(Solving a expression) Omg HELP my fricking fat 8th grade teacher is making me confused SOMEONE PLEASE HELPPPP!!!!!

Answer:

9.28

Step-by-step explanation:

hope this help!!!

Answer:

Step-by-step explanation:

Answer:

The value of r is 13/4.

Step-by-step explanation:

As per given question we have provided that :

Finding the value of r by substituting the values in the formula :

\(\begin{gathered} \qquad{\implies{\sf{U = \pi \Big[r + h\Big]}}}\\\\\qquad{\implies{\sf{16\frac{1}{2} = \dfrac{22}{7} \Big[r + 2\Big]}}}\\\\ \qquad{\implies{\sf{\frac{33}{2} = \dfrac{22}{7} \Big[r + 2\Big]}}}\\\\\qquad{\implies{\sf{\frac{33}{2} \times \dfrac{7}{22} = \Big[r + 2\Big]}}} \\\\\qquad{\implies{\sf{\frac{\cancel{33}}{2} \times \dfrac{7}{\cancel{22}} = \Big[r + 2\Big]}}}\\\\\qquad{\implies{\sf{\frac{3}{2} \times \dfrac{7}{2} = \Big[r + 2\Big]}}}\\\\\qquad{\implies{\sf{\frac{3 \times 7}{2 \times 2} = \Big[r + 2\Big]}}}\\\\\qquad{\implies{\sf{\frac{21}{4} = \Big[r + 2\Big]}}}\\\\\qquad{\implies{\sf{r = \dfrac{21}{4} - 2}}}\\\\\qquad{\implies{\sf{r = \dfrac{21 - 8}{4}}}}\\\\\qquad{\implies{\sf{r = \dfrac{13}{4}}}}\\\\ \qquad{\star{\underline{\boxed{\sf{r = \dfrac{13}{4}}}}}}\end{gathered}\)

Hence, the value of r is 13/4.

\(\rule{300}{2.5}\)

a) The solution for b in the equation 2b × 3 = 6 is b = 1.

b) The solution for b in the equation 32 - 3b = 2 is b = 10.

c) The solution for b in the equation 6 + 7b = 41 is b = 5.

d) The solution for b in the equation 100/5b = 2 is b = 10.

a) To solve for b in the equation 2b × 3 = 6, we can start by dividing both sides of the equation by 2 to isolate b.

2b × 3 = 6

(2b × 3) / 2 = 6 / 2

3b = 3

b = 3/3

b = 1

Therefore, the solution for b in the equation 2b × 3 = 6 is b = 1.

c) To solve for b in the equation 6 + 7b = 41, we can start by subtracting 6 from both sides of the equation to isolate the term with b.

6 + 7b - 6 = 41 - 6

7b = 35

b = 35/7

b = 5

Therefore, the solution for b in the equation 6 + 7b = 41 is b = 5.

b) To solve for b in the equation 32 - 3b = 2, we can start by subtracting 32 from both sides of the equation to isolate the term with b.

32 - 3b - 32 = 2 - 32

-3b = -30

b = (-30)/(-3)

b = 10

Therefore, the solution for b in the equation 32 - 3b = 2 is b = 10.

d) To solve for b in the equation 100/5b = 2, we can start by multiplying both sides of the equation by 5b to isolate the variable.

(100/5b) × 5b = 2 × 5b

100 = 10b

b = 100/10

b = 10.

Therefore, the solution for b in the equation 100/5b = 2 is b = 10.

In summary, the solutions for b in the given equations are:

a) b = 1

c) b = 5

b) b = 10

d) b = 10

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Answer:

2/3 kilometers

Step-by-step explanation:

Add the two distances together

4/9 + 2/9 = 6/9

Simplify the fraction by dividing the top and bottom by 3

2/3

Answer:

Step-by-step explanation:

(4/9) + (2/9) = 6/9 = 2/3

Answer:

Step-by-step explanation:

The root which is 2 is the fractional portion of your exponent

\(\sqrt{x^{7} y^{12} }\)

=\((x^{7} y^{12} )^{\frac{1}{2} }\)              >You can distribute 1/2 to each term by multiplying

\(=x^{\frac{7}{2} } y^{6\)

Yes, it is possible to have negative probabilities in some cases.

It is possible to have a negative probability?

First, for classical experiments, the probability for a given outcome on an experiment is always a number between 0 and 1, so it is defined as positive.

In some cases, we can have probability distributions with negative values, which are associated to unobservable events.

For example, negative probabilities are used in mathematical finance, where instead of probability they use "pseudo probability" or "risk-neutral probability"

Concluding, yes, is possible to have a negative probability.

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Answer:

2x+3x+x-30=180(sum of interior angle of triangle)

6x=180+30

x=210/6=35

Answer:

2x+3x+x-30=180

6x=180+30

x=210/6=35

Step-by-step explanation:

The first figure has a 629.86 square metre area.

The sum of a rectangle's length and breadth gives the area of the rectangle.

Length times width equals the rectangle's area.

To determine the area of the first figure, we must first calculate the combined areas of the rectangle and the semicircles.

This gives us the figure's overall area.

The rectangle measures 28 metres in length. We can observe that the rectangle's length is divided in half by the semicircle's diameter.

Thus, D = 14 m and radius = 7 m.

Area of the 2 semicircles is equal to

 = 7x7x7 = 49 square metres

The rectangle's width is equal to 24 minus r.

= 24 - 7 = 17m

Length times width equals the rectangle's area.

28 times 17 is 476 square metres.

The total size is 629.86 square metres.

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The seller purchased the product at a cost of 7500 and sold it for 7950, which resulted in a gain of 6%. So, the cost price is 7500.

In business, it is essential to keep track of cost prices and profit margins to ensure profitability. If the selling price is 7950 and the gain is 6%, we can use the following formula to calculate the cost price:

Cost price = Selling price / (1 + Gain%)

Substituting the given values, we get:

Cost price = 7950 / (1 + 0.06)

Cost price = 7500

Therefore, the cost price of the product is 7500, the gain percentage is calculated based on the cost price and not the selling price.

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Answer:

1. 13x - 14

2. 21 - 6x

3. 20x - 18

4. 15 + 5x

5. 14n + 36

6.  9 - 12n

7. 8n + 32

8. k - 11

9. -7k +37

10. 36 - 13k

11. 2k + 7

12. 52 + x

13. -2x -21

14. 21 + 3x

15. 12v - 2

Step-by-step explanation:

Answer:

Below ↓

Step-by-step explanation:

\(1)\:\sf 3x + 2(5x - 7)\)

\(\sf 3x+10x-14\)

\(\sf 13x-14\)

____________

\(\sf 2)\: 9 - 3(2x - 4)\)

\(\sf 9-6x+12\)

\(\sf -6x+21\)

____________

\(\sf 3)\: 8x - 6(3 - 2x)\)

\(\sf 8x-18+12x\)

\(\sf 20x-18\)

____________

\(\sf 4)\: -5 + 5(x + 4)\)

\(\sf -5+5x+20\)

\(\sf 5x+15\)

____________

\(\sf 5) \:4 (6n + 9) - 10n\)

\(\sf 24n+36-10n\)

\(\sf 14n+36\)

____________

\(\sf 6)\:14 - 3(4n - 1)\)

\(\sf 14-12n+3\)

\(\sf -12n+17\)

______________

\(\sf 7) \: -8n + 8(4 + 2n)\)

\(\sf -8n+32+16n\)

\(\sf 8n+32\)

______________

\(\sf 8)\:7k - 2(3k + 1) - 9\)

\(\sf 7k-6k-2-9\)

\(\sf k-11\)

______________

\(\sf 9)\: k + 1 - 4(2k - 9)\)

\(\sf k+1-8k+36\)

\(\sf -7k+37\)

_______________

\(\sf 10)\:-6 + 5(8 - k) - 8k\)

\(\sf -6+40-5k-8k\)

\(\sf 34-13k\)

__________________

\(\sf 11)\: -10k - 3 + 2(5 + 6k)\)

\(\sf -10k-3+10+12k\)

\(\sf 2k+7\)

__________________

\(\sf 12)\: 8 + 9x + 4(11 - 2x)\)

\(\sf 8+9x+44-8x\)

\(\sf x+52\)

_________________

\(\sf 13)\: -4(2x - 7) + 6x - 7\)

\(\sf -8x+28+6x-7\)

\(\sf -2x+21\)

_________________

\(\sf 14)\: 9 + 3(4 - 3x) + 12x\)

\(\sf 9+12-9x+12x\)

\(\sf 3x+21\)

_________________

\(\sf 15)\: 5(2y - 4) + 2(y + 9)\)

\(\sf 10y-20+2\left(y+9\right)\)

\(\sf 10y-20+2y+18\)

\(\sf 12y-2\)

____________________

\(\sf 16)\: -4(3u - 1) +7(3 - 2u)\)

\(\sf -12u+4+7\left(3-2u\right)\)

\(\sf -12u+4+21-14u\)

\(\sf -26u+25\)

___________________

\(\sf 17)\: 6(-5u + 1) - 3(4u - 12)\)

\(\sf -30u+6-3\left(4u-12\right)\)

\(\sf -30u+6-12u+36\)

\(\sf -42u+42\)

___________________

\(\sf 18)\: -3(u + 5) + 8(2u + 1)\)

\(\sf -3u-15+8\left(2u+1\right)\)

\(\sf -3u-15+16u+8\)

\(\sf 13u-7\)

______________________________________________

Answer:

80.78°

Step-by-step explanation:

When the 30 cm long string will be bent in the form of a sector it's two sides will be radii of the sector and lower part be the arc. Length of the arc can be found as given below.

Length of the string = 30 cm

radius of sector (r)= 8.8 cm

Length of the arc (l) = 30 - 2*8.8 = 30 - 17.6 = 12.4 cm

Let the sector makes \(\theta\) angle at the centre of the circle.

Formula for length of arc of a sector is given as:

\(\huge \red{l=\frac{\theta}{360\degree}\times 2\pi r}\)

Plugging the values of l and r in the above formula, we find:

\(12.4 = \frac{ \theta}{360 \degree} \times 2(3.14)(8.8) \\ \\\implies12.4 = \frac{ \theta}{360 \degree} \times 55.264 \\ \\ \implies \: \theta = \frac{12.4 \times 360 \degree}{55.264} \\ \\ \implies \: \theta =80.775 \degree \\ \\ \implies \: \theta \approx \: 80.78 \degree\)

The difference between linear and non linear functions are

The degree of linear function is always 1.

Degree of non linear functions are greater than 1

Difference in y is a constant in linear function

For non linear function table , difference in y is not a constant .

The graph of linear function is a line .

The graph of non linear function is a curved shape.

Given :

Linear and non linear functions

Linear function of the form y=mx+b

for example we take linear function f(x)=2x+3

The degree of linear function is always 1.

Degree of non linear functions are greater than 1

When we represents a linear function in a table then there will common difference in y values . Difference in y is a constant.

For non linear function table , difference in y is not a constant .

The graph of linear function is a line .

The graph of non linear function is a curved shape.

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Answer:

Sample Answer: A linear function has a constant additive rate of change, while a nonlinear function does not. For a table of values to be linear, the dependent variable must have a constant rate of change as the independent variable increases by 1. On a graph, the function must be a straight line to be linear.

If it rains, Jack will not attend the baseball game.

P: It is raining.

Q: Jack will not be attending the baseball game.

P is the antecedent, and Q is the consequent.

(If P is true, then Q is true.)

If it rains, Jack will not be able to attend the baseball game.

Symbolic expression (plural figurative expressions) (computing) A method of representing semi-structured data in human-readable text form that is mostly made up of symbols and lists and is widely used in the Lisp programming language.

Symbolic speech consists of nonverbal, nonwritten forms of communication such as flag burning, arm band wearing, and draught card burning.

A literary symbol is an object, a person, a situation, or an action in a story that has a literal meaning but implies or represents other meanings.

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Answer:

x=3

Step-by-step explanation:

Answer:

x = 3

Step-by-step explanation:

3 * 3 * 3 = 27

Hope this helps and pls do mark me brainliest if you can:)

Answer: 6 seconds

Step-by-step explanation:

Time            Jabal (2.5mps)            Michael (5mps)

Start              15                                   0

1 sec              17.50                              5

2                    20                                  10

3                    22.5                               15

4                    25                                  20

5                    27.5                               25

6                    30                                  30

7

8

9

10

Answer:

6 sec

Step-by-step explanation:

Let d = distance for Jabal

d + 15 = distance for Michael

t = d/r

d/2.5 = time for Jabal

(d + 15)/5 = time for Michael

The times are equal since they both started walking at the same time.

(d + 15/5 = d/2.5

2.5(d + 15) = 5d

2.5d + 37.5 = 5d

37.5 = 2.5d

d = 15 m. = Jabal's distance

15/2.5 = 6 sec.

Step-by-step explanation:

1d

2b

3c

4a

those are the answers

Answer:

a-2;4

b-2;4

c-1

d-3

Step-by-step explanation:

-4/5=-20/25=-8/10

1/2=2/4

1/3=3/9

Answer:

 10

Step-by-step explanation:

\(\mathrm{Apply\:rule}:\quad \:a-\left(-b\right)=a+b\)

\(-6-\left(-16\right)=-6+16\)

\(=-6+16\)

\(\mathrm{Add\:the\:numbers:}\:-6+16=10\)

Hence, Answer = 10

~Lenvy

The value of x in the right angled triangle is 12.99 in( nearest hundredth)

Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle.

The longest side is the hypotenuse and its always opposite to the right angle. The other two sides are the opposite and adjascent.

sin(tetha) = opp/hyp

cos(tetha) = adj/hyp

tan(tetha) = opp/adj

In this case, the hypotenuse = 15

opposite = x

sin 60 = x/15

x = sin60 × 15

x = 12.99 in( nearest hundredth)

therefore the value of x is 12.99 in

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The uppercase letter H has reflectional symmetry and does not have rotational symmetry or point symmetry.

The uppercase letter H has reflectional symmetry. Reflectional symmetry, also known as mirror symmetry, means that there is a line (axis) along which the shape can be divided into two equal halves that are mirror images of each other. In the case of the letter H, a vertical line passing through the center of the letter can be drawn as the axis of symmetry. When the letter H is folded along this line, the two halves perfectly match.

The letter H does not have rotational symmetry. Rotational symmetry refers to the property of a shape that remains unchanged when rotated by a certain angle around a central point. The letter H cannot be rotated by any angle and still retain its original form.

The letter H also does not have point symmetry, which is also known as radial symmetry or rotational-reflectional symmetry. Point symmetry occurs when a shape can be rotated by 180 degrees around a central point and still appear the same. The letter H does not exhibit this property as it does not have a central point around which it can be rotated and remain unchanged.

In summary, the uppercase letter H exhibits reflectional symmetry but does not possess rotational symmetry or point symmetry.

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Answer:

\(2.28*10^7\)

Step-by-step explanation:

\((2.4*10^3)(9.5*10^3)=(2.4*9.5)(10^3*10^3)=22.8*10^6=2.28*10^7\)

Answer:

228,000

Step-by-step explanation:

(2.4x10^3) x (9.5x10^3)

(2.4x100) x (9.5x100)

240x950

228,000

I’m almost positive the answer would be All real numbers

Answer:

B

Step-by-step explanation:

First calculate the slope. \(\frac{y2-y1}{x2-x1}\). In this case, the slope is \(\frac{4}{5}\).

If you look at all of the answer choices, they are in slope - intercept form. This makes it easier! All you have to do is find an equation with the slope 4/5 that uses the point (4,1) or (9,5).

The standard slope intercept form for a point (a,b) is

y-b = m(x-a).

Remember that two negatives equal a positive.

Substitute in the slope for m and (4,1) or (9,5) for the point (a,b).

The side length x of the right angle triangle is 25 units.

A right triangle is a triangle that has one of its angles as 90 degrees. The sum of angles in a triangle is 180 degrees.

The sides of a right triangle can be found using Pythagoras's theorem. Let's use Pythagoras's theorem to find the side x.

Hence,

c² = a² + b²

where

Therefore,

a = 24 units

b = 7 units

Hence,

24² + 7² = x²

576 + 49 = x²

625 = x²

square root both sides of the equation

x = √625

x = 25 units

Therefore,

x = 25 units

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Answer:

18

Step-by-step explanation:

4.5 liters / .25 liters/pcup = 18 pcups

Answer:\(\frac{8!}{2!*2!*2!}\) = 5040.

Step-by-step explanation:

Since CALCULUS has 8 letters with 2 indistinguishable C's,

2 indisnguishable L's and 2 indistinguishable U's, the answer is

\(\frac{8!}{2!*2!*2!}\) = 5040.

An airship propelled by some mechanical device travels five miles in ten minutes in the direction of the wind, but requires one hour to go back again to the starting point against the same wind. How long would it have taken to go the whole ten miles in a calm day without any wind? Hint: You don't have to use equations to solve this problem.

we have that

5 miles -------> 10 minutes (direction of the wind)

5 miles ------> 1 hour (against the same wind)

therefore

10 miles ------> ? (without any wind)

so

Let

x -----> speed of the wind

y -----> speed of the airship

direction of the wind

speed=d/t ------> 5/10=0.5 miles per min

against the same wind

speed=5/60=1/12 miles per min

so

x+y=0.5 ------> x=0.5-y -----> equation 1

y-x=1/12 -----> equation 2

solve the system

substitute equation 1 in equation 2

y-(0.5-y)=1/12

2y=(1/12)+1/2

2y=7/12

y=7/24=0.2917 miles per min

Find the value of x

x=(1/2)-7/24

x=5/24=0.2083 miles per min

therefore

10 miles without any wind

speed=d/t ------> t=d/speed

t=10/(7/24)

The confidence interval in both cases has been constructed as:

a) (26.02, 29.98)

b) (120.17, 127.83)

The formula to calculate the confidence interval is:

CI = xˉ ± z(σ/√n)

where:

xˉ is sample mean

σ is standard deviation

n is sample size

z is z-score at confidence level

a) xˉ = 28

σ = 4

n = 11

90 percentage confidence.

z at 90% CL = 1.645

Thus:

CI = 28 ± 1.645(4/√11)

CI = 28 ± 1.98

CI = (26.02, 29.98)

b) xˉ = 124

σ = 8

n = 29

90 percentage confidence.

z at 99% CL = 2.576

Thus:

CI = 124 ± 2.576(8/√29)

CI = 124 ± 3.83

CI = (120.17, 127.83)

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