1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zhuklara [117]
4 years ago
12

Solve 12 + 12a + 4a = -4

Mathematics
2 answers:
Dima020 [189]4 years ago
5 0
Answer: a=-1

12+12a+4a=-4

(Collect like terms)
12+16a=-4

(Move constant to the right-hand side and change it’s sign)
16a=-4-12

(Calculate the difference)
16a=-16

(Divide both sides of the equation by 16)
a=-1
Zigmanuir [339]4 years ago
3 0

Answer:

a=-1

Step-by-step explanation:

we need to get a by itself

first combine like terms

12+16a=-4

now we need to get rid of the 12 so subtract it to other side

-16=16a

now divide 16 by -16 which gives you -1=a

You might be interested in
Consider this equation:
aleksandrvk [35]

Answer:

  • Plan: separate the variable term from the constant term; divide by the coefficient of the variable.
  • Steps: add 4 to both sides; collect terms; divide both sides by 3.

Step-by-step explanation:

The first step is to look a the equation to see where the variable is in relation to the equal sign, and whether there are any constants on that same side of the equal sign.

Here, the variable terms are on the left, and there is a constant there, as well. The plan for solving the equation is to eliminate the constant that is on the same side of the equation as the variable, then divide by the coefficient of the variable. To find that coefficient, we need to collect terms. In summary, the plan is to ...

  • add 4 to both sides of the equation
  • collect terms
  • divide by the coefficient of the variable (3)

Executing that plan, the steps are ...

  -2x -4 +5x +4 = 8 +4 . . . . add 4

  3x = 12 . . . . . . . . . . . . . . . collect terms

  x = 4 . . . . . . . . . divide by 3

4 0
4 years ago
Mrs. Kemp began the school year with 20 students in her kindergarten class. She had 23 students at the end of the year. What was
Liula [17]
First, we’re going to use this formula:

2nd number - 1st number
————————————— x 100%
1st number


If we plug in the numbers to this equation:

23-20
———- x 100%
20

And subtract 23 to 20, the answer to this equation is:

3
—- x 100% = 15%
20

In this case, the percent of increase is 15%.
3 0
3 years ago
What is the root of -9 ? Thank you for help
stiks02 [169]
I don't think this is possible...

But if you mean 9 then the root is 3
7 0
3 years ago
Lesson Posttest
stepladder [879]

Answer:

1

Step-by-step explanation:

Probability = number of fruit type/total number of fruit. Total number of fruit = 5 + 9 + 5 = 19.

The probability of drawing an apple is P(apple) = number of apples/total number of fruit = 5/19.

The probability of drawing a peach is P(peach) = number of peaches/total number of fruit = 9/19

The probability of drawing an apple is P(orange) = number of oranges/total number of fruit = 5/19

The probability of drawing either an apple, peach or orange at the first draw of fruit from the bag is

P(apple or peach or orange) =  P(apple) + P(peach) + P(orange)

                                               = 5/19 + 9/19 + 5/19

                                               = (5 + 9 + 5)/19

                                               = 19/19

                                               = 1

3 0
4 years ago
I need help with this problem
Soloha48 [4]

Answer:

3.\ \dfrac{3x}{11x}, \dfrac{6}{22},  \dfrac{9}{33},\dfrac{12}{44}

4. -18\\5.\ 400

Step-by-step explanation:

<u>Solution 3:</u>

Equivalent fractions to are to \frac{3}{11} be found out.

<u>Method: </u> By Multiplying both the denominator and numerator with the same number, we can easily find equivalent fractions.

1. Multiply with 2:

\dfrac{3 \times 2}{11 \times 2}\\\Rightarrow \dfrac{6}{22}

2. Multiply with 3:

\dfrac{3 \times 3}{11 \times 3}\\\Rightarrow \dfrac{9}{33}

3. Multiply with 4:

\dfrac{3 \times 4}{11 \times 4}\\\Rightarrow \dfrac{12}{44}

If we try to write in variable form, it can be written as:

\dfrac{3x}{11x}

where x is any number.

---------------

<u>Solution 4:</u>

(2x-10) when x=-4

2 \times (-4) -10\\\Rightarrow -8 -10\\\Rightarrow -18

------------

<u>Solution 5:</u>

(10a)^2, a=-2\\\Rightarrow \{10 \times (-2)\}^2\\\Rightarrow (-20)^2\\\Rightarrow 400

4 0
3 years ago
Other questions:
  • What is the approximate area of the triangle below?
    10·1 answer
  • What is the equation of a line that passes through the point (4,-6) and has a slope of -3
    6·1 answer
  • The circumference of a circular field is 160.14 yards. What is the radius of the field? Use for and do not round your answer.
    11·2 answers
  • Use elimination method to solve the silmutaneous equations<br> 2x +3y=1<br> 3x=2y+8<br> (4marks)
    12·1 answer
  • Write 4818 in scientific notation.
    10·1 answer
  • Write the following least to greastest <br><br>8.75<br><br>5.75
    15·2 answers
  • Solve the system of equations by the substation method. Y=4x+5 y=7x+6. Select the correct choice below and if necessary, fill in
    11·1 answer
  • −5/3+5/3 no one has posted this???
    10·2 answers
  • What is the mean of the following set?
    5·1 answer
  • Alina had 3/5 much money as edna. edna had $32 more than alina. how muuch money would alina have if her mother gave her 1/6 more
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!