Ask question

Ask question

All categories

3 years ago

10

John estimates that there is 150 people at the party. After counting, there are actually 148 people at the party Find the percen

t error.

1 answer:

dimulka [17.4K]3 years ago

3 0

Answer:

Percent error = 1.3514%

Step-by-step explanation:

Percent Error =

Value (observed) - Value (true)

---------------------------------------------

Value (true)

EQUALS

150 - 148 over 148

Which is 2/148

= 1.3513513513514%

You might be interested in

A rectangular tract of land in Mathville has the dimensions 4x2 + 3x + 12 and 4x – 2. Another rectangular area of a land in Alge

Goryan [66]

Answer:

Step-by-step explanation:

Area of a rectangle = Length * Width

Given the dimension

Length = 4x2 + 3x + 12

Width = 4x – 2

A) Area = (4x^2 + 3x + 12)(4x – 2)

Open the parenthesis

= 16x^3-8x^2+12x^2-6x+48x-24

Area of land in Mathville = 16x^3+4x^2+42x-24

For the land in Algebratown

Area = (5x^2 + x – 4)(2x + 1)

Area = 10x^3+5x^2+2x^2+x-8x-4

Area = 10x^3+7x^2-7x-4

B) difference between the area of Mathville and the area of Algebratown

= 16x^3+4x^2+42x-24 -(10x^3+7x^2-7x-4)

= 16x^3+4x^2+42x-24 -10x^3-7x^2+7x+4

collect like terms

= 16x^3-10x^3+4x^2-7x^2+42x+7x-24+4

= 6x^3-3x^2+49x-20

C) The difference if x = 9

Substitute x = 9 into the resulting function

A(x) = 6x^3-3x^2+49x-20

A(9) = 6(9)^3-3(9)^2+49(9)-20

A(9) = 2187-243+441-20

A(9) = 2,365

Hence the difference of the areas if x = 9 is 2,365

6 0

3 years ago

PLEASE HELP FAST!! I MIGHT GIVE BRAINLIEST TO FASTEST AND ACCURATE

goldenfox [79]

Answer:

1/6

Step-by-step explanation:

We want to find how long it takes for the bacteria to lose half its size. We can do this by taking one point of the bacteria and finding how long it takes to go to half its size. When t=0, 9300 * (1/64)^t = 9300 * 1 = 9300 as anything to the power of 0 is 1. Therefore, we can solve for t when the end result of the bacteria is 9300/2= 4650, making our equation

4650 = 9300 * (1/64)^t

divide both sides by 9300

1/2 = (1/64)^t

First, we can tell that 2^6 = 64*. Because of this, we can say that (1/2)^6 = 1^6/2^6 = 1/64, so (1/64)^(1/6) = 1/2. We know this because

(1/2)^6 = 64

take the 6th root of both sides

(1/2) = (64)^(1/6)

. This means that t=1/6, so the bacterial culture loses 1/2 of its size every 1/6 seconds

* if this is harder to figure out, e.g. 3 and 729, we can plug (log₃729) into a calculator

3 0

3 years ago

Carlos has 5/8 pounds of pumpkin seeds. He puts the seeds evenly into 10 bags. How much pumpkin seeds are in each bag

Katena32 [7]

Answer:

5/80 = 0.0625

6 0

3 years ago

How many real roots do you get if you take an even root of a negative number (for

expeople1 [14]

Answer:

cca

Step-by-step explanation:

csac

6 0

3 years ago

7) Four workers are hired to harvest potatoes

ioda

Total area of the field is 160 ft^2

Step-by-step explanation:

Given

Total workers = 4

Each worker's share of area = 5*8 feet

We will find the area for each worker and then multiply the area with four to find the whole area of field as it was evenly distributed to workers

so,

$Area\ given\ to\ one\ worker = 5*8\\= 40\ ft^2$

$Total\ area = 40*4 = 160\ ft^2$

Total area of the field is 160 ft^2

Keywords: Area, Measurement

Learn more about area at:

#LearnwithBrainly

6 0

3 years ago