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
Nezavi [6.7K]
3 years ago
14

Solve and show how you did: -2x + (12 - 9) = 2 + 9 + 2x

Mathematics
1 answer:
Norma-Jean [14]3 years ago
5 0
Remove parentheses
-2x + 12 - 9 = 2 + 9 + 2x

Simplify -2x + 12 -9 to -2x + 3
-2x + 3 = 2 + 9 + 2x

Simplify 2 + 9 + 2x to 2x + 11
-2x + 3 = 2x + 11

Add 2x to both sides
3 = 2x + 11 + 2x

Simplify 2x + 11 +2x to 4x + 11
3 = 4x + 11

Subtract 11 from both sides
3 - 11 = 4x

Simplify 3 - 11 to - 8
-8 = 4x

Divide both sides by 4
-8/4 = x

Simplify 8/4 to 2
-2 = x

Switch sides
x = -2
You might be interested in
Help please i suck at geometry
Tems11 [23]

Answer:

A

Step-by-step explanation:

10 and 8 are equal

11 and 15 are equal

due to the fact that the angles 10 and 11 but also 8 and 15 are supplementary, we know that they add up to be 180 degrees

180-42=138 degrees

and this means that angle 8 will also be 138 because of what we established earlier

5 0
3 years ago
Find the numerical value of the expression if x = 2.
marshall27 [118]

Step-by-step explanation:

6x-7

= 6×2-7

=12-7

=5

b) 3x

=3×2

=6

8 0
2 years ago
Solve -5x2 - 20x + 35 = 30 by completing the square.
Semenov [28]

Answer:

x=−2−√5 or x=−2+√5

Step-by-step explanation:

-5x2 - 20x + 35 = 30

Answer = x=−2−√5 or x=−2+√5

5 0
3 years ago
How do you write the number 1.049 in the hundredths place
sladkih [1.3K]
You would round 1.049 to 1.05.
4 0
3 years ago
Find the area of this circle use 3.14 or 22/7 or pie round your answer to the nearest hundred if necessary
notka56 [123]

Answer:

The area of the circle is 50.24 mm ²

Step-by-step explanation:

To solve this exercise we need to use the area formula of a circle:

a = area

r = radius = 4mm

π = pi = 3.14

a = π * r²

a = 3.14 * (4mm )²

a = 3.14 * 16mm ²

a = 50.24 mm ²

The area of the circle is 50.24 mm ²

6 0
3 years ago
Other questions:
  • Suppose tortilla chips cost 22.5 cents per ounce. If a bag costs $3.07, how many ounces are in the bag of chips? Round your answ
    6·1 answer
  • Martin uses 5/8 of a gallon of paint to cover 4/5 of a wall. What is the unit rate at which Martin paints in walls per gallon?
    14·2 answers
  • A turtle is at the bottom of a 20 foot well. Each day it crawls up 4 feet but it slips back 2 feet. After how many days will the
    5·1 answer
  • The point-slope form of the equation of the line that passes through (–9, –2) and (1, 3) is y – 3 = (x – 1). What is the slope-i
    11·2 answers
  • Lionel plays trumpet for a minimum of 45 minutes on the days that he practices. If x is the number of days that lionel practices
    13·1 answer
  • It takes 4 hours to go fly to Atlanta, a city that is about 200 miles. How many miles have I flown in in 2.5 miles
    11·1 answer
  • Ryder Industries is considering a project that will produce cash inflows of $92,000 a year for five years. What is the internal
    9·1 answer
  • A chemist has three different acid solutions. The first acid solution contains 20 % acid, the second contains 40 % and the third
    10·1 answer
  • Hey can you help me fast!!!
    7·1 answer
  • Solve the system by substitution. 2x - y = -3, 2x-2y = -2
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!