Pls help with this and explain why it is wrong

6. a) In 10 squares there are 22 dots

6. b) There are 102 squares are in the diagram which has 104 dots.

6. c) t(n) = a + (n - 1) d

7. a) mean = 6; median = 5

7. b) new card number = 14

This can be solved using geometic series concept.

A geometric series is one where each pair of consecutive terms' ratios is a fixed function of the summation index. The ratio is a rational function of the summation index in a more comprehensive sense. creates what is known as a hyper geometric sequence. It is arithmetic if there is a common difference between the sequences. You can bet that anything is geometric if it has a common ratio. Similar to how the word arithmetic series denotes that each phrase is the arithmetic mean of its two neighbors, the name geometric series denotes that each term is the geometric mean of its two neighbors.

6. In the given figure we see that the dots are present here form a series.

In 1 square there are 4 dots.

In 2 squares there are 6 dots.

In 3 squares there are 8 dots.

So, they form a series.

a)

In 10 squares there are 22 dots

b)

There are 102 squares are in the diagram which has 104 dots.

c)

The formula of the series is:

t(n) = a + (n - 1) d

here a = 4 and d = 2

7.

a)

Jemina has 3 cards with the number of 5,2 and 11

Thus, mean = 5+2+11 /3 = 6

median = 5

b)

Next Jemina takes another card and the mean goes up by 2.

So, the number of new card:

2+5+x+11/4 = 8

or, 18 + x = 32

or, x = 14

So, new card number = 14

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Answer:

Step-by-step explanation:

6. a) In 10 squares there are 22 dots

6. b) There are 102 squares are in the diagram which has 104 dots.

6. c) t(n) = a + (n - 1) d

7. a) mean = 6; median = 5

7. b) new card number = 14

Answer:

3.06

Step-by-step explanation:

Answer:

You will get $3.06 back

Step-by-step explanation:

Add 5.97 + 5.97 = 11.94

then if you give the cashier $15 subtract what you owe, so 15 - 11.94 = 3.06

The expression matched with each scenario is;

Scenario 1: 0.82x

Scenario 2: 1.18x

Scenario 3: 7/10x

Scenario 4: 13/10x

The price of a game that’s been discounted

18% off its list price (x)

Total price = x

Discount = 18%x = 0.18x

New price = x - 0.18x

= 0.82x

The price of a toy that sells for 18% more

than the amount (x) needed to build the toy

Original price = x

Percentage increase = 18%x = 0.18x

New price = x + 0.18x

= 1.18x

The volume of water remaining in a tank after 3/10 of its original volume (x) is drained out

Original volume = x

Volume drained = 3/10x

New volume = x - 3/10x

= 7/10x

The total amount of flour in a bakery after receiving new stock equal to 3/10 of its current stock (x)

Original stock = x

New stock = 3/10x

Total stock = x + 3/10x

= 13/10x

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I put A before and my post was deleted.....

Answer:

0.5 = 50%, 3/4 = 75%

Step-by-step explanation:

Answer:

-9.45238095238

Step-by-step explanation:

Just use the fraction to add to the whole number

Answer:

=−14.73809524

Step-by-step explanation:

The value of angle x in the triangle is 15°

Given: the triangle ABC with equal sides of 9 units.

Since the triangle has equal sides, it will also have equal angles (i.e. it is an equilateral triangle).

Thus, <A = <B = < C =  4x°

Since the sum of angles in a triangle is 180°. We have:

<A + <B + < C = 180°

4x + 4x + 4x = 180°

12x = 180

x = 180/12

x = 15°

Therefore, the value of x is 15°

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9514 1404 393

Answer:

  160 cm³

Step-by-step explanation:

The ratio of the linear dimensions is the square root of the ratio of areas:

  scale factor B/A= √(64/144) = 8/12 = 2/3

The ratio of volumes is the cube of the scale factor:

  (volume B)/(volume A) = (2/3)³ = 8/27

Then the volume of pyramid B is ...

  volume B = (volume A) × (volume B)/(volume A)

  = (540 cm³) × (8/27) = 160 cm³ . . . . volume of pyramid B

_____

Equivalently, the ratio of volumes is the 3/2 power of the ratio of areas.

 Vb = Va(64/144)^(3/2) = (540 cm³)(4/9)^(3/2) = (540)(8/27) cm³ = 160 cm³

The domain of (boa)(x) is [1, ∞].

In Mathematics and Geometry, a domain is the set of all real numbers (x-values) for which a particular equation or function is defined.

Based on the information provided above, we have the following functions:

a(x) = 3x+1

\(b(x) = \sqrt{x-4}\)

Therefore, the composite function (boa)(x) is given by;

\(b(x) = \sqrt{3x+1 -4}\\\\b(x) = \sqrt{3x-3}\)

By critically observing the graph shown in the image attached below, we can logically deduce the following domain:

Domain = [1, ∞] or {x|x ≥ 1}.

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the answer is on the page it is a screenshot explaining how to do it

When x = 13, the equation that is true is option D) 5(x - 9) = 20.

To determine which equation is true when x = 13, we can substitute the value of x into each equation and see which equation holds true. Let's go through each option:

A) 3(18 - x) = 67

Substituting x = 13:

3(18 - 13) = 67

3(5) = 67

15 = 67

The equation is not true when x = 13. Therefore, option A is false.

B) 4(9x) = 23

Substituting x = 13:

4(9*13) = 23

4(117) = 23

468 = 23

Again, the equation is not true when x = 13. Therefore, option B is also false.

C) 2(x - 3) = 7

Substituting x = 13:

2(13 - 3) = 7

2(10) = 7

20 = 7

Once again, the equation is not true when x = 13. Therefore, option C is false as well.

D) 5(x - 9) = 20

Substituting x = 13:

5(13 - 9) = 20

5(4) = 20

20 = 20

Finally, the equation is true when x = 13. Therefore, option D is true.

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Note: the translated questions is

X = 13, which equation is true?

The confidence interval for the slope of the regression line relating performance score is 0.71
                   
sample size (n) = 20

slope (b1) = 3.92 and SE of slope = 0.71

Degrees of freedom = 20 - 2 = 18          

Using t-table we get, t-critical value at significance level of 0.10 with 18 degrees of freedom is,

tα/2=1.734

The 90% confidence interval for the slope of the regression line relating performance score and time to fatigue is,

B1±Tα/2*SE

3.92±1.734(0.71) (c)

Regression analysis is a statistical measure that is used in many different fields, including investing, finance, sales, marketing, science, mathematics, and others. It tries to figure out how closely one dependent variable is related to a set of other changing variables. They are commonly referred to as independent variables.

For example, how commodity prices relate to the shares of companies that trade in those commodities.


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The total number of rings available for selection is 1350.

The combination is a process of knowing the number of ways of selecting a smaller set of articles from a larger set of articles where the order of selection is invariant.

If we select r items from n items in no particular order, the number of ways of doing so is calculated using combinations by the formula:

nCr = n!/{ r! (n - r)! }.

In the question, we are given that to order a class ring, students must decide on gold, silver, or white gold band and one of 15 stones. They must also choose from one of 30 activity symbols to put on the side.

We are asked the number of different ring selections there.

For the band:

Options  available, n = 3.

Options to select, r = 1.

Thus, using combinations, the number of ways of selecting 1 band from 3 bands = 3C1 = 3!/{1! (3 - 1)! } = 3!/1!2! = 3.

For the stone:

Options available, n = 15.

Options to select, r = 1.

Thus, using combinations, the number of ways of selecting 1 stone from 15 stones = 15C1 = 15!/{1! (15 - 1)! } = 15!/1!14! = 15.

For the symbol:

Options  available, n = 30.

Options to select, r = 1.

Thus, using combinations, the number of ways of selecting 1 symbol from 30 symbols = 30C1 = 30!/{1! (30 - 1)! } = 30!/1!29! = 30.

The total number of rings available is the product of the three.

Thus, the total number of rings available for selection = 3*15*30 = 1350.

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Answer:

y = 25x + 200

Step-by-step explanation:

y =  the total cost of the party

x = the number of guests

75/3 = 25

25 is the cost per guest.

Helping in the name of Jesus.

Answer:

∠ ABC = 49°

Step-by-step explanation:

the chord- tangent angle ABC is half the measure of the intercepted arc AB

∠ ABC = \(\frac{1}{2}\) AB = \(\frac{1}{2}\) × 98° = 49°

The scale factor that was used to convert triangle ABC into the image in A ' B ' C ' is 1 / 2.

To find the scale factor, you need to find the length of a side of triangle ABC and then the length of the corresponding side in A ' B ' C '.

The side length we will pick is AB which is:

= 6 - 2

= 4 units

The side length of the other triangle is A' B' :

= 3 - 1

= 2 units

The scale factor is:

= 2 / 4

= 1 / 2

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Answer:

0,34

Step-by-step explanation: when you do x2-x1/y2-y1 with the coordinates you get slope plug that in the the y= mx+b equation with any one of the coordinates and you get the y intercept.

Answer:

Please see steps below

Step-by-step explanation:

Notice the following:

(a) Angles 5 and 1 are alternate angles between parallel lines, and then they must be congruent (equal in measure)  \(\angle 1 \,=\,\angle 5\)

(b) Angles 6 and 3 are also alternate angles  between parallel lines, so they must be congruent (equal measure)  \(\angle 3 \,=\,\angle 6\)

Therefore, instead of expressing the addition:

\(\angle 5\,\,+\,\,\angle 2\,\,+\,\,\angle 6\)

we can write:

\(\angle 1\,\,+\,\,\angle 2\,\,+\,\,\angle 3\)

which in fact clearly add to \(180^o\)

Answer:

ABM is 60; DBC is 60; CBM is 120; HGF is 120; EFM is 120

Step-by-step explanation:

Answer:

25 dfferent ways

Step-by-step explanation:

The answer is 25 different ways because since there are students and thy line up behind each other you  would do 5 times 5 which equals to 25.

The value of covariance cov(y1, y2) is -0.222

                      y1      

y2         0         1         2          Total

0          1/9      2/9     1/9          4/9

1          2/9      2/9      0            4/9

2          1/9        0       0            1/9

Total   4/9       4/9     1/9          1      

  marginal distribution of y2:

y2      P(y2)      y2P(y2)      y2^2P(y2)

0         4/9        0.0000        0.0000

1          4/9         0.4444        0.4444

2          1/9         0.2222        0.4444

total      1          0.66667       0.88889

E(y2) = 0.6667

E(y2^2) = 0.8889

Var(y2) = E(y2^2)-(E(y2))^2=0.4444

marginal distribution of y1  

y1       P(y1)       y1P(y1)      y1^2P(y1)

0         4/9       0.0000      0.0000

1          4/9        0.4444       0.4444

2          1/9         0.2222      0.4444

total  1.00          0.6667      0.8889

E(y1) = 0.6667

E(y1^2) = 0.8889

Var(y1)= σy = E(y1^2)-(E(y1))^2 = 0.4444

E(XY) =∑xyP(x,y)=0.2222

Cov(y1,y2) = -0.222

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Answer:

Step-by-step explanation:

No, this is not a random sample of the coins in the jar. A random sample is one where each coin in the jar has an equal chance of being selected. If Russell took 97 coins out of a jar without a specific method of selection, it is not considered a random sample.

Answer:

23

Step-by-step explanation:

We are given that

f(2)=13

\(f'(x)\geq 2\)

\(2\leq x\leq 7\)

We have to find the possible small value of f(7).

We know that

\(f'(x)=\frac{f(b)-f(a)}{b-a}\)

Using the formula

\(f'(x)=\frac{f(7)-f(2)}{7-2}\)

\(f'(x)=\frac{f(7)-13}{5}\)

We have

\(f'(x)\geq 2\)

\(\frac{f(7)-13}{5}\geq 2\)

\(f(7)-13\geq 2\times 5\)

\(f(7)-13\geq 10\)

\(f(7)\geq 10+13\)

\(f(7)\geq 23\)

The small value of f(7) can be 23.

Given a discount of 20% and a manufacturer's coupon of $200, the price after the discount and coupon, (C ∘ D)(x), is 0.8x - 200.

A discount is an amount that reduces the price of a retail item.

Discounts are offered as rates and the discounted price is computed by multiplying the discount factor and the price.

Discount rate on offer = 20%

Discounting factor = 80% or 0.8 (100 - 20%)

Manufacturer's coupon off the price = $200

Let the price of the bureau = x

The price after the discount (discounted price) is given by D(x)

D(x) = 0.8x

The price after the coupon = C(x) = x - 200

The price after applying the discount and the coupon, (C ∘ D)(x) = 0.8x - 200

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Wilson's Warehouse sells a certain brand's bureau. They are offering a 20% discount in addition to accepting a manufacturer's coupon for $200 off. Let the price of the bureau be x. If the price after the discount is given by D(x) and the price after the coupon is C(x), find (C ∘ D)(x).

Based on the above table , the fastest growing listed occupation for those without a college degree is Gaming and sports book writers and runners.

Therefore option A is correct.

The college degree is described as a qualification awarded to students after completing the requirements for a specific course of study of which the two most common types of degrees are the Bachelor of Arts and Bachelor of Science.

With reference to the table, the occupations that do not require a college degree are:

We were able to conclude that Based on the above table , the fastest growing listed occupation for those without a college degree is Gaming and sports book writers and runners with a rate of 24.6%.

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Answer:

846 because 1000-154 is 846 .

Answer:

D

Step-by-step explanation:

Please mark brainliest

Answer:

This is the event X1=H. There are 8 outcomes in this event. Let C be the event that the first flip and the third flip are both heads. So A and B would not be the answer so I am guessing it is D and if I am right pls mark me brainless

The x-axis is where the circle centre is located. Three units make up the circle's radius. This circle's radius coincides with the radius of the circle whose equation is x² + y² = 9.

The y coordinate of a circle's centre will be 0 if the circle's centre is on the x-axis. The circle's equation will therefore have the generic form x2 + y2 + 2gx + c = 0, where g and c are constants.

Circle's standard equation is written as:

x²+y²+2gx+2fy+C=0

Centre is (-g, -f)

radius = √g²+f²-C

Given a circle whose equation is : x²+y²-2x-8=0

Get the centre of the circle

2gx = -2x

2g = -2

g = -1

Similarly, 2fy = 0

f = 0

Centre = (-(-1), 0) = (1, 0)

This demonstrates circle's centre is on the x-axis.

r = radius = √g²+f²-C

radius = √1²+0²-(-8)

radius =√9 = 3 units

The circle has a radius of three units.

For the circle x²+y²=9, radius is expressed as:

r² = 9

r = 3 units

As a result, this circle's radius matches that of the circle whose equation is x² + y² = 9.

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Answer:

23552

Step-by-step explanation:

23, 92, 368...   is a geometric sequence.

first term = a = 23

common ratio = r = 2 term ÷ first term = 92 ÷ 23 = 4

nth term = \(ar^n^-^1\)

6th term = \(23*(4)^6^-^1\)

\(=23*4^5\)

\(=23*1024\)

\(=23552\)

Hope this helps :)

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