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
Allushta [10]
3 years ago
10

21-x/x =1/2 what is x plz help

Mathematics
2 answers:
Vesna [10]3 years ago
7 0

Answer:

(21-x)/x=1/2

or,42-2x=x

or,42=3x

or,42/3=x

or,x=14

so,the value of x is 14

hammer [34]3 years ago
4 0

\frac{21-x}{x}=\frac{1}{2} \\\\2(21-x)=x\\\\42-2x=x\\\\42=x+2x\\\\3x=42\\\\x=14

You might be interested in
The length of a rectangle is 2 cm less than twice the width. The area of the rectangle is 112 cm2. Find the length and width of
ELEN [110]

Let breadth be x

  • Length=2x-2

We know

\boxed{\sf Area=Length\times Breadth}

\\ \sf\longmapsto 112=x(2x-2)

\\ \sf\longmapsto 2x^2-2x-112=0

\\ \sf\longmapsto x=-7\:or\:x=8

  • Ignore negative value

Now

\\ \sf\longmapsto Length=2x-2=2(8)-2=16-2=14

\\ \sf\longmapsto Breadth=8

3 0
3 years ago
• Tyler ran 4,200 meters in 30 minutes.
gogolik [260]
Mai ran 4,200 meters or 4.2 kilometers in 30 minutes.
7 0
3 years ago
What is the total volume of the piece of cake?
bearhunter [10]

Answer:

The answer is 540^3

Step-by-step explanation:

The height is 6

base 1 or a is 10

base 2 or b is 18

base 3 or c is 20.59 (use Pythagorean theorem)

4 0
3 years ago
Find the lateral area of the prism.<br> 4cm<br> 3cm <br> 6cm<br> 5cm<br> Lateral Area = [?]cm2
kolbaska11 [484]

Answer:

The lateral surface area of a prism is the sum of the surface areas of the sides of the prism.

Since the bases of the prism are triangles, there are three sides. The area of each lateral is the product of a side of the triangle times the height of the prism.

We can express this as Lateral Surface Area LSA = (s1xh) + (s2xh) + (s3+h), where "s1, s2, s3" are the lengths of the sides of the triangle and "h" is the height of the prism.

We can factor out "h" to get LSA = hx(s1+s2+s3) where the factor "s1+s2+s3" is the perimeter of the triangle.

Solving for "h", we get h = LSA / (s1+s2+s3)

For your specific problem, h = 300 / (4 + 5 + 6) = 300 / 15 = 20

4 0
3 years ago
2m<br> 2 m<br> m<br> 2m<br> m<br> - 2m<br> Area
igor_vitrenko [27]

Answer:

Yes

Step-by-step explanation:

Yes

6 0
3 years ago
Other questions:
  • Josh takes a load of dress shirts to the dry cleaners. The amount he pays for dry cleaning (
    13·2 answers
  • HELP PLZ WILL MARK BRAINLIEST
    9·2 answers
  • How would the numbers -20, 0, and 20 appear on a number line?
    11·1 answer
  • A soup company wants to have a cylinder shape for their soup can. Determine the volume of the soup can if the diameter is 7.5 cm
    8·2 answers
  • Luke and Mathew ran a lemonade stand on Saturday. They agreed that Mathew would get 60% of the profit because the lemonade stand
    15·1 answer
  • What’s the value of x?
    7·1 answer
  • a bridge will be supported by 16 cylindrical concrete supports, each of which has a height of 12 meters and a circumference of 7
    14·1 answer
  • PLEASE ANSWER ALL OF THESE FOR 97 POINTS AND YOU ARE THE GOAT
    15·2 answers
  • 19. 5x – 3y = -3<br> 2x + 6y = 0
    6·1 answer
  • What is the equation of the line through (-2, 5) and (0, 3)? A. y = x - 3 B. y=x+3 C. y = -x + 3 D. y=-x-3​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!