Which Ratio is correct based on this diagram?



a
The ratio of ears to paws to tails is 4:2:1
b
The ratio of ears to paws to tails is 2:4:1
c
The ratio of ears to paws to tails is 7:4:1
d
The ratio of ears to paws to tails is 7:2:1

Answer:

D.

Step-by-step explanation:

The domain are x values that are included in a function. Asymptotes never touch those values, so -2 and 3 are not included in the domain; you must exclude them

Chase and Simon (1973) conducted a study on the memory of chess novices and experts for positions of chess pieces on a chessboard. They found that although experts generally have a better memory for chess positions than novices, novices performed equally or even better than experts when asked to recall random arrangements of chess pieces on the chessboard, even if the arrangements couldn't occur in a real game of chess.

One possible explanation for this phenomenon is that experts rely heavily on their knowledge of typical chess positions and patterns to remember the positions of the pieces. However, when the pieces are arranged randomly, these patterns are disrupted, and experts may struggle to apply their existing knowledge effectively. On the other hand, novices may not have developed strong patterns or strategies yet, so they approach the task with a more flexible mindset and are less affected by the random arrangement. They may use more general memory strategies, such as chunking or grouping the pieces together, which can be useful for recalling random arrangements.
In summary, novices may perform as well as experts when the pieces are arranged randomly because they rely less on established patterns and can use more general memory strategies to recall the positions.

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Answer:

See below ~

Step-by-step explanation:

Given

Solving

Solution

Answer:

The slope is just 2/3 and the y intercept is (0,3)

Answer:

16/9

Step-by-step explanation:

16/9=1.77777777778

(3/4)^-2=1.77777777778

An angle bisector of a triangle is a line segment that divides an angle into two congruent angles. In an equilateral triangle, all angles are congruent (60 degrees), so any line segment that divides an angle into two congruent angles is also an angle bisector.

To find the angle bisector of an equilateral triangle, you can use the following method:

Draw an equilateral triangle.

Choose an angle and draw the angle bisector from the vertex of the angle to the midpoint of the opposite side.

Since all the angles of an equilateral triangle are congruent, the angle bisector that you drew bisects any angle of the triangle.

Alternatively, you can use the following method:

Draw an equilateral triangle.

Connect the midpoint of one side of the triangle to the opposite vertex.

The segment that you drew bisects the angle of the triangle.

It is important to note that in an equilateral triangle, all medians, altitudes, angle bisectors, and perpendicular bisectors are congruent, they all divide the triangle in the same ratio, so they all meet at the same point, called the centroid, which is 2/3 of the distance from each vertex to the midpoint of the opposite side.

The mean of the sampling distribution of sample means is equal to the population mean.

In this case, it is 272 days.

a. The standard deviation (or standard error) of the sampling distribution of sample means can be calculated using the formula: σ_sample = σ_population / √n, where σ_sample is the standard error, σ_population is the population standard deviation, and n is the sample size. In this case, σ_sample = 14 days / √24 ≈ 2.86 days.

b. The graph of the sampling distribution of sample means will be a normal distribution with a mean of 272 days and a standard deviation of 2.86 days. The curve will be symmetrical around the mean value and will have a bell shape.

c. If the sample size is increased to 28, the mean of the sampling distribution remains the same (272 days) since it's equal to the population mean. However, the standard error will decrease because the sample size is larger: σ_sample = 14 days / √28 ≈ 2.65 days. The graph of this distribution will still be a normal distribution with a mean of 272 days, but it will be slightly narrower due to the smaller standard error of 2.65 days.

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Step-by-step explanation:

-22 < 4x - 2 ≤ 10

-20 < 4x ≤ 12

-5 < x ≤ 3

Answer:

97,988.216

Step-by-step explanation:

So, we can find this by using the following formula:

First value(change)^time

We know that the orginal, or first value, is 120,000.

We know that the time interval for this is 8 years, which is our time value.

We know that the decrease in this price is 2.5%. However, this is not our change.

Our change is the 97.5% price that is left.

This makes sense, because you would get a super small price when you use 2.5% as change.

So to sum up what we have done so far:

First value - 120,000

Change - 100%-2.5% = 97.5%. In decimal form: 0.975

Time - 8

So lets plug these into:

\(First_.value(change)^t^i^m^e\)

=

\(120,000(0.975)^8\)

And remember your order of operations here.

We dont have any equations or expressions inside the parethese, so we can move on to what comes next - exponents.

We have the exponent 8, which is attached to the 0.975.

So in your calculator, take 0.975, and put it to the 8th power.

You should get 0.816651803662261962890625

Lets leave it like this, becuase 120,000 is a very large value, and rounding what you multiply could change what you get in the end.

Now  our equation looks like:

120,000(0.816651803662261962890625)

We have done parethese, exponents - now we have multiplication and division.

We do indeed have this, since 120,000(0.816651803662261962890625) could also be written as:

\(120,000*0.816651803662261962890625\)

Now multiplying this you should get:

97,998.216439471435546875

This is where you can round your answer.

I do not know what exactly they want you to round to, so its safe to just round your answer to the hundreths place:

97,998.22

So this is the new price of the car!

Hope this helps!

oh I did a mistake earlier , pardon ^^"

Let price after 8 years be P.

Using the compound interest formula of shrinking principal :-

P = Pₒ( 1 - R/ 100) ᵀ

P = 120, 000 ( 1 - 2.5/ 100)ᵀ

P = 120, 000 { (100 - 2.5)/ 100}ᵀ

P = 120, 000{ 97. 5/ 100 }ᵀ

P = 120, 000 {0. 975 } ⁸

P = 120, 000 { 0. 8166}

P = 97,998.216 $

Since, P is is price after 8 years

The price of the car after 8 years will be 97, 998. 216 $

The diameter of cylinder is 2.28 cm and area of wrapper is 60.56π cm².

A cylinder is a three-dimensional solid figure which has two identical circular bases joined by a curved surface at a particular distance from the center which is the height of the cylinder.

Here, Given area of cylinder = 25π cm²

          Height of cylinder = 11 cm.

Now, Area of Cylinder = 2πrh

                  25π = 2πr X 11

                   25 = 22r

                    r = 25 / 22

                  r = 1.14 cm

Then, diameter = 2r = 2 X 1.14 = 2.28 cm

Now area of wrapper = total surface area = 2πr(r + h)

                                    = 2π X 2.28 (2.28 + 11)

                                   = 4.56π X 13.28

                                   = 60.56π cm²

Thus, the diameter of cylinder is 2.28 cm and area of wrapper is 60.56π cm².

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Answer:

A result that has been proved to be true (using operations and facts that were already known). Example: The "Pythagoras Theorem" proved \( {a}^{2} + b {}^{2} = {c}^{2} \) that for a right angled triangle.

Step-by-step explanation:

Hope it is helpful...

Answer:

Manisha age = 15 years

Step-by-step explanation:

Let

Manisha age = x

Amir = 2/3 of Manisha age

Amir = 10 years

Amir:

2/3 of x = 10

2/3 * x = 10

2/3x = 10

x = 10 ÷ 2/3

= 10 × 3/2

= (10*3)/2

= 30/2

= 15

x = 15 years

Therefore,

Manisha age = 15 years

Answer:

\(y = 18 \times {7}^{x} \)

Step-by-step explanation:

Using the formula for exponential function,

\(y = ab {}^{x} \)

Let plug in 0,18.

\(18 = ab {}^{0} \)

Using the zero power rule,

\(b {}^{0} = 1\)

\(18 = a \times 1\)

\(a = 18\)

Since a equal 18 let plug in what we know so far

\(y = {18b}^{x} \)

Now let find b.

Let use the other point, 3,6174

\(6174 = {18b}^{3} \)

Divide 18 by both sides and we get

\(343 = b {}^{3} \)

Take the 3rd root of 343

\( \sqrt[3]{343} = b = 7\)

b=7

The equation is

\(y = 18 \times 7 {}^{x} \)

The explicit formula for the nth term of the sequence 14,16,18,... is aₙ = 2n + 12.

What is an explicit formula?

The explicit equations for L-functions are the relationships that Riemann introduced for the Riemann zeta function between sums over an L-complex function's number zeroes and sums over prime powers.

Here, we have

Given:  the sequence 14,16,18,….

First term a₁ = 14

Common difference d = 16 - 14 = 2

Now, plug the values into the above formula and simplify.

aₙ = a₁ + d( n - 1 )

aₙ = 14 + 2( n - 1 )

aₙ = 14 + 2n - 2

aₙ = 14 - 2 + 2n

aₙ = 2n + 12

Hence,  the explicit formula is aₙ = 2n + 12.

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Answer:

375

Step-by-step explanation:

Formula+ Number x 100/percent= 345x100/92=375

Given: A 180 degree rotation of a vertical angle will always map to the other vertical angle

To Determine: The prove that the vertical angles are congruent

Draw and label to vertical lines with an angle

The 180 degree rotation of the vertical angle BOC would give:

Note that the other vertical would be AOD

The students should respond that

Hence, the 180 degree rotation of a vertical angle will always map to the other vertical angle which are congruent to each other because:

The vertical angles are vertically opposite to each other

Answer:

321 make me brainliest

Step-by-step explanation:

The number is 321.

Given that;

The written expression is,

''number is one hundred less than 421''

We have to find the number.

What is an expression?

Expression in math is defined as the collection of the numbers, variables and functions by using signs like addition, subtraction, multiplication, and division.

The written expression is,

''number is one hundred less than 421''

The mathematical expression is written as;

421 - 100 = 321

Hence, The number is 321.

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Answer:

a=−1/2

Step-by-step explanation:

Answer:

530.66 cm²

Step-by-step explanation:

Pizza has a circle shape

The formula for the area of the circle is

A = π · r²

r = 13 cm

π = 3.14

3.14 x 13² = 3.14 x 169 = 530.66 cm²

So, the area of the pizza is  530.66 cm²

Answer:

530.66cm^2

Step-by-step explanation:

since a pizza is in the shape of a circle, we can use the formula π\(r^{2}\) and here the radius is r which is 13cm, and since you asked to use 3.14 as pi's value,

=3.14*(13^2)cm

=3.14*169cm

is approximately = 530.66cm^2

Answer:

Option C .

Step-by-step explanation:

Here it is given that there are two species of birds which fly at different rates.

We can use the formula here ,

\(\longrightarrow \red{ Speed =\dfrac{Distance} {Time} }\)

For Species A :-

Substitute the respective values in stated formula ,

\(\longrightarrow v_A = \dfrac{18.9\ miles}{42min}\\\)

Simplify ,

\(\longrightarrow v_A = 0.45\ miles / min \)

For species B :-

Substitute the respective values in stated formula,

\(\longrightarrow v_B =\dfrac{20.3\ miles}{58min}\\ \)

\(\longrightarrow v_B = 0.35\ miles / min \)

Therefore from above calculations we can say that ,

\(\underline{\underline{ v_A > v_B }}\)

Species B is slower and it can fly 0.35miles/minute .

Answer:

D answer

Step-by-step explanation:

x=- 1/ 2 answer is d.

Given:

The expression is

\(\dfrac{1}{5}\cdot \dfrac{1}{5}\cdot \dfrac{1}{5}\cdot \dfrac{1}{5}\)

To find:

The expressions which are equivalent to the given expression.

Solution:

We have,

\(\dfrac{1}{5}\cdot \dfrac{1}{5}\cdot \dfrac{1}{5}\cdot \dfrac{1}{5}=\dfrac{1}{5^4}\)

\(\dfrac{1}{5}\cdot \dfrac{1}{5}\cdot \dfrac{1}{5}\cdot \dfrac{1}{5}=5^{-4}\)

In option A,

\((5^{-2})^2=5^{-2\times 2}\)

\((5^{-2})^2=5^{-4}\)

This expression is equivalent to the given expression.

In option B,

\((5^{-4})^0=5^{-4\times 0}\)

\((5^{-4})^0=5^{0}\neq 5^{-4}\)

This expression is not equivalent to the given expression.

Option C,

\(\dfrac{5^1}{5^4}=5^{1-4}\)

\(\dfrac{5^1}{5^4}=5^{-3}\neq 5^{-4}\)

This expression is not equivalent to the given expression.

Option D,

\(5^2\cdot 5^{-6}=5^{2-6}\)

\(5^2\cdot 5^{-6}=5^{-4}\)

This expression is equivalent to the given expression.

Therefore, the correct options are A and D.

Answer: Khan

Step-by-step explanation:

Kahn

Solution given:

1st term[a] :$34000

common difference [d]=$3500

20 th term=?

we have

nth term=a+(n-1)th term*d

20th term=$34000+(20-1)*$3500

Lillian make $100500in her 20th year working at this job.

The expected area of a random square which has a side length that is uniform random variable is 1/3.

A family of symmetric probability distributions includes the continuous uniform distribution and rectangular distribution. The distribution describes an experiment with a random result that falls within predetermined bounds.

 The parameters, a and b, which represent the minimum and maximum values, define the bounds. The interval may be closed (for example, [a, b]) or open (for example, (a, b)). common abbreviation for the distribution is U (a, b), where U stands for uniform distribution. 

The length of the interval is defined by the difference between the bounds; intervals with the same length on the distribution's support are equally likely.

Let, side of the square = X

we know that the area of a square = side × side

                                                          =  X  ×  X

                                                          =  X^{2}

now, by using Continuous uniform distribution,

E[ X^{2} ] =  \(\int\limits^1_0 X^{2} \, dx\)    

                =  \([\frac{1^{3} }{3} - \frac{0^{3} }{3} ]\)

                =  \(\frac{1}{3}\)

Hence , the expected area of the square is \(\frac{1}{3}\).

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Step-by-step explanation:

We can use trigonometry to solve this problem. Let's draw a diagram:

```

A - observer (1.5 m above ground)

B - base of the clock tower

C - top of the clock tower

D - intersection of AB and the horizontal ground

E - point on the ground directly below C

C

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B

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A

```

We want to find the height of the clock tower, which is CE. We have the angle of elevation ACD, which is 19 degrees, and the distance AB, which is 100 m. We can use tangent to find CE:

tan(ACD) = CE / AB

tan(19) = CE / 100

CE = 100 * tan(19)

CE ≈ 34.5 m (rounded to 1 decimal place)

Therefore, the height of the clock tower is approximately 34.5 m.