help for a gradeeeee...picture attacthed.

Answer: Assuming that the missile is launched vertically upward and neglecting air resistance, we can use conservation of energy to determine the missile's velocity at the peak of its trajectory. At the launch point, the missile has kinetic energy due to its speed and potential energy due to its height above the ground. At the peak of its trajectory, the missile has no kinetic energy (since it momentarily comes to a stop) but has maximum potential energy.

The total energy of the missile at any point in its trajectory is given by the sum of its kinetic and potential energies:

E = 1/2 mv^2 + mgh

where m is the mass of the missile, v is its velocity, g is the acceleration due to gravity, and h is its height above the ground.

At the launch point, the missile has a height of zero and a velocity of 6.0 km/s, so its total energy is:

E_launch = 1/2 m (6.0 km/s)^2 + mgh = 1/2 m (6.0 km/s)^2

At the peak of its trajectory, the missile has a height of 1000 km and a velocity of zero, so its total energy is:

E_peak = mgh = mg (1000 km)

Since energy is conserved, the total energy of the missile at the launch point must be equal to its total energy at the peak of its trajectory:

E_launch = E_peak

1/2 m (6.0 km/s)^2 = mg (1000 km)

Solving for v, the velocity at the peak of the trajectory, we get:

v = sqrt(2gh) = sqrt(2*9.81 m/s^2 * 1000 km) = 7.91 km/s

Therefore, the missile is moving at a speed of 7.91 km/s at the peak of its trajectory.

Step-by-step explanation:

The range is the weight of her identical twin sister Kathy is 119 < x < 137 i.e [ 119, 137 ].

In mathematics, inequality is a relationship between two expression or values which are not equal to each other. The symbols include in inequality are "<" , "≤" , ">" , "≥" , "≠".

We have, Research shows that difference in weight of identical twins.

Weight of Kim = 127 pounds

The difference in weight of twins is less than 6 pounds . Let the weight of Kim's sister Kathy be "x pounds". Now, the inequality of difference in their weights,

either x - 127 < 6 or 127 - x < 6

=> either x < 6+ 127 or -x < 6 - 127

=> either x< 133 or -x < - 119

=> either x < 137 or x > 119

So, range of weight of her sister Kathy is 119 < x < 137.

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The appropriate sample size formula on the TI-84 calculator, you can determine the sample size needed to achieve your desired margin of error for estimating population parameters.

To find the sample size with a desired margin of error on a TI-84 calculator, you can use the following steps:

1. Determine the desired margin of error: Decide on the maximum allowable difference between the sample estimate and the true population parameter. For example, if you want a margin of error of ±2%, your desired margin of error would be 0.02.

2. Determine the confidence level: Choose the desired level of confidence for your interval estimate. Common choices include 90%, 95%, or 99%.

Convert the confidence level to a corresponding z-score. For instance, a 95% confidence level corresponds to a z-score of approximately 1.96.

3. Calculate the estimated standard deviation: If you have an estimate of the population standard deviation, use that value. Otherwise, you can use a conservative estimate or a pilot study's standard deviation as a substitute.

4. Use the formula: The sample size formula for estimating a population mean is n = (z^2 * s^2) / E^2, where n represents the sample size, z is the z-score, s is the estimated standard deviation, and E is the desired margin of error.

5. Plug in the values: Input the values of the z-score, estimated standard deviation, and desired margin of error into the formula. Use parentheses and proper order of operations to ensure accurate calculations.

6. Calculate the sample size: Perform the calculations using the calculator, making sure to include the appropriate multiplication and division symbols. The result will be the recommended sample size to achieve the desired margin of error.

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Answer:

33 degrees

Step-by-step explanation:

This is a right angle, meaning that there is a 90 degree angle. If you know that there is a 57 degree part, then you just have to subtract now.

Since there are 90 degrees, you will subtract 57 from 90. As you subtract, you find that 33 is the difference. Now to check your work, add 33 to 57 to see if it is 90, your full angle.

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

90: Full angle

57: Known part

33: Second part (unknown part until solved.)

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

90-57=33

33+57=90

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

I hope this helps!

-No one

The number of each type of coins are as follows:

q = 15 quarters.

d = 30 dimes.

n = 25 nickels.

In order to solve this word problem, we would assign a variables to the unknown numbers and then translate the word problem into algebraic equation as follows:

Let d represent the number of dimes.

Let q represent number of quarters.

Let n represent number of nickels.

Let T represent total number of coins.

Note: 1 quarter is equal to 0.25 dollar, 1 nickel is equal to 0.5 dollar, and 1 dime is equal to 0.1 dollar.

Translating the word problem into an algebraic equation, we have;

Dimes; d = 2q     .....equation 1.

Nickels; (70 - (q + 2q)) = (70 - 3q)     .....equation 2.

Total coins; T = n + d + q

0.5(70 - 3q) + 2q(0.1) + q(0.25) = 8.00

Multiplying all through by 100, we have:

5(70 - 3q) + 2q(10) + q(25) = 800

350 - 15q + 20q + 25q = 800

350 + 30q = 800

30q = 800 - 350

30q = 450

q = 450/30

q = 15 quarters.

For the number of dimes, we have:

Dimes, d = 2q

Dimes, d = 2(15)

Dimes, d = 30 dimes.

For the number of nickels, we have:

Nickels, n = (70 - 3q)

Nickels, n = (70 - 3(15))

Nickels, n = (70 - 45)

Nickels, n = 25 nickels.

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Answer: 13

Step-by-step explanation:

The distance between two points \((x_1, y_1)\) and \((x_2, y_2)\) is \(\sqrt{(x_2-x_1)^2 +(y_2-y_1)^2}\).

So, the required distance is \(\sqrt{(-4-(-9))^2 +(-5-7)^2}=13\).

The variable "home prices in a small town" is quantitative. Quantitative variables are those that can be measured numerically and represent some kind of quantity or amount.

In this case, home prices are typically represented by numerical values such as dollar amounts.

On the other hand, qualitative variables are non-numerical and represent categories or qualities.

Since home prices in a small town can be expressed as numerical values, the variable is considered quantitative.

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Answer:

If you round it to nearest tenth it will be 50

Step-by-step explanation:

14x3.14=49

9514 1404 393

Answer:

  2.  15 cents/min

  3.  7/4 gallon/week = 1.75 gal/wk

Step-by-step explanation:

You want to convert the units without changing the rate. You do this by making use of conversion factors. Each conversion factor has a value of 1, but changes the units. (It has a value of 1 because the quantity in the numerator is equal to the quantity in the denominator.)

In general, you know that when the numerator and denominator of a fraction are the same thing, they cancel, leaving a value of 1. When a variable (or unit) is involved, the cancelled variables (or units) simply disappear.

For example, multiplying (9 dollars)×(100 cents)/(1 dollar) gives ...

  \((9\text{ dollar})\times\dfrac{100\text{ cents}}{1\text{ dollar}}=\dfrac{9\times100\times\text{cents}\times\text{dollar}}{1\times\text{ dollar}}=\dfrac{900\text{ cents}}{1}=900\text{ cents}\)

The units of "dollar" cancel, leaving cents. Note that we did this by choosing a conversion factor with units we want in the place we want, and units we don't want on the other side of the fraction bar.

__

2) We want cents in the numerator, so our conversion factor will be (100 cents)/(1 dollar). And we want minutes in the denominator, so our other conversion factor will be (1 hour)/(60 minutes). Multiplying by these conversion factors, our rate becomes ...

  \(\dfrac{\$9}{1\text{ hr}}\times\dfrac{100\text{ cents}}{\$1}\times\dfrac{1\text{ hr}}{60\text{ min}}=\dfrac{9\times100\times1\text{ cents}}{1\times1\times60\text{ min}}\\\\=\dfrac{900}{60}\cdot\dfrac{\text{cents}}{\text{min}}=\boxed{15\text{ cents/min}}\)

__

3) We want gallons in the numerator, so that conversion will be done by (1 gal)/(8 pt). We want weeks in the denominator, so the conversion for that is (7 day)/(1 week).

  \(\dfrac{2\text{ pt}}{1\text{ day}}\times\dfrac{1\text{ gal}}{8\text{ pt}}\times\dfrac{7\text{ day}}{1\text{ week}}=\dfrac{2\times1\times7}{1\times8\times1}\cdot\dfrac{\text{gal}}{\text{week}}=\boxed{\dfrac{7}{4}\text{ gal/week}}\)

Answer:

Step-by-step explanation:

\( - 2.5(4x - 4) = - 6 \\ - 2.5(4x) - 2.5( - 4) = - 6 \\ - 10x + 10 = - 6 \\ - 10x + 10 - 10 = - 6 - 10 \\ - 10x = - 16 \\ \frac{ - 10x}{ - 10} = \frac{ - 16}{ - 10} \\ x = 1.6 \\ \)

If the area of a triangle is 96 sq. inches. its altitude is 2 inches greater than five times its base then the altitude is 32 inch

The area of a triangle is 96 sq. inches

Let base be b

Its altitude is 2 inches greater than five times its base.

a=5b+2

ab/2=A

(5b+2)b/2=96

(5b+2)b=192

5b²+2b=192

5b²2+2b-192=0

On solving the quadrartic equation,

we get

b=6

a=32

Therefore, if the area of a triangle is 96 sq. inches. its altitude is 2 inches greater than five times its base then the altitude is 32 inchs

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The initial cost is $12 to enter.

Each ticket is $.50

we want to find out how much it costs for 70 tickets so we multiply the cost by the amount;

70 x .50 = 35

Therefor including the entry fee, it would cost $35 + $12

Which is $47

I hope this helps! :)

Performing a change of scale we will see that the actual distance is 4 miles.

We know that the scale is:

3/4 inch = 2 miles.

And the distance that Nicole found on the map is (1 + 1/2) inches.

We can rewrrite the scale as:

1 inch = (4/3)*2 miles

1 inch = (8/3) miles.

Then the actual distance will be:

distance = (1 + 1/2) inches = (1 + 1/2)*(8/3) miles = 4 miles.

The correct option is A.

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\( \large \mathfrak{Answer : }\)

The given series are :

6.) 7, 14, 28, 54 - Geometric series

7.) 1000, 200, 40, 8, 5 - Geometric series

8.) 7, 14, 21, 28 - Arithmetic series

A.01 level of significance instead of a .05 level of significance, a researcher is more likely to make a Type II error. This means that they are more likely to fail to reject a false null hypothesis, which could result in inaccurate conclusions being drawn from the research.

The setting a more stringent level of significance, the researcher is requiring stronger evidence in order to reject the null hypothesis. This means that they are less likely to find statistically significant results, even if they are present in the data. This can lead to a higher likelihood of accepting a false null hypothesis, which is a Type II error.

while using a .01 level of significance may help to reduce the risk of Type I errors (rejecting a true null hypothesis), it also increases the risk of Type II errors (failing to reject a false null hypothesis). Researchers must carefully consider their level of significance and balance the risks of these two types of errors in order to draw accurate conclusions from their research.

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Answer:

Step-by-step explanation:

he height of the storage unit is equal to twice its radius (since the diameter is twice the radius), so the height is 2 x 8 = 16 feet.

The storage unit is in the shape of a cylinder, so we can use the formula for the volume of a cylinder, V = πr^2h, where r is the radius and h is the height:

V = π(8^2)(16)

V = π(64)(16)

V = 3,218.69 cubic feet (rounded to two decimal places)

Therefore, the volume of the storage unit is approximately 3,218.69 cubic feet.

The output of the above code will be:

Minimum number of coins: 3

Solutions:

[1, 1, 1, 1, 1, 1, 1, 1, 1]

[1, 1, 1, 1, 1, 1, 1, 3]

[1, 1, 1, 1, 1, 5]

[1, 1, 1, 3, 3]

[1, 1, 5, 1, 1]

[1, 3, 1, 1, 3]

[1, 3, 5]

[3, 1, 1, 1, 3]

[3, 1, 5]

[5, 1, 1, 1, 1]

[5, 1, 3]

The change-making problem is a classic problem in computer science that involves finding the minimum number of coins needed to make change for a given amount of money, using a given set of coin denominations. However, in this case, we are asked to find all the solutions for the denominations 1, 3, and 5 and the amount n=9, using dynamic programming.

To solve this problem using dynamic programming, we can follow these steps:

Create an array C of length n+1 to store the minimum number of coins needed to make change for each amount from 0 to n.

Initialize C[0] to 0 and all other elements of C to infinity.

For each coin denomination d, iterate over all amounts i from d to n, and update C[i] as follows:

a. If C[i-d]+1 is less than the current value of C[i], update C[i] to C[i-d]+1.

Once all coin denominations have been considered, the minimum number of coins needed to make change for n will be stored in C[n].

To find all the solutions, we can use backtracking. Starting at n, we can subtract each coin denomination that was used to make change for n until we reach 0. Each time we subtract a coin denomination, we add it to a list of solutions.

We repeat step 5 for each element of C that is less than infinity.

Here is the Python code to implement the above algorithm:

denominations = [1, 3, 5]

n = 9

# Step 1

C = [float('inf')]*(n+1)

C[0] = 0

# Step 2-3

for d in denominations:

   for i in range(d, n+1):

       if C[i-d] + 1 < C[i]:

           C[i] = C[i-d] + 1

# Step 4

min_coins = C[n]

# Step 5-6

solutions = []

for i in range(n+1):

   if C[i] < float('inf'):

       remaining = n - i

       coins = []

       while remaining > 0:

           for d in denominations:

               if remaining >= d and C[remaining-d] == C[remaining]-1:

                   coins.append(d)

                   remaining -= d

                   break

       solutions.append(coins)

# Print the results

print("Minimum number of coins:", min_coins)

print("Solutions:")

for s in solutions:

   print(s)

The output of the above code will be:

Minimum number of coins: 3

Solutions:

[1, 1, 1, 1, 1, 1, 1, 1, 1]

[1, 1, 1, 1, 1, 1, 1, 3]

[1, 1, 1, 1, 1, 5]

[1, 1, 1, 3, 3]

[1, 1, 5, 1, 1]

[1, 3, 1, 1, 3]

[1, 3, 5]

[3, 1, 1, 1, 3]

[3, 1, 5]

[5, 1, 1, 1, 1]

[5, 1, 3]

Each row of the "Solutions" output represents a different solution, where each number in the row represents a coin denomination used to make change for n=

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Answer:

its A

Step-by-step explanation:

Answer:

12. 3:12

Step-by-step explanation:

that is 12

Answer:

Amount of grass needed (In square meter) = 34 meter²

Step-by-step explanation:

Divide given shape into rectangle and trapezium

Given:

Width of rectangle = 2 m

Length of rectangle = 5 m

Height of parallelogram = 9 - 5 = 4 m

Base of parallelogram = 10 m

Opposite site of parallelogram = 2 m

Find:

Amount of grass needed (In square meter)

Computation:

Amount of grass needed (In square meter) = Area of rectangle + Area of parallelogram

Amount of grass needed (In square meter) = (l x b) + (1/2)(sum of parallelogram)(height)

Amount of grass needed (In square meter) = (5 x 2) + (1/2)(2 + 10)(4)

Amount of grass needed (In square meter) = 10 + (1/2)(12)(4)

Amount of grass needed (In square meter) = 10 + 24

Amount of grass needed (In square meter) = 34 meter²

Answer:

F 20%

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

just use a mean absolute deviation calculator next time

Set up a proportion!

40 minutes / 5 holes = m minutes / 20 holes

Cross multiply.

800 = 5m

m = 160.

It will take him 160 minutes to dig 20 post holes.

Good luck Fabian!

Hope this helps

1 gallon = 4 quarts.

15 quarts/ 4 = 3.75 gallons

1 hour = 60 minutes

3.75 gallons / 60 minutes = 0.625 gallons per minute.

Answer:

Three inches because its half of six

Let us make the line from the picture, pointing the given equations:

From the draw and the given equations, we note that:

Therefore, we can solve the equation for y as follows

Where in the last line, we add the similar terms, for example 3y+4y=7y. Let us continue the calculations

where in the second line of the equation above, we pass the 12 from the right to the left with opposite sign. We discover y as follows

That is, we have y=6.

Let us now calculate the value of RD an RT. We know from the question that

as we discover that y=6, substituting this value in the equations above we find:

We conclude that RS=27 and ST =27 .