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
kaheart [24]
3 years ago
11

1/2s=4s-21 please show steps

Mathematics
1 answer:
omeli [17]3 years ago
4 0

Answer:

s = 6

Step-by-step explanation:

Goal is to isolate the variable (s)

1/2s = 4s - 21

Subtract 4s from both sides - this cancels out the 4s on the right side and moves it to the left side

1/2s - 4s = -21

To add or subtract fractions, they must have a common denominator

Convert 4s to a fraction over 2

1/2s - 8/2s = -21

Subtract the numerators and keep the denominators

-7/2s = -21

Remember the goal is to isolate the variable

In order to get rid of the -7/2, we multiply by its reciprocal (which is -2/7)

What we do to one side, we must do to the other (this means multiply by -2/7 on both sides

-7/2s × -2/7 = -21 × -2/7

s = -21 × -2/7

Negative × negative = positive

s = 42/7

Divide 42 by 7

s = 6

You might be interested in
What are the solution
AleksandrR [38]

Answer:

B

Step-by-step explanation:

We can get two equations from the inequality:

3x+2>9\\3x+2>-9

We just need to simplify both equations to get our answers:

3x+2>9\\3x>7\\x>\frac{7}{3}

3x+2>-9\\3x>-11\\x>\frac{-11}{3}

The two answers we get are:

x\frac{7}{3}

Which is also B.

3 0
2 years ago
Adam wanted to play his video games. His mother told him that he needed to finish his homework, clean out the dishwasher, and cl
11Alexandr11 [23.1K]

Answer:

2 hours and 28 mins

Step-by-step explanation:

75-15=60=1 hour     remain 15 mins

45+14=63-3=60=1 hour      remain 3 mins

3+25=28 mins        remain 0 mins

total= 2hours and 28 mins

plz mark me brainly .

3 0
2 years ago
5 in<br> 9 in<br> 10 in<br> Surface Area =
yKpoI14uk [10]

5*9*10= Surface Area

5 0
3 years ago
Six books stand on the bookshelf.
iris [78.8K]

Answer:

10.1 cm

Step-by-step explanation:

1.2 + 0.8 + 2.4 + 1.9 + 1.5 + 2.3 = 10.1 cm

3 0
2 years ago
Read 2 more answers
Bruh, who else has exams?
Llana [10]

Answer:

I have exams too well cba's

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • Chef plans to serve 4.5 oz. steaks to 180 Guests. How many POUNDS only of raw steak should Chef order if Waste (trimming and coo
    11·1 answer
  • 4(5x-3)=48<br><img src="https://tex.z-dn.net/?f=4%285x%20-%203%29%3D%2048" id="TexFormula1" title="4(5x - 3)= 48" alt="4(5x - 3)
    13·1 answer
  • Find all of the polar coordinates of point P if p=(1,-pi/6)
    11·2 answers
  • What is the diameter of a circle with a circumference of 66? Round to the nearest tenth.
    5·1 answer
  • Misty bought 3 CDs. The country music CD cost $12. The rock music CD cost 2/3 as much as the country music CD. The platinum edit
    6·1 answer
  • the sum of three decimal numbers is 6 exactly one of the numbers is less than 1 what could the numbers be​
    6·1 answer
  • PLEASE HELP ME ASAP!!!!
    9·2 answers
  • Can somebody please help
    10·1 answer
  • Ammie collects 24.3 pounds of metal to take to a recycling center. The recycling center pays her for 16.4 pounds of the metal an
    6·2 answers
  • Determine if the following event is independent or dependent. Ursula went to the market and chose a blue marker from one box of
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!