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
Ratling [72]
3 years ago
11

Evaluate this expression: 3x + 9x -5

Mathematics
1 answer:
Margarita [4]3 years ago
5 0

Answer:

12x - 5

Step-by-step explanation:

3x + 9x - 5 can be easily simplified by combining like terms.

3x and 9x are like terms because they both contain the same variable and the same exponent (understood to be 1).

Therefore, because an addition sign separates the two terms, it is expected of you to add the two together. To do this, just add the terms together as you would any other terms.

3x + 9x = 12x

Because the 5 is the only constant in the equation, it cannot be combined with anything else.

The simplified expression is 12x - 5.

You might be interested in
Fifteen more than twice the hours Carla worked last week is the same as three times the hours she worked this week decreased by
lapo4ka [179]
2x-15=3(x-15) 
2x-15=3x-45
2x+30=3x
30=x

Let's check this work!

2(30)-15=3(30-15)
60-15=3(15)
45=45

She worked 45 hours each week

 *the reason it is 2x-15 and not 15+2x is because "more than" is considered a "turn around word" meaning it is the opposite
3 0
3 years ago
Samuel is 4 1/6 feet tall. His dad is 5 3/4 feet tall.How much taller is Samuels dad then Samuel
Sloan [31]

Answer:

1 7/12

Step-by-step explanation:

Just subtract the fractions if you cant do it by head or paper use a calc so 5 3/4 - 4 1/6= 1 7/12 samuels dad is 1 7/12 taller than samuel.

6 0
2 years ago
Any flvs algebra students wanna help me out? :')
kirza4 [7]
34.5 is correct because
7 0
3 years ago
A toy store wants to give away free goody bags to their customers. They have 60 lollipops and 72 stickers to give away. They wan
Flura [38]

60 because each bag has to be the same

5 0
3 years ago
A mechanic has a radiator hose that measures 32 feet long. It needs to be cut into pieces equaling 5 feet 3 inches. How many who
kirza4 [7]

Answer:

6 pieces

Step-by-step explanation:

6x5=30

6x3=18

18-12=6

the total would be 31ft and 6 inches

6 0
3 years ago
Read 2 more answers
Other questions:
  • Robbie is using the recipe below to make chicken noodle soup. He plans to make 6 batches of the soup. He has 2/3 teaspoon of bla
    13·1 answer
  • One batch of cookies calls for 2 cups of oil, 4 cups of sugar, 1.5 cups of sugar, 1 cup of baking soda, and 1 cup of chocolate c
    12·1 answer
  • Please help me on a question <br><br> 43.2 dg = ______ hg
    13·2 answers
  • How do u turn y-4=5/3(x+3) into standard form
    13·1 answer
  • If the surface area of a cube is increased by a factor of 2 (so that the new surface area is twice the size of the original surf
    6·1 answer
  • True or false: (x−6) is a factor of 4x3−18x2+3x−13.
    9·1 answer
  • Pl help it’s for homework
    5·1 answer
  • PLZ HELP A BIRB IN NEED oF HELP!!! Need asap rn. first one if correct gets crown. sorry if u don't get the crown.
    12·2 answers
  • At one point on the trip the miles are recorded as 15,121 when the gas tank is 75% full. Use a ratio equation to determine the m
    12·1 answer
  • Elijah and Riley are playing a board game. Elijah chooses the dragon for his game piece, and Riley chooses the cat for hers.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!