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
UNO [17]
3 years ago
13

How do you solve: 2(7-x)+4x=20

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
5 0
First expand it
Next subtract 14 - 2x + 4x so it can be 14 + 2x
Next subtract 14 from both sides
Next subtract 20 - 14 so it can be 6
Then divide both sides by 2
And lastly reduce the fraction 6/2 and once u reduce it u have your answer which is x = 3.
You might be interested in
Question:
Marina CMI [18]
Since 2x+y>4 you get y>4-2x. Then you draw the line y=4-2x then you are interested in everything above the line not including it since it is y>4-2x so it is a dashed line. You need to shade the side that satifies the inequality and since it is every pair (x,y) where y>4-2x, you need to shade everything above the line which is the side that does not include the origin. So the answer is C.

7 0
3 years ago
Ben drinks tea at an incredible rate. He drinks 3 1/2 liters of tea every 2/3 of an hour. Ben drinks tea at a constant rate. How
s344n2d4d5 [400]
Divide 3 1/2 by 2/3. 3 1/2 = 7/2 as an improper fraction, so we have 7/2 ÷ 2/3 = 7/2 * 3/2 = 21/4 = 5 1/4 L
5 0
3 years ago
Read 2 more answers
YOU KNOW THAT THE SUM OF THE ANGLES IN A QUADRILATERAL IS 360 DECREES. HOW CAN THIS HELP YOU REMEMBER THAT THE SUM OF THE ANGLES
gtnhenbr [62]

Answer:

that can help because all you need to remember is that the sum of the angles in a triangle is half of the sum of the angles that add up in a quadrilateral.

5 0
2 years ago
If sin theta = -0.7660, which of the following represents an approximate value of tan theta, for 180 degrees < theta < 270
Elis [28]
We have that
sin ∅=-0.7660

the sin ∅ is negative
so 
∅ belong to the III or IV quadrant
but
180°< ∅ < 270°
hence
∅ belong to the III quadrant
sin ∅=-0.7660
sin² ∅+cos² ∅=1
cos² ∅=1-sin² ∅------> cos² ∅=1-(0.7660)²-----> 0.4132
cos ∅=√0.4132-----> cos ∅=0.6428
the value of cos ∅ is negative-------> III quadrant
cos ∅=-0.6428

tan ∅=sin ∅/ cos ∅----> tan ∅=-0.7660/-0.6428----> tan ∅=1.1917

the answer is
tan ∅ is 1.1917
4 0
3 years ago
A 180 ft long board is cut into 3 pieces. The second piece of
blagie [28]

Answer:

20 feet

Step-by-step explanation:

1st piece = x

2nd piece = 2x

3rd piece = 6x

x+2x+6x=180

9x=180

x=20

so the first piece is 20 feet, the second is 40, and the third is 120.

6 0
3 years ago
Read 2 more answers
Other questions:
  • How much sides do a pectagan has
    10·2 answers
  • Gwyneth begins solving for x in the equation 2(x-4)=5(4-2x)+4x. After applying the distributive property and combining like term
    13·2 answers
  • You see a£97 top but don't have enough money so u borrow£50 from ur mumsy and £50 from ur dad=100 you buy the top and get £3 cha
    10·1 answer
  • What is the slope of the line that passes through the points (5, -10) and
    8·2 answers
  • PLS HELP I DONT UNDERSTAND :( WILL MARK BRAINLIEST+
    14·2 answers
  • A color called passion pink is made by making red paint and white paint in a ratio 2 to 7. How many drops of white paint do you
    15·2 answers
  • Brian’s backyard is in the shape of a square. If the yard is 21 feet long, how much land does Brian’s backyard cover?
    12·1 answer
  • Evaluate each expression. 9. ⎪31⎥ + ⎪–5⎥10. ⎪–16⎥ – ⎪4⎥ 11. ⎪–28⎥ – ⎪–1⎥12. ⎪11–2⎥ 13. ⎪44⎥ + ⎪–34⎥14. ⎪–101⎥ – ⎪–1⎥
    14·1 answer
  • Find the value of x.
    14·1 answer
  • HELP PLEASE (GIVING BRAINLIEST))
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!