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
MrRa [10]
3 years ago
9

A number increased by 100% and decreased by 20% is x. what is the number ? NEEDED TODAY

Mathematics
2 answers:
vodka [1.7K]3 years ago
5 0

Answer:

Let's assume the number be 100.

According to the problem , 100 is increased by 100%.

So, new number will be 100+100=200

Now 200 will decreased by 20%.

So, 20% of 200= 0.20*200= 40.

So, again the number has been changed into 200+40=240.

So, x=240

Step-by-step explanation:

madreJ [45]3 years ago
4 0

9514 1404 393

Answer:

  x/1.6

Step-by-step explanation:

Let n represent the number. When n is increased by 100%, its new value is ...

  n(1 +100%) = n(1 +1) = 2n

When this value is decreased by 20%, its new value is ...

  (2n)(1 -20%) = (2n)(0.8) = 1.6n

This value is x, so the number is ...

  1.6n = x

  n = x/1.6 . . . . . . . divide both sides by 1.6

You might be interested in
What is the perimeter of half of a circle with a diameter of 14 inches?
Rashid [163]

Answer:

35.991

Step-by-step explanation:

6 0
2 years ago
For which values of a, b, and c will Ax+ By=C be a horizontal line through the point (-4,2)
RUDIKE [14]

Answer:

A = 0, B = 1 and C = 2

Step-by-step explanation:

The slope of a horizonal line is zero.

y = mx + b              Use the slope intercept form with m = 0  and point (-4, 2).

2 = 0(-4) + b           Solve for "b"

2 = 0 + b

2 = b

The equation in slope intercept form is y = 0x + 2 ; y = 2.

The equation in standard form: Ax + By = C   has the value 0x + y = 2

3 0
2 years ago
There are 1000 workers in factories each worker works 30 hours a week is paid $10 and 50 cent an hour how much is the company pa
dedylja [7]

Answer:

Step-by-step explanation:

the anser is 315,000

6 0
2 years ago
Draw a model of square root of 12 using perfect squares
Shkiper50 [21]

Answer:

The answer is "\sqrt{12} is not a perfect square".

Step-by-step explanation:

12 is not a perfect square because it is the natural number, and no other natural number would square the number 12, that's why it is not a perfect square.

If we calculate the square root of \sqrt{12}. so, it is will give 2\sqrt{3} that is not a perfect square root which can be described as follows:

\Rightarrow \sqrt{12}= \sqrt{2\times 2\times 3}

            = \sqrt{2^2\times 3}\\\\= 2\sqrt{3}\\\\

\bold{\sqrt{12}} is not a perfect square root.

7 0
3 years ago
Read 2 more answers
Last year my family decided to put on a play It was A Great success . 200 people attended and we earned a total of 800 . If adul
nata0808 [166]

Answer:

200 adults

Step-by-step explanation:

We can set-up a system of equations to find the number of adults. We know children and adults attended. We will let c be the number of children and a be the number of adults. Since 200 people attended, then c+a=200.

We also know they made $800 and adult tickets cost $4 and child tickets cost $2. We can write 2c+4a=800.

We will solve by substituting one equation into the other. We start by solving the first equation for c. c+a=200 becomes c=200-a.

Now we substitute c=200-a into 2c+4a=800. Simplify and isolate the variable a.

  • 2(200-a)+4a=800
  • 400-2a+4a=800
  • 400+2a=800
  • 400-400+2a=800-400
  • 2a=400
  • a=200

This means that 200 adults attended and 0 children attended.

8 0
3 years ago
Other questions:
  • I need help!!! As fast as possible!!!!
    10·2 answers
  • A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 428428 gram setting.
    6·1 answer
  • If maria paid her supplier $8.50/doz for roses and sold them for $19.95,what was the percent markup?
    5·1 answer
  • Please help me quick!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    10·1 answer
  • Derive the equation of the parabola with a focus at (-5,5) and a directix of y = -1
    6·1 answer
  • A painting measures 2.4 feet from left to right. It’s hung in the center of a rectangular wall measuring 20 feet from left to ri
    15·1 answer
  • Identify each pair of angles named below as adjacent angles or vertical angles.
    12·1 answer
  • If f(x)=3x-2 find f-1 (13)​
    6·1 answer
  • HELP PLS!! this is geometry and I’m not sure how to do it!! So I was wondering is someone could help me solve these!!
    14·2 answers
  • Determine if the triangles below are similar. If they are, give the rule that you used to determine similarity.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!