PLESSSE HELP ME WITH THIS QUESTION TY

If Kira is a lovable dog who is full of energy. Her owner thought it would be fun to train her by throwing a frisbee for her to catch. The number of  seconds  it will take for the frisbee to hit the ground is: 6.2 seconds.

Given:

0.145t² + 0.019t + 5.5 = 0

Using almighty formula or quadratic formula

t=-b±√b²-4ac/2a

Where:

b²=19²

a=145

c=5500

Let plug in the formula

t=-19±√19²- 4(-145) (5500)/2(-145)

t=-19±√361+(3,190,000)/-290

t=-19±√3,190,361/-290

t=-19±1,786.158/-290

Hence,

-19-1,786.158/-290; -19+1,786.158/-290

t=6.2; 6.09

Therefore If Kira is a lovable dog who is full of energy. Her owner thought it would be fun to train her by throwing a frisbee for her to catch. The number of  seconds  it will take for the frisbee to hit the ground is: 6.2 seconds.

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Answer:

1) greater than

2) less than

3) greater than

4)less than

5) greater than

6) greater than

Step-by-step explanation:

Answer:The value of the interval is said to be increasing for every x < y where f (x) ≤ f (y) for a real-valued function f (x). If the value of the interval is f (x) ≥ f (y) for every x < y, then the interval is said to be decreasing.

Step-by-step explanation:

We have the inequality:

Now, in order to solve, we will do as follows:

n will take all the values from -9 to 7, any number smaller than -9 will make it false and any number greater than 7 will make it false.

Now, in order to graph the solution, we will have:

The coordinates of the point on the unit circle corresponding to a central angle of 21 degrees are (0.93, 0.36), which is answer choice c.

The point on the unit circle corresponding to a central angle of 21 degrees can be found using the trigonometric functions sine and cosine.

In this case, the x-coordinate is equal to the cosine of the angle and the y-coordinate is equal to the sine of the angle.

Converting degrees to radians, we have:

x = cos(21) = 0.93

y = sin(21) = 0.36

A unit circle in mathematics is a circle with a radius of one, or one unit. The unit circle is frequently the circle with radius 1 that is located at the origin (0, 0) in the Cartesian coordinate system on the Euclidean plane, notably in trigonometry.

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Answer:

This is about your opinion, not mine, but here's my opinion.

Don't copy and paste because anything can be found with good filters.

Essentially, just paraphrase or something.

Step-by-step explanation:

I prefer standard notation when calculating with small digits under 6 zeros because it is more visually simpler to view. When a number is involved with more digits, I prefer scientific notation because it is unlikely that I will lose track of how many digits there are.

Answer:

2xa(5x^2 + 3a).

Step-by-step explanation:

We are factorising:-

Divide the left side by 2xa and place the result in the parentheses:

10x^3a+6xa^2 = 2xa(5x^2 + 3a )

Answer:

2xa(5x² +3a-1)

Step-by-step explanation:

10x³a+ 6xa²-2xa=2xa-2xa

10x³a+ 6xa²-2xa=0

Factor 10x³a+ 6xa²-2xa:

2ax(5x² + 3a -1)

If researchers measure every member of a population, they have conducted a census. Correct option is C.

A census is a method of data collection that involves measuring or collecting information on every member of a population of interest.

Conducting a census can provide highly accurate and representative data for the entire population, as it eliminates the potential for sampling error or bias. This means that a census can greatly increase the external validity of a study, as the findings can be generalized to the entire population.

However, conducting a census can be time-consuming, resource-intensive, and impractical for certain populations or research questions. In some cases, a sample may be more feasible or appropriate for achieving the research objectives.

Therefore, while conducting a census can provide a high level of internal validity and eliminate potential sampling bias, it is not always the most practical or feasible method of data collection, and researchers must carefully consider the trade-offs between census and sampling methods depending on the specific research question and population of interest.

Therefore, correct option is C.

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Answer:

all you gotta is multiply length times width times height to find the area  my guy. its a good strategy my 6th math teacher taught me.  

Step-by-step explanation:

lmk if this helped. make sure to rate.

Answer:

nswer:

all you gotta is multiply length times width times height to find the area  my guy. its a good strategy my 6th math teacher taught me.  

Step-by-step explanation:

lmk if this helped. make sure to rate.

Step-by-step explanation:

Answer:

80% of 10 is 8 lol

Step-by-step explanation:

lol this was easy

Answer:

Solution

−12+

I know it LOL

Answer:

The price elasticity of demand, when using the midpoint​ formula, would be B.1.29.

How to find the price elasticity of demand ?

Price elasticity of demand = ((Q2 - Q1) / ((Q2 + Q1) / 2)) / ((P2 - P1) / ((P2 + P1) / 2))

where:

Q1 = initial quantity demanded = 20 units

Q2 = final quantity demanded = 15 units

P1 = initial price = $8

P2 = final price = $10

Substituting the values:

Price elasticity of demand = ((15 - 20) / ((15 + 20) / 2)) / (($10 - $8) / (($10 + $8) / 2))

= (-5 / 17.5) / (2 / 9)

= (-0.2857) / (0.2222)

= -1.2857

= 1. 29

The homogeneous solution is y_h = e^(-t/2)(A cos((√3/2)t) + B sin((√3/2)t)), where A and B are constants.

To determine the general solution of the given differential equations, let's solve each equation separately:

The differential equation is "-y + y = 2e + 3".

We can rewrite this equation as follows:

y' - y = 2e + 3.

This is a first-order linear homogeneous differential equation. The integrating factor is given by e^(∫-1 dx) = e^(-x) = 1/e^x.

Multiplying both sides of the equation by the integrating factor, we have:

1/e^x * y' - 1/e^x * y = 2e/e^x + 3/e^x.

The left-hand side can be simplified using the product rule:

(d/dx)(1/e^x * y) = 2e/e^x + 3/e^x.

Integrating both sides with respect to x, we get:

1/e^x * y = -2e/e^x - 3e/e^x + C,

where C is the constant of integration.

Multiplying both sides by e^x, we obtain:

y = -2e - 3e + Ce^x.

Therefore, the general solution is y = Ce^x - 5e.

The differential equation is "y - y = 3t + cos(t)".

This is a first-order linear non-homogeneous differential equation.

The homogeneous solution is y_h = Ae^t, where A is the constant of integration.

To find a particular solution, we can use the method of undetermined coefficients. Since the right-hand side contains both a linear term (3t) and a trigonometric term (cos(t)), we assume a particular solution of the form y_p = Bt + C cos(t) + D sin(t).

Substituting this particular solution into the differential equation, we get:

(Bt + C cos(t) + D sin(t)) - (Bt + C cos(t) + D sin(t)) = 3t + cos(t).

The terms with t and the cosine and sine functions should match on both sides of the equation. Equating the coefficients, we have:

B - B = 3, C - C = 1, D - D = 0.

From these equations, we find B = 3, C = 1, and D can be any constant.

Therefore, the particular solution is y_p = 3t + cos(t) + D sin(t), where D is a constant.

The general solution is the sum of the homogeneous and particular solutions:

y = y_h + y_p = Ae^t + 3t + cos(t) + D sin(t).

The differential equation is "+ y" + y + y = e + 4t".

This is a second-order linear non-homogeneous differential equation.

The homogeneous solution is found by assuming y_h = e^rt, where r is a constant.

Substituting this into the differential equation, we get the characteristic equation:

r^2 + r + 1 = 0.

Solving this quadratic equation, we find the roots r = (-1 ± √3i)/2.

Therefore, the homogeneous solution is y_h = e^(-t/2)(A cos((√3/2)t) + B sin((√3/2)t)), where A and B are constants.

To find a particular solution, we can again use the method of undetermined coefficients. Since the right-hand side contains both an exponential term (e^t) and a linear term (4t), we assume a particular solution of the form y_p = Ct + D e^t.

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7 gallons of 76% solution contain 0.76×(7 gal) = 5.32 gal of sugar

10 gal of c% solution (c for concentration) contain c/100×(10 gal) = c/10 gal of sugar

(for example, if you have 10 gal of 50% solution, then it contains 50/10 = 5 gal of sugar)

Mixing the two gives a new solution with a total volume of 17 gal. If its concentration ends up at 64%, then it must contain 0.64×(17 gal) = 10.88 gal of sugar. This means

(sugar in 76% solution) + (sugar in c% solution) = 10.88 gal

5.32 gal + c/10 gal = 10.88 gal

c/10 gal = 5.56 gal

c = 50.56 ≈ 51

which makes the answer A.

Answer:

d. 56

Equation:

Let x = the percent of the 10 gallon sugar solution

10x + 76(7) = 64(10 + 7)

10x + 532 = 1088

10x = 1088 - 532

10x/10 = 556/10

x = 55.6

55.6 is closest to 56, therefore, the answer is 56%

Answers:

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

Further explanation:

x+y = 80 is the total equation (ie the head count equation) since we assume each animal has 1 head, and there are 80 heads total.

That equation can be solved to y = 80-x after subtracting x from both sides.

The legs equation is 2x+4y = 248 because...

We're told there are 248 legs overall, so that's how we ended up with 2x+4y = 248

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

Let's plug y = 80-x into the second equation and solve for x.

2x+4y = 248

2x+4( y ) = 248

2x+4( 80-x ) = 248

2x+320-4x = 248

-2x+320 = 248

-2x = 248-320

-2x = -72

x = -72/(-2)

x = 36

There are 36 ducks

Now use this x value to find y

y = 80-x

y = 80-36

y = 44

There are 44 cows.

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

Check:

36 ducks + 44 cows = 80 animals total

36*2 + 44*4 = 72 + 176 = 248 legs total

The answers are confirmed.

Answer:

1$

Step-by-step explanation:

Her total amount is 40$

She then buys the tires(tires = 21$) so she bought that subtract 21$ from 40$ 40$ - 21$=19$

She next wanted to buy a bell so she did the bell was 5$ so subtract 5$ from 19$ 19$-5$=14$ left

So remember she has 14$ left and she is buying a basket which is 13$ so her buying the basket is remaining her with 1$ because basket is 13$ and she has 14$ so what is 14$-13$ it is 1$  and there's your answer.

         1$

__________

Hope this helps have a awesome afternoon:)

The budgets of Hong Kong, the United States of America, and Korea differ in contents, formats, advantages, and disadvantages. While each budget has its strengths and weaknesses, they all aim to provide a clear and transparent financial plan for their respective countries.

A budget is a financial plan that estimates expected income and expenditure for a specific period. It may include income, expenses, debts, and savings. Budgets may vary from country to country and can be analyzed by comparing their contents, formats, advantages, and disadvantages. Here are the budgets of Hong Kong, the United States of America, and Korea:

United States Budget:

Korean Budget:

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Answer:

9 and 10

Step-by-step explanation:

x = 1st positive integer

x+1 = 2nd positive integer

(x+1) is the next positive integer after x (Ex. 3 aka 2+1 is next integer after 2).

Larger Integer: x+1  ==> being squared

Smaller Integer: x ==> being multipled by 9

9x + 19 = (x+1)^2  ==> the square of (x+1) is 19 more that 9 multiplied by x.

9x + 19 = (x+1)(x+1)  ==> simplify

9x + 19 = x(x+1) + 1(x+1)   ==> distribute (x+1) to x and 1.

9x + 19 = (x*x + 1*x) + (1*x + 1*1)  

9x + 19 = x^2 + x + x + 1  ==> simplify

9x + 19 = x^2 + 2x + 1

19 = x^2 - 7x + 1  ==> subtract 9x on both sides

Make one side of the equation equal to 0 so you can factor the equation:

0 = x^2 - 7x - 18  ==> subtract both sides by 19

0 = x^2 + 2x - 9x - 18  ==> 2x - 9x = -7x and 2 * (-9) = -18

0 = x*x + 2x - 9x - 18  

0 = x(x + 2) - 9(x + 2)  ==> factor

0 = (x - 9)(x + 2)

x - 9 = 0         x + 2 = 0

x = 9                     x = -2

Out of x = 9 and x = -2, only x = 9 is positive.

Hence, x = 9 and x+1=10.

Hence, the answers are 9 and 10.

The solutions to the equation are x = -1, x = -8, and x = 1/2.

The equation 4x³ + 32x² + 42x - 16 = 0 can be divided throuh by 2 as follows:

2x³ + 16x² + 21x - 8 = 0

We can test each of these possible roots by substituting them into the equation and seeing if we get 0. When we substitute -1, we get 0, so -1 is a root of the equation. We can then factor out (x + 1) from the equation to get:

(x + 1)(2x² + 15x - 8) = 0

We can then factor the quadratic 2x² + 15x - 8 by grouping to get:

(x + 8)(2x - 1) = 0

This gives us two more roots, x = -8 and x = 1/2.

Therefore, the solutions to the equation are x = -1, x = -8, and x = 1/2.

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Perceived lack of anonymity is the source of bias that is most relevant to the given situation.

The data collected in the study, which is Mood on a Happy/OK/Sad scale, is qualitative or categorical data.

This describes an observational study.

What is Statistics?

Statistics is a field of study that deals with the collection, analysis, interpretation, presentation, and organization of data. It involves the use of mathematical and statistical methods to extract meaningful insights from data and to draw conclusions or make decisions based on the findings.

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Answer:

\(\sqrt{399}\) or 19.97 but if you round to nearest tenth it is 20

Step-by-step explanation:

using the Pythagorean theorem of \(a^{2} +b^{2} =c^{2}\)

substitute the values of 1 for a, leave b since we do not know it, and 20 for c.

So we have

\(1^{2}+b^{2}=20^{2}\\1+b^{2}=400\\\)

Solve for b,

\(b^{2}=399\\b=\sqrt{399}\)

Answer:

20

Step-by-step explanation:

a^2+b^2=c^2

1^2+b^2=20^2

1+b^2=400

-1 -1

b^2=399

then take the square root of both and get 19.97498436

and after that, u round to the nearest 10th and get 20

hope this helps

Answer:

I have no clue.

Step-by-step explanation:

Answer:

What is a appropriately

What is a Procedure

What is a Enthusiasm

What is a Conflict

What is a Technique

What is a Obtain

What is a conflict management

Answer:

13

Step-by-step explanation:

you use the system of equations...

:)

Answer:

36

Step-by-step explanation:

Every next term is added by a multiple of 3

6 + 3 = 9

9 + ( 3 × 2 ) = 15

15 + ( 3 × 3 ) = 24

24 + ( 3 × 4 ) = 36

Answer:

36.

Step-by-step explanation:

The differenes in the terms are 3, 6, 9  so the next difference is 12.

24 + 12 = 36.

Step-by-step explanation:

radius =x+2

diameter=4x

Diameter=2(radius)

4x=2(x+2)

4x=2x+4

4x-2x=4

2x=4

x=4/2

x=2

Subtitute x=2 in radius:

r=2+2=4

Area=πr²

Area=3.14×4²

Area=3.14×16

Area=50.24

Both the circles are identical so area is same.

Note:if you need to ask any question please let me know.

Answer:

10.8333..

Step-by-step explanation:

Multiply 6 by 10/ 60

Add 5 to answer/ 65

Divide answer by 6/ 65÷6

Use scientific calculator to convert to the decimal

10 5/6 as a decimal is 10.83.

A decimal is a non integer. It is separated by a point. An example of a decimal is 1.20.

In order to convert the mixed fraction to a decimal, first convert to an improper fraction: 10 5/6 = 65 / 6

The second step is to divide 65 by 6. Th result is 10.83

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Answer:

A) 63.576

Step-by-step explanation:

1/10 can also be 10/100 which is 10%

10% of 0.06 = 0.006

20=5x-13+6x

We move all terms to the left:

20-(5x-13+6x)=0

We add all the numbers together, and all the variables

-(11x-13)+20=0

We get rid of parentheses

-11x+13+20=0

We add all the numbers together, and all the variables

-11x+33=0

We move all terms containing x to the left, all other terms to the right

-11x=-33

x=-33/-11

x= 3

Answer:

3

Step-by-step explanation:

First, write the equation.

20=5x-13+6x  Combine like terms on the right side.

20=11x-13       Add 13 on both sides.

+13     +13

33=11x             Divide both sides by 11.

/11  /11

3=x

Hope this helps!! Have a wonderful day :3

Answer:

The height of the railway = 361 feet

Step-by-step explanation:

This question can be solved by applying the required trigonometric function. Let the height of the railway be represented by h.

Sin θ = \(\frac{opposite}{hypotenuse}\)

Sin 52 = \(\frac{h}{458}\)

h = Sin 52 x 458

  = 0.788 x 458

  = 360.904

h = 361

So that, the railway is 361 feet high.