lol please helppppppp

Answer:

Time, t = 2.44 seconds

Step-by-step explanation:

Logan is doing a handstand dive from a 12 meter platform. The equation that models the path of her dive is given by :

\(h=-4.9t^2+12t\)

It is required to find the time after which Logan will hit the ground. At this point, h = 0

\(-4.9t^2+12t=0\\\\t(-4.9t+12)=0\\\\t=\dfrac{12}{4.9}\\\\t=2.44\ s\)

So, after 2.44 seconds it will hit the water.

Answer:

3/4 in decimal form is 0.75.

Step-by-step explanation:

I hope this helps! :)

Answer:

0.75

Step-by-step explanation:

3/4 is expressed as 0.75 in the decimal form.

to make a fraction into a decimal you just divide the numerator by the

denominator.

and the numerator is the part of a fraction that is above the line

denominator is at the bottom

so 3 / 4 = 0.75

3/4 in decimal form is 0.75

Hope This Helped

Answer: The expression is not factorable with rational numbers.

Step-by-step explanation:

Answer:

0

Step-by-step explanation:

Answer:

34

Step-by-step explanation:

just divide the question substract 2

Answer:

The area of the space is( 0.1155 m^2)

(a) The appropriate null and alternative hypotheses for this scenario are:

Null Hypothesis (H₀): The true average compressive strength is equal to or less than 1300 KN/m².

Alternative Hypothesis (Hₐ): The true average compressive strength is greater than 1300 KN/m²

(b) The p-value for the test statistic X = 1340 is approximately 0.0193

Hypothesis testing is a statistical method used to make inferences or decisions about a population based on sample data.

To test these hypotheses, a sample of 12 specimens is taken, and the sample mean compressive strength (X) is calculated. The test statistic used in this case is the sample mean itself.

The p-value is then calculated to determine the probability of observing a sample mean as extreme as the observed value (1340) under the assumption that the null hypothesis is true.

(a) The appropriate null and alternative hypotheses for this scenario are:

Null Hypothesis (H₀): The true average compressive strength is equal to or less than 1300 KN/m².

Alternative Hypothesis (Hₐ): The true average compressive strength is greater than 1300 KN/m²

(b) To find the p-value for the given test statistic X = 1340, we need to calculate the probability of obtaining a sample mean as extreme as X, assuming the null hypothesis is true.

Since the sample size is 12 and the population standard deviation is known (σ = 67), use the normal distribution to approximate the sampling distribution of the sample mean.

The test statistic is X itself, and find the probability of obtaining a sample mean as extreme as 1340 or more, given that the null hypothesis is true.

Using the known population standard deviation, calculate the standard error of the sample mean (SE) as σ/sqrt(n), where σ = 67 and n = 12.

=> SE = 67/√(12) ≈ 19.334

To calculate the z-score, subtract the assumed population mean (1300) from the observed sample mean (1340) and divide it by the standard error:

z = (1340 - 1300) / 19.334 ≈ 2.069

Now, find the p-value associated with this z-score using a standard normal distribution table or calculator.

The p-value represents the probability of obtaining a z-score as extreme as 2.069 or more.

Consulting a standard normal distribution table or using a calculator,

Find that the area to the right of 2.069 is approximately 0.0193.

Therefore,

(a) The appropriate null and alternative hypotheses for this scenario are:

Null Hypothesis (H₀): The true average compressive strength is equal to or less than 1300 KN/m².

Alternative Hypothesis (Hₐ): The true average compressive strength is greater than 1300 KN/m²

(b) The p-value for the test statistic X = 1340 is approximately 0.0193.

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Answer:

m = 2/3

Step-by-step explanation:

4y = -6x + 72

y = -3/2x + 18

Negative reciprocal = 2/3

Answer:

14 students walk

Step-by-step explanation:

40 total

22 girls

18 boys - 7 boys who cycle = 11 boys - 6 who take the bus. That leaves 5 boys who walk.

9 girls walk

5 + 9 = 14 total.

Answer:

The game field is 350 40 percent for 250 is 100 and 250 plus 100 is 350.

Brainly or thank me (in addition if there is other answers)

Answer:

15: 1 3 5 15

20: 1 2 4 5 10 20

Step-by-step explanation:

This assumes you are only factoring the coefficients of the expression.  Using this assumption, we simply create a list of factors of the coefficients.

15 -> 1 * 15, 3 * 5 --> 1 3 5 15

20 -> 1 * 20, 2 * 10, 4 * 5 --> 1 2 4 5 10 20

If you don't assume factoring of just the coefficients, then 20x factors

20x:  1 2 4 5 10 20 x

Cheers.

Answer:

b

Step-by-step explanation:

Answer:

0.000714

Step-by-step explanation:

Move the decimal point 4 points to the left.

Answer:

Step-by-step explanation:

\(7.14*10^{-4} \\\frac{7.14}{10^{4} } \\\frac{7.14}{10000} \\\\0.000714\)

To multiply an octal number n directly in octal by 10s, you simply shift the number n s places to the left, adding s number of 0s to the right.

To divide an octal number directly in octal by 10s, you simply shift the number n s places to the right, removing s number of digits from the right.

You then calculate the quotient and remainder. For example, if n = (741)s, and s = 2, then:

(741)s / (10)s = (74)s with a remainder of 1.

To determine the binary form of the number n = 22019, you can convert each digit of the decimal number to binary and then combine the binary digits. Here's the conversion process:

22,019 / 2 = 11,009 with a remainder of 1

11,009 / 2 = 5,504 with a remainder of 1

5,504 / 2 = 2,752 with a remainder of 0

2,752 / 2 = 1,376 with a remainder of 0

1,376 / 2 = 688 with a remainder of 0

688 / 2 = 344 with a remainder of 0

344 / 2 = 172 with a remainder of 0

172 / 2 = 86 with a remainder of 0

86 / 2 = 43 with a remainder of 0

43 / 2 = 21 with a remainder of 1

21 / 2 = 10 with a remainder of 1

10 / 2 = 5 with a remainder of 0

5 / 2 = 2 with a remainder of 1

2 / 2 = 1 with a remainder of 0

1 / 2 = 0 with a remainder of 1

So the binary form of n = 22019 is 1010110011011. The number n has 13 binary digits.

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Answer:

uh, this is very confusing....is there anyway that you could word it differently?

Answer:

x = 12

Side length = \(2\sqrt{3}\) in

Step-by-step explanation:

Area of the given hexagon = 6 × (Area of the triangular section)

Area of the triangular section = \(\frac{1}{2}(\text{Base})(\text{Height})\)

                                                 = \(\frac{1}{2}(2)(\sqrt{3})^{\frac{x}{12}}(\sqrt{3})^{\frac{x}{6}}\)

                                                 = \((\sqrt{3})^{\frac{x}{12}}[(\sqrt{3})^2]^{\frac{x}{12}}\)

                                                 = \((\sqrt{3})^{\frac{x}{12}}(3)^{\frac{x}{12}}\)

                                                 = \((3\sqrt{3})^{\frac{x}{12}}\)

Now area of the given hexagon = \(6(3\sqrt{3})^{\frac{x}{12}}\)

Since, area of the hexagon is = \(18\sqrt{3}\) in²

\(6(3\sqrt{3})^{\frac{x}{12}}=18\sqrt{3}\)

\((3\sqrt{3})^{\frac{x}{12}}=(3\sqrt{3})^1\)

\(\frac{x}{12}=1\)

x = 12

Therefore, side length = \(2(\sqrt{3})^{\frac{x}{12}}\)

                                      = \((2\sqrt{3})^{\frac{12}{12}}\)

                                      = \(2\sqrt{3}\) in.

Answer:

Step-by-step explanation:

Angles x and z are supplementary, meaning that they add up to 180.  From the markings on the diagram, angle z and the angle measuring 20 are complementary, meaning they add up to 90. So the game plan is to find out the measure of angle z first, then use that to find the measure of angle x.

angle z = 90 - 20 so

angle z = 70 degrees. And

angle z + angle x = 180.  Subbing in our value for z:

70 + angle x = 180 and

angle x = 180 - 70 so

angle x = 110 degrees

Step-by-step explanation:

3x^2-2x+1

3(2)^2-2(2)+1

3(4)-4+1

12-4+1

8+1=9 Answer

Step-by-step explanation:

3(2)^2 - 2x + 1

=3x4 - 2x + 1

=12 - 2x + 1

= 13 - 2x

Answer: 13 - 2x

To see the points of draw an inverse graph.

Now, According to the question:

Inverse Relation of a Graph

If a relation is given as a graph, then its inverse is obtained by reflecting it along the line y = x. This is because the inverse of a relation is nothing but the interchanged ordered pairs of the given relation. To graph the inverse of a relation that is given by a graph,

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Answer:

ddddd

Step-by-step explanation:

We have to make that mixed number into proper number by changing into decimal number

Mixed Number:

A mixed number is nothing but the combination of a whole number and a proper fraction

If we have given any side measurement into a mixed number say \(1\frac{1}{2}\) unit then we have to change this \(\frac{1}{2}\) into decimal value and the total unit value will be 1.5 unit

Now we can put into the formula

area = length x width

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Answer:

x = 83 degree

Step-by-step explanation:

x + 43 = 126 (sum of two interior opposite angle is equal to the exterior angle formed)

x = 126 - 43

x = 83 degree

Answer:

83 degrees

Step-by-step explanation:

To find this you first find the angle opposite to 126. To do this you subtract 126 from 180 as 180 degrees is a straight line, and we are looking for that missing angle.

This equals 54 degrees.

Now, 54 + 43 equals 97.

Because all interior angles of a triangle always equal 180, you can find that last angle by subtracting 97 from 180. This leaves you with 83 degrees.

Answer:

Down in the explanation

Step-by-step explanation:

So.. my guess is the cost of the laminate flooring per square foot is D. The cost of the entire room could be A. The area of the kitchen could B, and the labor fee could be C. I'm sorry if I get this wrong, I tried my best.

9. Yes, since \(8+12>16\), meaning the side lengths satisfy the triangle inequality.

10. No, since \(5+7<20\), meaning the side lengths do not satisfy the triangle inequality.

The expected value for a student to spend on lunch each day from the survey of 50 students is $5.18.

The expected value for a student to spend on lunch each day is derived from the survey of 50 students. This value is calculated by taking the total number of dollars spent by all of the surveyed students and dividing it by the total number of students surveyed. In this particular survey, the total number of dollars spent was $247, and the total number of students surveyed was 50. Dividing $247 by 50 gives us a value of $4.94. This value is then rounded up to the nearest cent to give us the expected value of $5.18. This expected value is the average amount of money that a student can expect to spend on lunch each day from the survey. It is important to note that this value is an estimate, as individual student spending habits may vary greatly.

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Answer:

The answer is the 2nd one.

Answer:

0

Step-by-step explanation:

Piecewise functions are like recycling bins. They give you a piece of information for whatever value you may encounter on your graph. So, all you need to do is sort out the value they give you into the correct "bin," so to speak.

The first equation they give you is for any value less than zero. So, anything from -0.9999999 (you get the idea) onwards will use the equation on the right. So, if you have a value less than zero, then you will plug the x-value into the equation (-x - 2). Therefore, let's say your value was f(-1). You'd do: (-(-1) - 2). The negative cancel on your -1 and you're left with 1. Then, 1 - 2 = -1. So, in this example, your answer would be f(-1) = -1.

The second equation gives you a possible range for any numbers between zero and anything less than three. Notice how in this one, the zero is included. This is because when you actually go to draw a piecewise function, your values can't repeat, or else it wouldn't be a function. So, since the problem asks you to find f(0), you need to use the second equation since it is the one that includes zero in its possible values. Thus, you plug in your number. In this case, the number is 0, so x = 0. The answer is to f(0) = 0

Lastly, the third equation is for any values that are three or bigger. This one includes the three in its possible values. If they gave you a value like f(4), you just do the same as in the last examples. 4^2 - 1 = 15. So, f(4) = 15.

And that's all there is to it. Just plug in the value they give you into the appropriate equation, and you'll be good to go. Hope this helped!

Step-by-step explanation:

1)  Total rectangle area =  W x H = 12 x 8 = 96 cm^2

 area of triangle (shaded portion) = 1/2 base * height = 1/2 * 7 x 8 = 28 cm^2

              Nonshaded portion = 96 - 28 cm^2 = 68 cm^2

          ratio shaded:nonshaded is then   28 : 68 = 7:17

2)   Look at the two middle triangles :  Height of each = 8 cm

       then reading across the diagram  height + base + height = 21 cm

            so base = 5 cm

   area of ONE triangle = 1/2 * base * height = 1/2 * 5 * 8 = 20 cm^2

        total area for FOUR of them  = 80 cm^2

Answer:

y = 27

Step-by-step explanation:

The output is the value of y when x = 5

Substitute x = 5 into the function , that is

y = 12 + 3(5) = 12 + 15 = 27 ← output

Answer:

Step-by-step explanation:

For Question 3, we are simply taking an input for the function, as a value of x and solving the equation. For part a, we substitute 3/14 into the first function, and solve it:

f(x) = 7(3/14) + 2

f(x) = 21/14 + 2

f(x) = 49/14

f(x) = 7/2

For part b, we take the input of -3 into the second function and solve the equation:

h(x) = 4(-3)^2

h(x) = 4(9)

h(x) = 36

For Question 4, we are simply solving this equation by isolating the x variable. First, we simplify the equation to 4-5x+15+2x = -2 and simplify this again to -3x+19 = -2. Now, we can subtract 19 from both sides of the equation to get -3x = -21. Lastly, we isolate the x variable by dividing both sides of this equation by -3, to get x = 7.