Please help quick if you know the answer

Answer:

d

Step-by-step explanation:

Answer:

The circumference is [tex]23.236\ in[/tex]

Step-by-step explanation:

we know that

The circumference of a circle is equal to

[tex]C=2\pi r[/tex]

we have

[tex]r=3.7\ in[/tex]

substitute

[tex]C=2(3.14)(3.7)=23.236\ in[/tex]

Answer:

198

Step-by-step explanation:

Of means multiply and 22% as a decimal is 0.22, so multiply 0.22 by 900.

900*0.22=198

Answer:

7 groups.

Step-by-step explanation:

We have been given that Isaac has 21 green marbles and 7 blue marbles. He wants to place them in identical groups without any marbles left over.

To find the greatest number of groups Issac can make we will find the GCF of 7 and 21.

Factors of 7 are: 1, 7.

Factors of 21 are: 1, 7, 3, 21.

We can see that 7 is the greatest common factor of 7 and 21, therefore, Issac can make 7 groups from 21 green marbles and 7 blue marbles.

Let us find number of each type of marble is each group.

[tex]\text{Number of green marbles in each group}=\frac{21}{7}[/tex]

[tex]\text{Number of green marbles in each group}=3[/tex]

Therefore, there will be 3 green marbles in each group.

[tex]\text{Number of blue marbles in each group}=\frac{7}{7}[/tex]

[tex]\text{Number of blue marbles in each group}=1[/tex]

Therefore, there will be 1 blue marble in each group.

To find the perimeter of the quarter circle, the radius is first calculated using the area, and then the perimeter formula for a circle is applied, adjusting the final calculation to include the straight edges of the quarter circle.

The student has provided the area of a quarter circle and is seeking to find its perimeter. The area of the full circle can be found by multiplying the quarter circle area by 4, yielding an area of 3.14 square kilometers (since the area of a quarter circle is 0.785 square kilometers). Using the formula for the area of a circle, A = πr², we can solve for the radius (r).

Let's calculate the radius of the circle:

Now, the perimeter (or circumference) of the full circle is given by the formula P = 2πr. For a quarter circle, the perimeter includes the arc of the quarter circle and the two radii.

The perimeter of the quarter circle is thus:

But since we know the measurements are to a certain precision, we must adjust our answer accordingly:

The final perimeter of the quarter circle, rounded to an appropriate number of significant figures based on the original measurement given, is approximately 3.57 km.

Answer:

Please Vote 1 Star

Step-by-step explanation:

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To represent the situation, the function can be written as f(t) = 35000 × (1 + 0.04)^t, where t represents the number of years into the future.

To write a function in terms of t that represents the situation, we can start with the initial salary of $35,000 and then calculate the annual increase using the 4% growth rate.

We need to multiply the current salary by (1 + 0.04) to get the new salary for each year. The function can be written as:

f(t) = 35000 × (1 + 0.04)^t

Here, t represents the number of years into the future from the initial starting point.

For example, if you want to find the salary after 3 years, you can plug in t = 3 into the function.

A function that represents your annual salary starting at $35,000 and increasing by 4% each year,
[tex]S(t) = 35000 * (1 + 0.04)^t[/tex], where t is the number of years.

To create a function that represents your annual salary starting at $35,000 and increasing by 4% each year,
we use the formula for exponential growth,
[tex]final amount = initial amount * (1 + growth rate)^t^i^m^e.[/tex]
Given that your initial salary is $35,000 and the growth rate is 4% (or 0.04),
let's define the function S(t) where S represents your salary and t represents the number of years:

   [tex]S(t) = 35000 * (1 + 0.04)^t[/tex]
the initial salary=$35,000.

Convert the percentage increase to a decimal,
4% becomes 0.04.

Set up the function using the formula for exponential growth,
which is initial amount multiplied by [tex](1 + growth rate) ^t[/tex]

Thus, for any year t, the function [tex]S(t) = 35000 * (1 + 0.04)^t[/tex] calculates your annual salary.

Wade placed the muffins in the oven at 10:17 AM; they will be ready to eat after baking and cooling at around 10:54 AM. The statements about eating the muffins at 10:39 PM and taking them out at 10:39 PM are false, while the statement about taking them out at 10:39 AM is true.

To calculate when Wade can eat the muffins we must add the baking time and cooling time to the time he put the muffins in the oven. Wade puts the muffins in at 10:17 am and the muffins need to bake for 22 minutes. After baking, they need 15 minutes to cool.

First, the muffins would be done baking at 10:39 am (10:17 am + 22 minutes). Then, after cooling for at least 15 minutes, Wade can eat the muffins at 10:54 am (10:39 am + 15 minutes).

Answer:

5 to the power of 8

Step-by-step explanation:

The perimeter of Mark's deck in real life is calculated by converting the layout measurements to actual measurements using the scale factor and then applying the perimeter formula. The perimeter is found to be 160 meters.

To calculate the perimeter of Mark's deck, which is represented on a layout where the scale is 1 centimeter = 10 meters, we use the perimeter formula for a rectangle: Perimeter (P) = 2 * (length + width). Since both the length and width of Mark's deck are provided as 4 centimeters each, and each centimeter corresponds to 10 meters in reality, we first convert the measurements from centimeters to meters by multiplying them by the scale factor.

Length in meters = 4 cm * 10 meters/cm = 40 meters
Width in meters = 4 cm * 10 meters/cm = 40 meters

Now, calculate the perimeter:

P = 2 * (40 meters + 40 meters)
P = 2 * 80 meters
P = 160 meters

The real-life perimeter of Mark's deck is 160 meters.

Answer:

C

Step-by-step explanation:

A person who makes faces all day is often described as expressive or animated, and may be humorously termed a 'mugger' or 'face-puller'. Facial expressions are crucial for conveying emotion in human interaction and can be particularly striking in literature and dramatic performances.

The question 'What do you call a person who makes faces all day long?' is asking about a term or description for someone who frequently changes their facial expressions. While there is no specific term that describes this behavior in a clinical or professional sense, in a colloquial context, you might call such a person expressive, animated, or if the expressions are humorous or exaggerated, a 'mugger' or 'face-puller'. In literature and drama, characters known for their expressive faces can bring a story to life or provide comic relief.

Facial expressions are an integral part of human communication. They can underscore the emotional state of a person, such as the sense of pride on the face of a monomaniacal king, the devotion seen in a religious fanatic, or the terror described in the imagery of wallpaper patterns appearing to have expressive eyes. Whether in social interactions, literature, or public speaking, the alignment of facial expressions with spoken words is important for conveying meaning and emotion.

In right triangle the leg is geometrical mean of its projection on the hypotenuse and the hypotenuse. Thus,

[tex] AB^2=BD\cdot BC [/tex].

Substitude BC=16, BD=9, then

[tex] AB^2=9\cdot 16,\\ AB^2=144,\\ AB=12 [/tex].

Answer: AB=12

The area of triangle ABC, given that it is similar to triangle DEF with an area of 90, cannot be estimated without the ratio of corresponding sides. Areas of similar triangles are proportional to the square of the ratio of their corresponding sides.

To estimate the area of triangle ABC given that triangle ABC is similar to triangle DEF, and the area of triangle DEF is 90, we first need to understand that the areas of similar triangles are proportional to the square of the ratio of their corresponding sides. However, without knowing the specific ratio of the corresponding sides of triangles ABC and DEF, we cannot calculate the exact area of triangle ABC.

For example, if we knew that every side of triangle ABC was twice as long as the corresponding sides of triangle DEF, the area of triangle ABC would be 4 times the area of triangle DEF, because the area is proportional to the square of the side lengths (2 squared is 4). In this case, if the area of DEF is 90, then the area of ABC would be 90 × 4 = 360.

Without the ratio of the sides, we can't directly calculate the area of triangle ABC from the area of triangle DEF. The relationship between similar triangles and their areas illustrates an important geometric principle, but requires specific information about the ratio of corresponding linear dimensions to make an estimation.

Final answer:

In mathematics, 'squaring the circle' means to create a square with the same area as a given circle, though it is impossible to achieve precisely due to the nature of π. When fitting a circle in a square, the side of the square is twice the radius of the circle, and the circle's area is approximately three-quarters that of the square.

Explanation:

To "square a circle" in mathematical terms traditionally means to create a square with the same area as a given circle, using only a finite number of steps with compass and straightedge. This problem is known to be impossible to solve exactly due to the transcendental nature of π (pi). However, when we discuss fitting a circle within a square, we often refer to having the diameter of the circle, which is twice the radius (2r), fit exactly across the side length of the square (a).

The area of the circle is πr², and when the circle fits within a square the area of the square is a². Since a = 2r, the area of the square can be expressed as 4r². From this, we can approximate that a circle's area would be less than the area of the square but more than half, possibly around three-quarters, thus approximately 3r².

Perimeter-wise, a circle within a square would have a circumference less than the perimeter of the square but significantly longer than a straight line passing through the center of the square. This understanding allows for practical estimations without requiring exact precision, which can be particularly useful in everyday contexts where an approximation suffices.

Answer:

The correct answer would be 0.68. I just took the test, your welcome :)

Step-by-step explanation:

The relative frequency, by row, of students who do not like rap or hip-hop is:

                                0.68

                                   Like Rap Do Not Like Rap Total

Like Hip-Hop                  35                      8                   43

Do Not Like Hip-Hop  10                     21            31

          Total                   45                     29            74

The relative frequency by row of an outcome is calculated as the ratio of the frequency corresponding to the outcome to the total of the row.

Total of a row is: 31

The number of students who did not like Rap or Hip-Hop is: 21

Hence, the relative frequency is: 21/31=0.6777

which is approximately equal to 0.68