PLEASE HELP!!! WILL MARK BRAINILEST IF CORRECT

Answer:

D. 19.25^2

Step-by-step explanation:

A = 5.5

H = 3.5

A = 19.25^2

Using simple linear equations, we can calculate that Andy has 3 quarters.

A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) component are included. Sometimes, the aforementioned is referred to as a "linear equation of two variables," with y and x serving as the variables.

Let the number of quarters Andy has = x

number of dollars Andy has = 20 - x

value of quarter = 0.25x

value of dollars = 0.5(20 - x)

Total value = $9.25

⇒ 0.25x + 0.5(20 - x) = 9.25

⇒ 0.25x + 10 - 0.5x = 9.25

⇒ - 0.25x = 9.25 - 10

⇒ - 0.25x = - 0.75

⇒   x = 3

Andy has quarter = 3

He has dollars = 20 - 3 = 17

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Answer:

Dark blue all the way to the left

Step-by-step explanation:

Its Dark blue

Answer:

1st one ( the dark blue) on your left-hand side

Step-by-step explanation:

Because the b=2 which begins on the y axis and 1/2 is the slope which goes one up and right 2.

Answer:

3280

Step-by-step explanation:

52×63=3276

Round 3276 to 3280

Hope this helps! :)

Answer:

0.875

Step-by-step explanation:

7/8 in decimal form is 0.875.

The length of side x is approximately 24.87, rounded to the nearest hundredth.

how can we find side of the triangle?

To find the length of side x, we can use the sine function, which relates the opposite side to an angle to the hypotenuse:

sin(11°) = opposite side/hypotenuse

Rearranging this equation, we get:

opposite side = sin(11°) * hypotenuse

We know that the hypotenuse has a length of 130, so we can substitute that in:

opposite = sin(11°) * 130

Using a calculator, we can evaluate sin(11°) to be approximately 0.1919, so we can substitute that in as well:

opposite = 0.1919 * 130

Simplifying this expression, we get:

opposite ≈ 24.87

Therefore, the length of side x is approximately 24.87, rounded to the nearest hundredth.

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Answer:

7/12

Step-by-step explanation:

2 2/6 = 14/6 or 7/3

1 3/4 = 7/4

7/3 - 7/4 = 28/12 - 21/12 = 7/12

Answer:

25%

Step-by-step explanation:

10 is 25% of 40.

Answer:

17.5

Step-by-step explanation:

cout up to zero then to 7

Answer:

item 30.

d. 1 ½ as we can see the difference between the each x value is 2 and y value is more of 1 and 2.

items 31.

a. ⅖ as similar to upper question the difference between each x value is 2 and y value is 5 so ⅖

Answer:

12.5

Step-by-step explanation:

\(400km = 10hr \\ 500km = x \\ \\ 400kmx = 5000kmhr \\ x = 12.5hr\)

Answer: The answer is 12.5

Step-by-step explanation:

I did the math on my paper.

Answer:

The appropriate response is "(26.03, 33.97)".

Step-by-step explanation:

The given values are:

Average maternal age,

\(\bar{x} = 30\)

Standard deviation,

s = 6.2

Random sample,

n = 20

Now,

The degree of freedom will be:

⇒ \(df=n-1\)

        \(=20-1\)

        \(=19\)

"t" at confidence level 99%, will be:

⇒ \(\alpha=1-99 \ percent\)

       \(=1-0.99\)

       \(=0.01\)

⇒ \(\frac{\alpha}{2}=\frac{0.01}{2}\)

       \(=0.005\)

⇒ \(t\frac{\alpha}{2} \ df=t \ 0.005,19\)

By using the student table, we get

             \(=2.86 1\)

The margin of error will be:

⇒ \(E=\frac{t \alpha}{2,df\times (\frac{s}{\sqrt{n}})}\)

On substituting the estimated values, we get

⇒     \(=2.861\times (\frac{6.2}{\sqrt{20}})\)

⇒     \(=3.97\)

At 99%, the confidence level will be:

⇒ \(\bar{x}-E< \mu <\bar{x}+E\)

⇒ \(30-3.97< \mu < 30+3.97\)

⇒ \((26.03,33.97)\)

Thus the above is the correct approach.

Answer:-15

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

The equation has 2 terms in it which means 2 is the answer.

Answer:

  3.1 seconds

Step-by-step explanation:

The diver will hit the water when the height is zero.

  0 = -5t^2 +11t +13

Using the quadratic formula, we find the solutions to be ...

  t = (-11 ±√(11^2 -4(-5)(13)))/(2(-5)) = (-11 ±√381)/-10

The positive solution is

 t = 1.1 +√3.81 ≈ 3.1 . . . seconds

The diver will hit the water after 3.1 seconds.

Answer:

Yes

Step-by-step explanation:

Answer:

yes pls give brainliest

Step-by-step explanation:

answer is yes

Answer:

1) 56, 56, 56, -7

2) -1, -1, -1, -1

3) -7, 5, -35, -7

4) -4, -8, -4, -8

5) -21, -21, -21, -7

6) 10, -50, -5, -5

7) 48, 48, -4, 48

8) 6, -2, -2, -2

Step-by-step explanation:

Do I really have to explain? lol

Hope this helps.

\(\begin{array}{llll} f(x)~from\\\\ x_1 ~~ to ~~ x_2 \end{array}~\hfill slope = m \implies \cfrac{ \stackrel{rise}{f(x_2) - f(x_1)}}{ \underset{run}{x_2 - x_1}}\impliedby \begin{array}{llll} average~rate\\ of~change \end{array} \\\\[-0.35em] ~\dotfill\\\\ f(x)= 2x^2 + x -3 \qquad \begin{cases} x_1=0\\ x_2=2 \end{cases}\implies \cfrac{f(2)-f(0)}{2 - 0} \\\\\\ \cfrac{[2(2)^2 + (2) -3]~~ - ~~[2(0)^2 +(0) -3]}{2}\implies \cfrac{7-(-3)}{2}\implies \cfrac{7+3}{2}\implies \text{\LARGE 5}\)

The rate of change for the interval between 0 and 2 for the quadratic equation will be 5. Then the correct option is C.

It is the average amount by which the function varied per unit throughout that time period. It is calculated using the gradient of the line linking the interval's ends on the graph depicting the function.

Average rate = [f(x₂) - f(x₁)] / [x₂ - x₁]

The function is given below.

f(x) = 2x² + x - 3

The rate of change of the function for the interval between 0 to 2 is calculated as,

Average rate = [f(2) - f(0)] / [2 - 0]

Average rate = [(2(2)² + 2 - 3) - (2(0)² + 0 - 3)] / 2

Average rate = 10 / 2

Average rate = 5

The rate of change for the interval between 0 and 2 for the quadratic equation will be 5. Then the correct option is C.

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Required equation of line in slope intercept form

y = 4x - 7

What is equation of line in slope intercept form?

The most general form of equation of line in slope intercept form is given by y = mx + c

Where m is the slope of the line and c is the y intercept of the line.

Slope of a line is the tangent of the angle that the line makes with the positive direction of x axis.

If \(\theta\)  is the angle that the line makes with the positive direction of x axis, then slope (m) is given by

m = \(tan \theta\)

The distance from the origin to the point where the line cuts the x axis is the x intercept of the line.

The distance from the origin to the point where the line cuts the y axis is the y intercept of the line.

Slope of the line = 4

y - intercept of the line = -7

The line passes through (0. -7)

Equation of the required line

y - (-7) = 4(x - 0)

y + 7 = 4x

y = 4x - 7

Option D is correct

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Answer:

209,590 (approx.)

Step-by-step explanation:

A = Pe^rt

Solving

The X-Cordinate is 4

Answer:

umm

Step-by-step explanation:

Answer:

The first box : -4  the second one : 6

Step-by-step explanation:

subtract 7 from 3 for the first box, then add 10 to -4 for the second one.

Answer:

The  95% confidence interval is  \(244.26 < \mu < 246.95\)  

The pivot function used is  

           \(t = \frac{\=x - \mu}{ \frac{\sigma}{\sqrt{n} } }\)

Step-by-step explanation:

From the question we are told that

  The  data given is 246 242 248 245 250 244 252 248 248 247 250 248 246 242 248 244 245 246 250 242

  The  sample  size is  \(n= 20\)

Given that the confidence level is 95% then the level of significance is

      \(\alpha = (100 - 95)\%\)

      \(\alpha = 0.05\)

The  degree of freedom is mathematically represented as

    \(df = 20 -1\)

    \(df = 19\)

From the student t-distribution table  the critical value of  \(\frac{\alpha }{2}\)  is  

          \(t_{\frac{\alpha }{2} , 19 } = 2.093\)

The mean is mathematically represented as

          \(\= x = \frac{\sum x_i}{ n}\)

         \(\= x = \frac{246+ 242 +248+245+ 250+ 244+252+ 248 +248 +247+ 250+ 248+ 246+ 242 +248 +244 +245 +246+ 250+ 242}{20}\)\(\= x = 246.6\)

The standard deviation is mathematically represented as

            \(\sigma = \sqrt{\frac{\sum (x_i - \= x )^2)}{n} }\)

           \(\sigma = \sqrt{\frac{(246- 246.6)^2 +(242- 246.6)^2 +(248- 246.6)^2 + (248- 245)^2+}{20} } \ ..\)

             \(\ ...\sqrt{\frac{(250-246.6 )^2+ (244- 246.6)^2+(252- 246.6)^2+ (248- 246.6)^2+ (248- 246.6)^2+}{20} } \ ...\)

              \(\ ..\sqrt{\frac{(247- 246.6)^2+ (250- 246.6)^2+ (248-246.6)^2+ (246-246.6)^2+ (242-246.6)^2+ (248-246.6)^2+ (244-246.6)^2+}{20} } \ ...\)       \(\sqrt{\frac{ (245-246.6)^2+ (246-246.6)^2+ ( 246-246.6)^2 + ( 250-246.6)^2+ ( 242-246.6)^2 +( 246-246.6)^2+ ( 242-246.6)^2 }{20} }\)\(\sigma = 2.87411\)

The margin of error is mathematically represented as

       \(E = t_{\frac{\alpha }{2} , 19} * \frac{\sigma }{\sqrt{n} }\)

      \(E = 2.093 * \frac{2.87411 }{\sqrt{20} }\)

      \(E = 1.345\)

The 95% confidence interval is mathematically represented as

       \(\= x - E < \mu < \= x + E\)

=>   \(245.6 - 1.345 < \mu <245.6 + 1.345\)

=>    \(244.26 < \mu < 246.95\)  

The pivot function used is  

           \(t = \frac{\=x - \mu}{ \frac{\sigma}{\sqrt{n} } }\)

The GCF (Greatest Common Factor) is the largest number that divides evenly into two or more numbers. In this case, we can find the GCF of 75 and 3 by listing their factors and finding the largest one they have in common. The factors of 75 are 1, 3, 5, 15, 25, and 75. The factors of 3 are 1 and 3. The largest factor they have in common is 3. Therefore, the GCF of 75 and 3 is 3.

We can use the GCF to factor the expression 75 - 3x by dividing each term by the GCF and writing the expression as a product. In this case, we can divide both terms by 3 to get 75/3 - (3x)/3, which simplifies to 25 - x. We can then write the original expression as a product by multiplying this simplified expression by the GCF: 3(25 - x).

Therefore, the factored form of 75 - 3x using the GCF is 3(25 - x).

Answer:

3(25-x)

Step-by-step explanation:

First we find the GCF of 75 and -3x, which is 3

3 is the highest number we can divide both 75 and -3

Hence, the answer is 3(25-x)

Answer:

Here's an interesting project idea for mathematics that can relate three different topics:

Topic 1: Fractals

Topic 2: Chaos Theory

Topic 3: Differential Equations

Research Question: Can fractals be used to model chaotic systems described by differential equations?

In this project, you can explore the concept of fractals and their applications in modeling complex systems. You can also delve into chaos theory and differential equations to understand how they are used to describe chaotic systems. By combining these three topics, you can investigate whether fractals can provide a better understanding of chaotic systems by modeling them more accurately.

Your research paper can cover the following areas:

Introduction: Provide an overview of fractals, chaos theory, and differential equations, and explain their relevance to the research question.

Fractals: Discuss the properties of fractals and how they can be used to model complex systems. Provide examples of fractals in nature and technology.

Chaos Theory: Explain the concept of chaos and how it is described by differential equations. Discuss the importance of chaos theory in understanding complex systems.

Differential Equations: Provide an overview of differential equations and their applications in physics, engineering, and other fields. Explain how differential equations are used to model chaotic systems.

Combining the three topics: Explain how fractals can be used to model chaotic systems described by differential equations. Provide examples of fractals used in modeling chaotic systems and compare the results to traditional methods.

Conclusion: Summarize the findings of your research and discuss the implications of using fractals to model chaotic systems.

Overall, this project can be a challenging and rewarding exploration of the interplay between three different mathematical topics.

Step-by-step explanation:

Answer:

C.

Step-by-step explanation:

The slope intercept form is:

y= mx +b

so you first want to start off by looking for the equation with y being the sum. In this case, there is only one, so you don't have to do anymore work.