francesca has many flowers to plant, and the square is too small to hold them all. continue your construction to add a regular octagon inscribed in the circle. sketch the result. use the red pencil to join the vertices of the octagon. (hint: use the vertices of the square as four of the vertices of the octagon.) (3 points)

explain how you constructed the regular octagon

how do you know that all sides of the octagon are congruent? justify your conclusion

i'm rly stuck pls help by tmrw

Answer:

8. 822

9. 1582

10. 1936

11. 8200

Step-by-step explanation:

Section 1

Answers:

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

Explanation:

The abbreviation d.p. means decimal places

When rounding to 2 decimal places, we look at the digit in the third decimal place value slot (thousandths place). If the value is 5 or larger, then we round up. In the case of 1.6962, the second 6 tells us to round 1.69 up to 1.70

Something like 0.4247 does not round up because that second 4 is not 5 or larger. So we just are left with 0.42

The same logic applies to three decimal places, but you'll look in the fourth slot this time.

===================================================

Section 2

Answers:

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

Explanation:

Recall that for a number like 32500, the 0s are not significant. This is because we can write that as 3.25 * 10^4 to convey the same idea. The only significant figures are 3, 2 and 5.

So when rounding 32549 to 3 sig figs, we just pick on the three left most values, and the rest go to 0. The 325 does not round up to 326 because the '4' isn't 5 or larger. Put another way: 32549 is closer to 32500 than it is to 32600

When rounding 909520 to three sig figs, it turns into \(91\overline{0}000\). The line over the first '0' tells us that zero is significant. Without this bar, the zero would be considered not to be significant. The 9095 is closer to 9100 than it is to 9000, so that's why we rounded up.

Answer:

y=2 x=5

Step-by-step explanation:

3x-2y=11

2x-3y=4

you multiply both equations to cancel one variable out. in this case you multiply the first equation by 2 and the second by -3

     6x-4y=22

+    -6x-9y=12

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

0x+5y=10

y=2

you plug that in either equation

3x-2(2)=11

3x-4=11

3x=15

x=5

Answer:

The answer is A.

Step-by-step explanation:

Just answered the question

Answer:

I can't decide

Step-by-step explanation:

Answer:

Mine is one piece and kumo desu nani ga i love it lol

Step-by-step explanation:

Answer:

$10.07

Step-by-step explanation:

Well you have to subtract 53.43 from 33.29 which equals 20.14 then you have to divide 20.14 by 2 and you get $10.07.

The linear model for this data is y = 0.63t + 4.922 and the estimated population of Greensboro in 2015 was 11,530

What is slope?

Slope is a measure of the steepness of a line. It is defined as the change in y-coordinate divided by the change in x-coordinate between any two points on the line.

a. To find the linear model for this data, we need to determine the equation of the line that passes through the two given points: (0, 4.922) and (6, 9.1). The slope of this line can be calculated as:

slope = (change in y) / (change in t)

slope = (9.1 - 4.922) / (6 - 0)

slope = 0.63

Using the point-slope form of a linear equation, we can write the equation of the line as:

y - 4.922 = 0.63(t - 0)

Simplifying, we get:

y = 0.63t + 4.922

Therefore, the linear model for this data is y = 0.63t + 4.922.

b. To estimate the population in 2015, we need to find the value of y when t = 11 (since 2015 is 11 years after 2004). Substituting t = 11 into the linear model, we get:

y = 0.63(11) + 4.922

y = 11.53

Therefore, the estimated population of Greensboro in 2015 was 11,530 (rounded to the nearest whole number).

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On subtracting 20 from twice a number we get 50, then the number is 35 in this context.

This is referred to as a type of mathematical operation in which one number is taken or deducted from the other and the sign is ( - ). this expression is used in every facet of life for their daily activities.

We were told that 20 was subtracted from twice a number to give 50 which means that twice the number is 70. The exact number will therefore be 70/2 which will then result in 35 and is therefore the most appropriate choice.

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Hence, according to the question given, we have Jenny got 21 large buttons.

A ratio is a mathematical relationship between two values that are usually expressed as the quotient of one value divided by the other. In order to compare or explain the relative sizes of two or more quantities, ratios can be used.

A particular kind of ratio called a proportional relationship is one in which the ratio between the two quantities is constant. To put it another way, if you increase one amount by a specific factor, the other amount will also be multiplied by that same factor.

Jenny purchased a bag of mixed buttons containing 30 total buttons,70% were large.

We can use the following method to determine how many large buttons she received:

number of large buttons = percentage of large buttons x total number of buttons

By substituting the provided values, we get the following:

number of large buttons = 70% x 30 buttons

                                         = 0.7 x 30 buttons

                                         = 21 buttons

Therefore, Jenny got 21 large buttons in the bag of mixed buttons.

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a.  A statistical test used to help answer the question of whether an observed difference is real or just due to chance error- true

The statistical test referred to in the question is known as a hypothesis test. It is used to determine the probability that the observed difference between two groups or variables is not due to chance but rather represents a true difference. The test involves setting up a null hypothesis, which assumes that there is no difference between the groups or variables, and an alternative hypothesis, which assumes that there is a real difference.

The test calculates a p-value, which represents the probability of obtaining the observed difference by chance if the null hypothesis is true.

If the p-value is below a predetermined level of significance (usually 0.05), then the null hypothesis is rejected and the alternative hypothesis is accepted.

This means that the observed difference is considered real and not just due to chance error.

Hence, If the p-value is below a certain level of significance, the null hypothesis is rejected and the alternative hypothesis is accepted, indicating that the observed difference is real.

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The board is 3 1/6 feet left. The correct option is C.

To find out how much of the board is left, we need to subtract the length of the section that was cut off from the original length of the board:

6 2/3 - 3 1/2

To subtract these two mixed numbers, we need to find a common denominator. The smallest common denominator of 3 and 2 is 6:

Next, we can simplify the fractions,

62/3 - 3 1/2

= 20/3 - 7/2

= (40 - 21)/6

= 19/6

= 3 1/6 feet.

Therefore, the answer is C. 3 1/6 feet.

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Answer:

___________________________________________________________

FACTS TO KNOW BEFORE SOLVING :-

___________________________________________________________

According to the question ,

a) \(\sqrt{18} =\sqrt{9 \times 2} = \sqrt{9} \times \sqrt{2} = 3\sqrt{2}\)

b) \(\sqrt{12} =\sqrt{4 \times 3} = \sqrt{4} \times \sqrt{3} = 2\sqrt{3}\)

c) \(\sqrt{32} = \sqrt{16 \times 2} = \sqrt{16} \times \sqrt{2} = 4\sqrt{2}\)

Answer:

7 inches

Step-by-step explanation:

Volume 1 - 300 pages 2 inches

back cover 1/4 inch

Volume 2 - front cover 1/4 inch

300 pages 2 inches

back cover 1/4 inch

Volume 3 - front cover 1/4 inch

300 pages 2 inches

Answer:

82 + (12 + 3 + 4) -10 = 91

82 + (12 times 3 + 4) -10 = 156

82 + (12 divided by 3 + 4) -10 = 73.71

82 + (12 - (3+4)) -10 = 77

I wasn't sure what the space between the 12 and the 3 + 4 meant so I put the answers to what it could have possibly meant.

Answer:

80°

Step-by-step explanation:

m<COB = 80°, it's the central angle for arc CB,

so mCB = 80°

well, let's move like the crab, backwards, let's start with b), then we'll do a)

b)

\({\Large \begin{array}{llll} y=ab^x \end{array}} \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} x=2\\ y=75 \end{cases}\implies 75=ab^2 \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} x=5\\ y=9375 \end{cases}\implies 9375=ab^5\implies 9375=ab^{2+3}\implies 9375=ab^2 b^3\)

\(\stackrel{\textit{substituting from the 1st equation}}{9375=\underset{ab^2}{(75)} b^3}\implies \cfrac{9375}{75}=b^3\implies 125=b^3 \\\\\\ \sqrt[3]{125}=b\implies \boxed{5=b}\hspace{5em}\stackrel{\textit{we know that}}{75=ab^2}\implies 75=a5^2\implies 75=25a \\\\\\ \cfrac{75}{25}=a\implies \boxed{3=a}\hspace{5em} {\Large \begin{array}{llll} y = 3(5^x) \end{array}}\)

a)

\(\begin{cases} x=0\\ y=j \end{cases}\implies j=3(5^0)\implies j=3(1)\implies j=3 \\\\\\ \begin{cases} x=4\\ y=k \end{cases}\implies k=3(5^4)\implies k=3(625)\implies k=1875\)

Answer:

Second from top

  f(x) = 25(5)ˣ

Step-by-step explanation:

Spot check:

x = 2, f(x) = 625

 f(x) = 25(5)ˣ

 f(x) = 25(5)² = 25(25) = 625

x = -1, f(x) = 5

 f(x) = 25(5)ˣ

 f(x) = 25(5)⁻¹ = 25(0.2) = 5

Answer: 6a³-14a²-43a+12

Step-by-step explanation:

Explanation is in picture.

Answer:

14

Step-by-step explanation:

Answer:

hope it's helpful. good luck

Answer: 2²¹/₄₀

Step-by-step explanation:

\(\displaystyle\\4\frac{1}{8}-1\frac{3}{5} =\\\\\frac{4*8+1}{8} -\frac{1*5+3}{5}=\\ \frac{32+1}{8} -\frac{5+3}{5} =\\\\\frac{33}{8}-\frac{8}{5} =\\\\ \frac{33*5-8*8}{8*5}=\\\\ \frac{165-64}{40} =\\\\\frac{101}{40}=\\\\ 2\frac{21}{40}\)

The area of the given figure is 94.29 \(in^{2}\).

An object of area is how much space it takes up in 2-D. It is the measurement of object is unit squares than , completely cover the surface of a closed figure. The square unit, is frequently expressed as square inches, square feet,square meter,etc. is the accepted unit of area.

A shape is created by combining multiple  shapes is known as a composite figure. We add up all of outside sides of shape to find the perimeter. We  calculate the areas of each independently, and then add the resulting areas to determine the area.

First of all ,we will find the area of, the triangle.

The formula for area of a triangle =\(\frac{1}{2} *base* height\).

According to question ,

base of triangle = 10 in.

Height of triangle =11 in.

value of base and height  substitute in formula than we get,

area of a triangle =\(\frac{1}{2} * 10 * 11\)

area of a triangle= 1* 5*11

area of a triangle= 55 \(in^{2}\).

Now,we will find the area of semi circle,

The formula for area of semi circle  =\(\frac{1}{2} \pi r^{2}\)

According to question ,

\(r=\frac{10}{2} =5 in.\) and use \(\pi =\frac{22}{7}\)

area of semi circle=

\(=\frac{1}{2} *\frac{22}{7}*5^{2} \\\\=\frac{1}{2} *\frac{22}{7}*25\\\\=\frac{11}{7}*25}\\\\=1.57*25\\\\=39.29 in^{2}\)

Now,area of given shape =

\(55 in^{2}+39.29 in^{2}\\\\=94.29 in^{2}\)

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Answer: Elm Street Bookstore has 1,272 books.

Step-by-step explanation:

Read the problem: Main Street Bookstore has 3,132 books. They have 4 times as many books as Water Street Bookstore. Water Street Bookstore has 489 fewer books than Elm Street Bookstore. How many books does Elm Street Bookstore have?

Highlight facts: Main Street Bookstore has 3,132 books. They have 4 times as many books as Water Street Bookstore. Water Street Bookstore has 489 fewer books than Elm Street Bookstore. How many books does Elm Street Bookstore have?

Draw a picture: I drew a diagram to represent the relationships between the bookstores.

Assign variables: Let x be the number of books that Elm Street Bookstore has, y be the number of books that Water Street Bookstore has, and z be the number of books that Main Street Bookstore has.

Write equations: Based on the facts, I can write three equations:

z = 4y (Main Street Bookstore has 4 times as many books as Water Street Bookstore)

y = x - 489 (Water Street Bookstore has 489 fewer books than Elm Street Bookstore)

z = 3,132 (Main Street Bookstore has 3,132 books)

Solve for x: I can substitute y and z in the first equation with the expressions from the second and third equations:

3,132 = 4(x - 489)

Simplify and solve for x:

3,132 = 4x - 1,956

5,088 = 4x

x = 1,272

Check the answer: I can plug in x = 1,272 in the other equations and see if they are true:

y = x - 489

y = 1,272 - 489

y = 783

z = 4y

z = 4(783)

z = 3,132

All the equations are true, so x = 1,272 is the correct answer.

Hope this helps, and have a great day! =)

\( \bf \implies{\angle{JND} = 57 \degree}\)

\( \bf \longrightarrow{\angle{BNL} = 33 \degree}\)

\( \bf \longrightarrow{\angle{JND} = \: ?}\)

\( \bf \longrightarrow \: \: \: \angle{BNL} = \angle{DNS} \: \\ \: \: \: \bf [Verically \: Opposite \: Angle]\)

\( \bf \therefore\angle{DNS } = 33 \degree\)

\( \bf \longrightarrow \angle{JND} + \angle{ DNS} = 90 \degree \\ \bf \: \: \: \: \: \: \: \: \: [form \: a \: right \: angle]\)

\( \bf \longrightarrow \angle{JND} +33 \degree= 90 \degree\)

\( \bf \longrightarrow \angle{JND}= 90 \degree - 33 \degree\)

\( \bf \longrightarrow \angle{JND}= 57 \degree \)

Answer:

four nine dollar books

Step-by-step explanation:

36 divivded by 9

Answer:

1,262.5

according to the calculator lol

Answer:

17×3297÷47+70=​

Step-by-step explanation:

1262.53191489

Answer:

X=120 and y=10,z=120

Step-by-step explanation:

corresponding angles

thus 120=(13y-10)=x

Answer:

The tip amount is $7.80.

Step-by-step explanation:

To calculate the tip amount, you can multiply the bill amount by the tip percentage.

Tip amount = Bill amount * Tip percentage

In this case, the bill amount is $39 and the tip percentage is 20%.

Tip amount = $39 * 0.20 = $7.80

Rounding the answer to the nearest hundredth, the tip amount is $7.80.

Answer:

$7.80

Step-by-step explanation:

$39 x 0.2 = $7.80

The given function is F(x, y, z) = x^2 + y^2 + z^2, subject to the constraint z = x^2 + y^2 = 49 and 0 ≤ z ≤ 49.

The objective of the problem is to find the minimum or maximum value of the function F(x, y, z) = x^2 + y^2 + z^2, while satisfying the constraint z = x^2 + y^2 = 49 and the range of 0 ≤ z ≤ 49.

This means that we need to optimize the value of F(x, y, z) within the given constraints.

To solve this problem, we can use the method of Lagrange multipliers. By introducing a Lagrange multiplier λ, we can set up the following equations:

2x = 2λx,

2y = 2λy,

2z = 2λ(z - 49),

x^2 + y^2 - 49 = 0.

By solving these equations simultaneously, we can find the values of x, y, z, and λ that satisfy the equations and the given constraints.

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Answer: 1,096 cups

Step-by-step explanation:

Answer: 1096 cups left.

Step-by-step explanation: 20% of 5,480 is 1096.  This is accurate because 20% is one-fifth of 100%.  In this case, 5,480 is our 100%.  When you divide 5,480 by 5, you get the answer 1,096, which is 20% of the 5,480 cups that Eric started with.

Have a great day! :)

Answer: 1 left

Step-by-step explanation:

2-1 = 1