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
aalyn [17]
2 years ago
13

100 students were estimated at a

Mathematics
1 answer:
Alina [70]2 years ago
7 0

Answer:

20%

Step-by-step explanation:

Use the formula:

The "|" symbol represents absolute value and the dashed line represents a division line.

                         | Theoretical Value - Actual Value |

Percent Error = --------------------------------------------------   × 100

                         |              Theoretical value              |

  • 100 students is the theoretical value
  • 120 students is the actual value

100 - 120 = -20

-20 / 100 = -0.2

|-0.2| = 0.2

0.2 × 100 = 20

The answer is 20%

You might be interested in
The temperature falls from 3 degrees Celsius to -4 degrees celcius what is the the difference in these temperatures
STatiana [176]

Answer:

7

Step-by-step explanation:

3 - -4=7

6 0
3 years ago
A rectangular room is 1.2 1.2 times as long as it is wide, and its perimeter is 35 35 meters. Find the dimension of the room.
Westkost [7]

Answer:

I. Length, L = 9.552 meters

II. Width, W = 7.96 meters

Step-by-step explanation:

Let the length = L

Let the width = W

Given the following data;

Perimeter = 35 m

Translating the word problem into an algebraic equation, we have;

Length = 1.2W

To find the dimension of the room;

The perimeter of a rectangle is given by the formula;

P = 2(L + W)

Substituting into the formula, we have;

35 = 2(1.2W + W)

35 = 2(2.2W)

35 = 4.4W

Width, W = 7.96 meters

Next, we would find the length of the rectangle;

L = 1.2*W

L = 1.2 * 7.96

Length, L = 9.552 meters

6 0
3 years ago
Kaylee is selling candles to raise money for her lacrosse team. The large candles sell for $25 each and the small
EastWind [94]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Cost of large candle (a) = 25 each

Cost of small candles (y) = 10 each

Amount needed = $600

Number of each that must be sold to raise needed amount:

25a + 10y = 600.

Here a = number of large candles that must be sold at the price

y = number of small candles that must be sold at the price

Summing the revenue both should result in the required amount.

5 0
3 years ago
A bakery can make 4 cheesecakes for every 5 blocks of cream cheese. Which table represents the relationship between the number o
zloy xaker [14]

Answer:

where is the picture of the tables?

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
You attend a wedding and are second in line to get a slice of wedding cake. there are 3 slices of vanilla cake, 12 slices of cho
Dima020 [189]

Answer:

1/14

Step-by-step explanation:

Let A represent the event First person getting red velvet cake
Let B represent the event Second person getting red velvet cake

P(A) = Total number of Red Velvet Cakes ÷ Total Number of Cakes =

6/21 = 2/7

If the first person gets a red velvet cake, then there are 5 red velvet cakes and 20 total cakes

Therefore P(B|A) = Number of red velvet cakes left ÷ total number of cakes left = 5/20 = 1/4

P(A and B) == probability of both getting red velvet cake P(A∩B) = P(A).P(B|A) = 2/7 × 1/4 = 2/28 = 1/14

7 0
1 year ago
Other questions:
  • Solve for x and y:
    14·1 answer
  • What is total 14.56 plus tip 15% plus tax7%.
    15·1 answer
  • Slope: 5, y-intercept: -3
    15·1 answer
  • A baseball diamond is a square with sides of 90 feet. What is the shortest distance, to the nearest tenth of a foot, between fir
    12·2 answers
  • given that 8-sqrt(18) over sqrt(2) = a + b sqrt(2) where a and b are integers find the value of a and b
    14·2 answers
  • What is the reciprocal of -4
    13·2 answers
  • Please help me, Thank you
    7·1 answer
  • Here is another one <br> 5. 1 4/5 × 15
    14·1 answer
  • Please HELP if you can!
    6·1 answer
  • Which fractions are equivalent to the fraction below. 20/32
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!