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ale4655 [162]
2 years ago
9

Kaylee read a report that said the probability that a randomly selected American is left-handed is 14 % 14%14, percent. She was

curious how many left-handed students to expect in a class of 25 2525 students. She simulated 40 4040 classes of 25 2525 students where each student selected had a 0.14 0.140, point, 14 probability of being left-handed. Kaylee counted how many left-handed students were in each simulated class. Here are her results:
Mathematics
1 answer:
crimeas [40]2 years ago
5 0

Answer:o.2

Step-by-step explanation:

You might be interested in
Timothy is putting fertilizer on a field after planting some crops. The directions on the barrel state to use 0.75 quarts for ea
mote1985 [20]

Answer

Find out the how much fertilizer will Timothy need for two fields, one that is 22.5 acres and one that is 38.25 acres .

To proof

As given

Timothy is putting fertilizer on a field after planting some crops

The directions on the barrel state to use 0.75 quarts for each acre of land.

fertilizer will Timothy need for 22.5 acres = 22.5 × 0.75

                                                                     = 16.875 quarts

fertilizer will Timothy need for 38.25 acres = 38.25×0.75

                                                                       = 28.6875 quarts

total fetilizer Timothy need for two fields = 16.875 +  28.6875

                                                                   = 45.5625

                                                                   = 45.6 ( approx )quarts

Therefore the total  fertilizer will Timothy need for two fields be  45.6 ( approx )quarts .

Hence proved

                                               

6 0
2 years ago
3. The area of a rectangular deck, in square meters, is given by the polynomial 40p2 + 24p.
lorasvet [3.4K]

Answer:

Length = 5p + 3

Perimeter = 26p + 6

Step-by-step explanation:

Given

Area = 40p² + 24p

Width = 8p

Solving for the length of deck

Given that the deck is rectangular in shape.

The area will be calculated as thus;

Area = Length * Width

Substitute 40p² + 24p and 8p for Area and Width respectively

The formula becomes

40p² + 24p = Length * 8p

Factorize both sides

p(40p + 24) = Length * 8 * p

Divide both sides by P

40p + 24 = Length * 8

Factorize both sides, again

8(5p + 3) = Length * 8

Multiply both sides by ⅛

⅛ * 8(5p + 3) = Length * 8 * ⅛

5p + 3 = Length

Length = 5p + 3

Solving for the perimeter of the deck

The perimeter of the deck is calculated as thus

Perimeter = 2(Length + Width)

Substitute 5p + 3 and 8p for Length and Width, respectively.

Perimeter = 2(5p + 3 + 8p)

Perimeter = 2(5p + 8p + 3)

Perimeter = 2(13p + 3)

Open bracket

Perimeter = 2 * 13p + 2 * 3

Perimeter = 26p + 6

4 0
2 years ago
The weights of cars passing over a bridge have a mean of 3,550 pounds and standard deviation of 870 pounds. Assume that the weig
Annette [7]

Answer:

0.24315

Step-by-step explanation:

Using the z score formula to solve this question

z = (x - μ) / σ,

Such that:

x = raw score

μ = population mean

σ = population standard deviation.

From the question:

x = 3000

μ = 3550

σ = 870

z = (3000 - 3550) / 870

z = -550/870

z = -0.6962

Using the z score table as well as probability calculator(as requested in the question to find the z score)

The probability of having less than 3000 is obtained as:

P(x<3000) = 0.24315

7 0
2 years ago
A standard city block in Manhattan is a rectangle measuring 80 m by 270 m. A resident wants to get from one corner of a block to
kondor19780726 [428]

Answer:

68.4 meters shorter

Step-by-step explanation:

ok so you want to compare the distance  80 m + 270 m with the diagonal length.

the diagonal length =  root ( 80^2   +  270^2 )

diagonal length = root(6400 +  72900)

diagonal = root(79300) =281.602 m

so.

350 - 281.602 = 68.397 meters  about  68.4 meters  shorter than walking around

5 0
2 years ago
Jazmin is completing an art project. She has two pieces of construction paper. The first piece is 444444 inches wide and the sec
Neko [114]

Answer:

11

Step-by-step explanation:

Khan academy

3 0
2 years ago
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