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
Margarita [4]
3 years ago
11

Solve the equation -4x+12=-4 for x .

Mathematics
2 answers:
mihalych1998 [28]3 years ago
4 0
-4x +12 -12 = -4 -12
-4x = -16
x = 4
Daniel [21]3 years ago
3 0
Times both sides by -1
4x-12=4
add 12 to both sides
4x+12-12=4+12
4x+0=16
4x=16
divide both sides by 4
(4x)/4=16/4
(4/4)x=4
1x=4
x=4
You might be interested in
What is the following expression when simplified 5x + 8(5 + 2x)?
denpristay [2]

Answer:

5x+56

Step-by-step explanation:

5x+8(5+2)

5x+8(7)

6 0
3 years ago
Read 2 more answers
How to solve these two problems ?
puteri [66]

8)  \theta is -0.896 radians

9) length of arc is 41.91 cm

Solution:

8)

Given that,

tan\ \theta = \frac{-5}{4}

\theta is in quadrant 4

To find: \theta

From given,

tan\ \theta = \frac{-5}{4}\\\\\theta = tan^{-1} \frac{-5}{4}\\\\\theta = tan^{-1} (-1.25)\\\\\theta = -51.34

Thus value of \theta is -51.34 degrees

Convert degrees to radians

-51.34\ degree = -51.34 \times \frac{ \pi }{180}\ radian\\\\-51.34\ degree = -0.896\ radian

Thus \theta is -0.896 radians

9)

From given,

radius = 15.4 cm

\theta = \frac{13 \pi }{15}

<em><u>The length of arc when angle in radians is:</u></em>

arc\ length = r \times \theta\\\\arc\ length = 15.4 \times \frac{ 13 \pi }{15}\\\\arc\ length = 15.4 \times 2.721\\\\arc\ length = 41.91

Thus length of arc is 41.91 cm

4 0
3 years ago
The mean age of 9 women in an office is 27 years old. The mean age of 7 men in an office is 25 years old. What is the mean age (
marta [7]

Answer:

26 years

Step-by-step explanation:

Given:

The mean age of 9 women = 27 years old

The mean age of 7 men = 25 years old

Question asked:

What is the mean age (nearest year) of all the people in the office?

solution:

By using, mean = sum of observations divided by number of entities

The mean age of 9 women = 27 years old

\frac{sum of ages}{number of women} = 27

Sum  of ages of women = 27 \times9 = 243\\ years

The mean age of 7 men = 25 years old

\frac{sum of ages}{number of men} = 25

sum of ages of men = 25 \times7 = 175

Total sum of ages of men and women in the office = 243 + 175

                                                                                     = 418 years

Total number of people in the office = 9 women + 7 men = 16

The mean age of all the people in the office = Total sum of ages of men and women in the office divided by Total number of people in the office

                                                                         = \frac{418}{16}  = 26.125

Therefore,  the mean age (nearest year) of all the people in the office = 26 years

6 0
3 years ago
Which postulates are used to find the perimeter of a shape?
Illusion [34]

Answer:

Hiiiiiiiiiiiii.... lol ooopppp

5 0
3 years ago
Melissa has $100 in the bank. She plans to deposit $40 per week until she reaches $500. What is the rate of change? Explain what
Wewaii [24]

Answer:

$40 per week

Step-by-step explanation:

Step one:

Given data

the initial amount is = $100

the total amount= $500

let the number of weeks be x

Step two:

The expression for the scenario is

500= 100+40x-------1

From the expression above, the rate of the change is $40 per week.

this means that in every week the account will be increased by $40

5 0
2 years ago
Other questions:
  • What is 2 and 1/5 as a mixed number?
    5·2 answers
  • Determine the simple interest on an account paying 5.5% annually interest of an investment of 20,650
    13·1 answer
  • Which describes the process that could be used as the first step in solving this equation? 6x = 4 + 5(x + 8) A) Combine like ter
    10·2 answers
  • 4x/5-12=20 PLEASE I REALLY NEED HELP
    14·1 answer
  • -14x &gt; -3 do I do the 14 or the 3 first?​ because all I have to do is to simplify what it is
    15·1 answer
  • The number 21 is what percent of 75​
    8·1 answer
  • Could someone please help me with this?
    8·2 answers
  • Help please it’s math
    14·2 answers
  • When x increases from a to a +2, y increases by a factor of 1/4
    8·1 answer
  • Aubreys dinner cost $85 she tips the waitstaff 30% for excellent service
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!