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
Crank
3 years ago
12

0.4(2x+1/2)=3[0.2x+(-2)]-4 solve the equation

Mathematics
1 answer:
melisa1 [442]3 years ago
5 0
0.4(2x+1/2) = 3[0.2x-2]-4
0.8x+0.2 = 0.6x-6-4         Distribute it out
0.8x+0.2 = 0.6x-10          Combine like terms
0.2x = -10.2                     Subtract 0.6x and 0.2 from both sides
x = -51                             Multiply both sides by 5
You might be interested in
Suppose a railroad rail is 3 kilometers and it expands on a hot day by 15 centimeters in length. Approximately how many meters w
earnstyle [38]

Answer:

Answer:  13.4 m

Step-by-step explanation:

For small angles, x, in radians,

tan(x) ≈ sin(x) = x

Use this to create an approximate diagram for the problem as shown in the figure below.

The actual deflected shape is parabolic, but it is approximated by an isosceles triangle with small equal angles.

The extend length is 3 km + 12 cm, which is 

3000 + 0.12 = 3000.12 m

Half of the extended length is 1500.06 m

Let h+  the rise of the center of the rail above ground.

From the Pythagorean theorem, obtain

h² + 1500² = 1500.6²

h² = 1500.06² - 1500² = 180.004

h = 13.4 m, which is about 0.9% of the original length.

Read more on Brainly.com - brainly.com/question/5596356#readmore

6 0
2 years ago
Which equation is not true ?
MaRussiya [10]

Answer:

0.75 = 375/100

Step-by-step explanation:

375/100 = 3.75 and there is no 3 as the whole number.

3 0
3 years ago
Write an expression for each situation.Use n when a variable is needed.Situation-Harry ran 2 more miles this week than last week
Scrat [10]
N+2

2 is the miles
while the n is the number that harry walked last week

5 0
3 years ago
If a bag contains 16 red, 6 yellow, 24 blue, and 8 white balloons, what is the part-to-whole ratio of yellow balloons to all bal
hichkok12 [17]
If a bag contains 16 red, 6 yellow, 24 blue, and 8 white balloons, that 1:7 part-to-whole ratio of yellow balloons to all balloons. There are 4 parts and 1 part is the part with the red balloons.

Your answer is: B) 1:7 

Have an amazing day and stay hopeful!

8 0
3 years ago
Read 2 more answers
For the functions f(x)=−9x^2+9 and g(x)=8x^2+9x, find (f+g)(x) and (f+g)(−1)
Galina-37 [17]

Answer:

f(x) = - 9x² + 9

g(x) = 8x² + 9x

To find (f+g)(x) add g(x) to f(x)

That's

(f+g)(x) = -9x² + 9 + 8x² + 9x

Group like terms

(f+g)(x) = - 9x² + 8x² + 9x + 9

<h3>(f+g)(x) = - x² + 9x + 9</h3>

To find (f + g)(- 1) substitute - 1 into (f+g)(x)

That's

(f + g)(- 1) = -(-1)² + 9(-1) + 9

= - 1 - 9 + 9

<h3>= - 1</h3>

Hope this helps you

7 0
3 years ago
Other questions:
  • A farmer makes a pen for his animals with a total perimeter of 46 feet. (see diagram)
    6·1 answer
  • Please help!
    6·2 answers
  • If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost
    7·1 answer
  • What is the term, coefficient, constant, and factor of 1/2(base1 + base2)h? (Formula used to find area of trapezoid)
    9·1 answer
  • What is the answer for this equation: 3n-8=n
    12·2 answers
  • Scientific notation help!!20 points
    13·2 answers
  • The diagram shows a right-angled triangle.
    14·1 answer
  • Find the missing angle measurements of LJK ? , fill in the boxes
    14·1 answer
  • What is the slope of the line that is perpendicular to the line that goes through the two points (-8, 3) and (4, 27)?
    11·1 answer
  • Bobby earns $9 per hour plus commission. Last week he worked 32.5 hours
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!