2x=-6$

$8+2x-8=-6-8$

$2x=-14$

$2x/2=-14/2$

$x=-7$

Alik [6]3 years ago

6 0

Answer:

x = -7

Step-by-step explanation:

Move over all the numbers and variables to one side and equal them to zero. The equation should now look like this: -x+8+3x+6=0

Combine like terms! Add -x+3x to get 2x and add 8+6 to get 14.

The equation should now read: 2x+14=0

Subtract 14 from both sides to show: 2x = -14

Get x by itself! Divide both sides by 2 to get x = -7

You might be interested in

Two women were complaining about their teenagers’ preoccupation with clean hair. One moaned, “My four boys will use up three bot

olga2289 [7]

Girls 5%

( girls 5 to 4 and boys 4 to 3)

3 0

4 years ago

Help please due today

Readme [11.4K]

I’m pretty sure Scale drawings is the correct answer!

6 0

3 years ago

Read 2 more answers

The speed limit on 1-35 is 80 miles per hour. How far can Mrs.Mindy drive in 2 1/2 hours?

Mars2501 [29]

The answer to this is C

8 0

3 years ago

If a salesperson sells 3/4 of an acre for $80,000, what was the price per square foot rounded to two decimal spaces?

Julli [10]

Now, recalling that for 1 yard, there are 3 feet, therefore $\bf \begin{array}{ll}
yards&feet\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1yd&3ft\\
(1yd)^2&(3ft)^2\\
yd^2&3^2ft^2\\
&9ft^2
\end{array}$

and keeping in mind that, there are 4840 yd² in 1 acre, then

$\bf \cfrac{\quad \frac{3}{4}~\underline{acre}\quad }{80000~\$}\cdot \cfrac{4840~\underline{yd^2}}{\underline{acre}}\cdot \cfrac{9~ft^2}{\underline{yd^2}}\implies \cfrac{\frac{3}{4}\cdot4840\cdot 9~ft^2}{80000~\$}\implies \cfrac{\frac{130680}{4}}{80000}
\\\\\\
\cfrac{\frac{130680}{4}}{\frac{80000}{1}}\implies \cfrac{130680}{4}\cdot \cfrac{1}{80000}\implies \cfrac{3267}{8000}~\frac{ft^2}{\$}~\approx~ 0.408375 ~\frac{ft^2}{\$}$

5 0

3 years ago

Can you help me solve systems of equations by elimination step by step 6x+y=15 -7x-2y=-10

Anna71 [15]

Answer: (4, -9)

Step-by-step explanation:

Use elimination method. Manipulate one (or both) equations to eliminate one of the variables and solve for the remaining variable. I will be eliminating y

6x + y = 15 → 2(6x + y = 15) → 12x + 2y = 30

-7x - 2y = -10 → 1(-7x + 2y = -10) → -7x - 2y = -10

5x = 20

x = 4

Next, replace "x" with "4" into either equation and solve for y.

6(4) + y = 15

24 + y = 15

y = -9

Check:

Plug in x = 4 and y = -9 into the other equation to verify it makes a true statement.

-7x - 2y = -10

-7(4) - 2(-9) = -10

-28 - -18 = -10

-28 + 18 = -10

-10 = -10 $\checkmark$

6 0

3 years ago