How to calculate the area of trapezium B using the scale factor

Answer:

  0.513671875 = 263/512 inches

  easier to use: depends on the measurement tool

Step-by-step explanation:

The model dimension is found by multiplying the actual dimension by the scale factor.

__

  model frame dimension = actual frame dimension × 1/64

  = (32.875 inches)/64 = 0.513671875 inches

In fractional form, this is ...

  (32 7/8) / 64 = (263/8) / 64 = 263/512 . . . inches

__

It is unlikely that a casual hobbyist will have access to tools that measure with a resolution finer than 0.0001 inches. More common would be a measurement resolution of 0.001 inches. Using such tools, the rounded decimal value 0.5137 or 0.514 inches would be more useful than the fractional measurement.

It is possible that an optical measuring device could be available that would present its result as a fraction of an inch. If such a tool were used, the fractional measurement value would provide an appropriate point of comparison.

In short, the measurement easiest to work with depends on the tool being used to make the measurement.

Answer:

a. median is 8

b. first quartile is 7

c. third quartile is 9.5

d. below

e. below

Step-by-step explanation:

7, 10, 10, 6, 7, 8, 8, 7, 9.

Place number in order least to greatest

6, 7, 7, 7, 8, 8, 9, 10, 10

a. What is the median?

The median is the middle number in a data set

number of terms in data set (n) + 1 / 2 =

9 + 1 / 2 = 10 / 2

6, 7, 7, 7, 8, 8, 9, 10, 10

The median is 8

b. What is the first quartile?

Q1 is the central point between the smallest score and the median

6, 7, 7, 7

since there is even number of data points you find the average,

7 + 7 / 2 = 14 / 2 = 7

c. What is the third quartile?

Q3 is the central point between the median and the largest score

8, 9, 10, 10

since there is even number of data points you find the average,

9 + 10 / 2 = 19 / 2 = 9.5

d. Draw a box plot of the data.

below

e. Write two conclusions about the data shown in the box plot.

There are no outliers with a minimum of 6 and a maximum of 10. The Interquartile Range is 2.5 (9.5 - 7)

The statement f⁻¹(x) has a y-intercept of (0, –36) and f⁻¹(x) has a range of all real numbers options third and fifth are correct.

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

The question is incomplete.

The question is: Consider the function f(x) = (-2/3)x - 24  Which conclusions can be drawn about f⁻¹(x) Select two options:

f⁻¹(x) has a slope of -2/3

f⁻¹(x) has a restricted domain.

f⁻¹(x) has a y-intercept of (0, –36).

f⁻¹(x) has an x-intercept of (–36, 0).

f⁻¹(x) has a range of all real numbers.

f(x) = (-2/3)x - 24

To find the inverse of a function:

interchange the x and y

x = (-2/3)y - 24

y = (-3/2)(x + 24)

y = (-3/2)x - 36

The slope of a function f⁻¹(x) is -3/2

From the graph, we can see the y-intercept is (0, -36) and the range will be all real numbers.

Thus, the statement f⁻¹(x) has a y-intercept of (0, –36) and f⁻¹(x) has a range of all real numbers options third and fifth are correct.

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Answer:

D and  E

Step-by-step explanation:

did the test

Interest on interest, or compound interest, is the adding of interest to the principal sum of a loan or deposit. The time for which the person must leave the money in the bank until it reaches $2500 is 1.2.

Interest on interest, or compound interest, is the adding of interest to the principal sum of a loan or deposit. It's the outcome of reinvesting interest rather than paying it out so that interest is received on the principal plus previously collected interest in the next quarter.,

[tex]A = P(1+ \dfrac{r}{n})^{nt}[/tex]

where A is the final amount

P is the principal amount

r is the rate of interest

n is the number of times interest is charged in a year

t is the number of years

The principal amount is 1000 dollars, while the rate of interest is 6.75% which is compounded monthly. Therefore, the time it will need for the account to reach $2500 is,

2500 = 1000[1+(0.0675/12)¹²ˣⁿ

2.5 = (1.0675)¹²ⁿ

log(2.5)\ log(1.0675) = 12n

14.0278 = 12n

n = 1.1689 ≈ 1.2

Hence, the time for which the person must leave the money in the bank until it reaches $2500 is 1.2.

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Answer: 13.6 years

Step-by-step explanation: Dealta Math Answer

Answer:

  78

Step-by-step explanation:

The number of correct problems is found by multiplying the percentage that were correct by the total number of problems.

__

  number correct = fraction correct × number of problems

  number correct = 0.39 × 200 = 78

Serenity answered 78 problems correctly.

_____

Additional comment

The symbol % is fully equivalent to /100. That is 39% = 39/100 = 0.39 (pronounced "thirty-nine hundredths"). Using a percent symbol is just another way to write a fraction.

Answer:

Its a for me

Step-by-step explanation:

trust me fuys

Hi student, let me help you out! :)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

We are asked to find how many terms are in [tex]\pmb{10y^2-3y+8}[/tex].

[tex]\triangle~\fbox{\bf{KEY:}}[/tex]

So let's compute the number of terms in this expression.

The first term is [tex]\pmb{10y^2}[/tex].

Is anything added or subtracted from 10y²?

Sure! [tex]\pmb{-3y}[/tex] is subtracted from 10y².

Also, 8 is added to -3y.

Thus, this expression has 3 terms.

Hope it helps you out! :D

Ask in comments if any queries arise.

#StudyWithBrainly

~Just a smiley person helping fellow students :)

Answer:

Sorry po Hindi ko po alm :(

Answer:

V = 1607.7 in^3

V = 0.94 ft^3

Step-by-step explanation:

To find the volume of a traffic cone, use the formula for the volume of a cone: (1/3)*π*h*r^2

h = height

r = radius of cone

Step 1: determine variables and units

2 feet = 24 inches

diameter = 2 * radius

radius = (1/2) * diameter = (1/2)*16 in = 8 inches

Step 2: determine volume

V = (1/3)*π*h*r^2

V = (1/3)*3.14*24*(8)^2

V = 1607.7 in^3

Optional step 3: determine volume in ft^3

h = 2 ft

r = 0.67 ft

V = (1/3)*π*h*r^2 = (1/3)*3.14*2*(0.67)^2

V = 0.94 ft^3

Explanation:

The commutative property of addition is where we can add two numbers in any order.

The general equation is x+y = y+x

A more concrete example would be something like 2+3 = 3+2 since both sides simplify to 5.

For 5a+b, it is the same as b+5a. We swap the two terms.

Answer:

x^2 -3x+1

it is your answer

The function x² - 3x + 1 represents a quadratic function.

A quadratic function is a function of the form f(x) = ax² + bx + c, where a, b, and c are constants.

In option A, we have f(x) = x² - 3x + 1, which fits the form of a quadratic function with coefficients a = 1, b = -3, and c = 1.

In option B, the function is Exponential.

In option C, the function is Exponential.

In option D, the function is logarithm.

Therefore, x² - 3x + 1 represents a quadratic function.

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Answer: 0.5 or - 0.834

Step-by-step explanation: Here is the explanation!

His average monthly expenses are: $750

The given parameters are:

The average monthly expenses are calculated using:

Average = Total expenses/Number of months

So, we have:

Average = (700 + 700 + 800 + 800)/4

Evaluate

Average = 750

Hence, his average monthly expenses are: $750

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Answer:

2

Step-by-step explanation:

the same as...

(2) is the answer

If the population is highly skewed, the sample size needed for the central limit theorem to apply usually has to be the same as that when the population is not highly skewed.

The central limit theorem states in probability theory that, in many instances, when independent random variables are added together, their correctly normalized sum tends toward a normal distribution, even if the original variables are not normally distributed.

If the population is highly skewed, the sample size needed for the central limit theorem to apply usually has to be the same as that when the population is not highly skewed.

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The value of x is 7 and the measure of ∠1 is 99

The given parameters are:

The sum of angles in a triangle is 180.

So, we have:

5x + 19 + 8x - 11 + 11x + 4 = 180

Evaluate the like terms

24x = 168

Divide both sides by 24

x = 7

Hence, the value of x is 7

The angles on a straight line add up to 180.

This means that:

∠1 + ∠QNM = 180

Subtract ∠QNM from both sides

∠1 = 180 - ∠QNM

Substitute ∠QNM = 11x + 4

∠1 = 180 - 11x - 4

Substitute x = 7

∠1 = 180 - 11 * 7- 4

Evaluate

∠1 = 99

Hence, the measure of ∠1 is 99

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The equivalent expression of 14r^4y^6/7r^8y^2 is 2y^4/r^4

The expression is given as:

14r^4y^6/7r^8y^2

Start by dividing 14 by 7

2r^4y^6/r^8y^2

Next divide y^6 by y^2

2r^4y^4/r^8

Lastly divide r^4 by r^8

2y^4/r^4

Hence, the equivalent expression of 14r^4y^6/7r^8y^2 is 2y^4/r^4

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a) A × B is the Cartesian product of A and B, given by the set

A × B = {(a, b) | a ∈ A and b ∈ B}

Then for A = {4, 6, 8} and {4, 5, 6}, we have the product

A × B = {(4, 4), (4, 5), (4, 6), (6, 4), (6, 5), (6, 6), (8, 4), (8, 5), (8, 6)}

b) The power set of a set X is the set containing all subsets of X. I'm not sure what you're asking to find the power set of, though. Hopefully it's not of A × B, since that would contain 2⁹ = 512 elements...

Instead I'll assume you mean a simpler set, such as A ∩ B. The intersection of A and B is

A ∩ B = {4, 6, 8} ∩ {4, 5, 6} = {4, 6}

and has only 2 elements, so its power set has 2² = 4 elements (much more manageable!) and is the set

Pow(A ∩ B) = {{}, {4}, {6}, {4, 6}}

The statement that is an example of the distributive property is (c) 3(2+15)= 3(2) + 3(15)

The distributive property states that:

a(b + c) = a(b) + a(c)

Using the above property, we have:

3(2+15)= 3(2) + 3(15)

Hence, the statement that is an example of the distributive property is (c) 3(2+15)= 3(2) + 3(15)

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Answer:

Hi,

Step-by-step explanation:

sin(a-b)=sin(a) cos(b)+ cos(a) sin(b)

a=45° and b=30°

[tex]sin(45^o-30^o)=sin(45^o)*cos(30^o)+cos(45^o)*sin(30^o)\\\\=\dfrac{\sqrt{2}}{2}* \dfrac{\sqrt{3}}{2}+\dfrac{\sqrt{2}}{2}*\dfrac{1}{2}\\\\\\\boxed{sin(15^o)=\dfrac{\sqrt{2}}{4}*(1+\sqrt{3} )}\\[/tex]

Answer:

8- foot shadow? i am not sure

Answer:

i believe its 12 feet!

Step-by-step explanation:

assuming that the difference from the 6 foot giraffe with a four foot shadow is two feet, the 10 foot shadow would be two feet less then the giraffes height.

Answer: It's B.

Step-by-step explanation: It can't be A or D. The y-intercept is 2, not 4 so it is B.

Answer:

1-250 i think

Answer: B

Step-by-step explanation:

trust me bro

Answer:

In the right triangle, the side a=[tex]4[/tex] and the hypotenuse c=[tex]7[/tex].

To find: the value of x

We have,

[tex]a=6[/tex] and [tex]c=7[/tex]

Now,by the pythagorean theorem,

[tex] {a}^{2} + {b}^{2} = {c}^{2} [/tex]

Substitute the values,

[tex] {6}^{2} + {x}^{2} = {7}^{2} [/tex]

[tex]36 + {x}^{2} = 49[/tex]

Subtract 36 from each sides,

[tex] {x}^{2} = 13[/tex]

Take square root from each sides,

[tex]x = \sqrt{13} [/tex]

Hence, the value of x is [tex]\sqrt{13}[/tex].

The time taken for the candle to burn down to a height of 1.3 inches is 4.5 hours

A linear function is what can be written in the form of

y =mx+c

The rate at which the candle is burning is 0.6 inches/ hour

The initial height is 4 inches at t=0

The straight line equation can be written for this as

y =mx +c

as m = -0.6

at x = 0 , y = 4 therefore c =4

y = -0.6x +4

The time at which y = 1.3 inches is

1.3 = -0.6x +4

-2.7 = -0.6 x

x =4.5

4.5 hours is the time taken for the candle to burn down to a height of 1.3 inches.

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Upon searching for your question, I believe there are 8 [tex]\frac{1}{4}[/tex] cups, and not 814 cups.

Answer: 6 [tex]\frac{3}{4}[/tex] cups of water

Step-by-step explanation:

    First, we will turn 12 ounces into units of cups.

         12 / 8 = 1.5 cups

    Now, we will subtract the start of the month from the end of the month.

         8.25 cups - 1.5 cups = 6.75 cups

   Lastly, we will turn it into a mixed number.

         .75 = [tex]\frac{3}{4}[/tex]

         6 [tex]\frac{3}{4}[/tex] cups

     6 [tex]\frac{3}{4}[/tex] cups of water were added to the barrel during the month.

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The value of the variable t will be 13 / 12.

The analysis of mathematical representation is algebra, and the handling of those symbols is logic.

The equation is given below.

3t - 2/4 - 2t - 3/3 = 2/3 - t

Then the value of t will be

t - 3/2 = 2/3 - t

      2t = 2/3 + 3/2

      2t = 13 / 6

         t = 13/12

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By assuming that the motion of the plastic disc thrown by Mary is a projectile motion, the missing values are 4 and 3 respectively.

Since we're assuming that the motion of the plastic disc thrown by Mary is a projectile motion, it simply means that the motion can be represented by a quadratic function (parabolic).

For a projectile motion, the height of the disc at the time when it's at the top would be the same (equal). Thus, we can logically deduce that:

Height at time (t = 1 seconds) = Height at time (t = 5 seconds)

4 = A.

Similarly, Height at time (t = 0 seconds) = Height at time (t = 6 seconds)

3 = B.

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Answer:

[tex]\frac{1}{24}[/tex]

Step-by-step explanation:

(1/3)/(8/1)

cross multiply

(1*1=1)/(3*8=24)

1/24

Answer:



= 1/24

One third divided by eight is 1/24.





Step-by-step explanation:



first we make an equation then simplfy it further

⇒1/3 ÷ 8

convert the division sign into multiplication by using the mutiplicative inverse of 8

⇒1/3 × 1/8

multiply the numerators together and denominators together

⇒1/24 ...answer...

hope that helps...