PLEASE DO NOT TELL ME THE ANSWER! Please just tell me how I can find the answer. Thank you!

Answer:

40+2s=60-3s

Step-by-step explanation:

The red balloon starts 40 feet off the ground and rises 2 feet per second. This means the height of the red ballon is 40+2s.

The blue balloon starts 60 feet off the ground at starts falling 3 feet per second. This means the height of the blue balloon is 60-3s.

Because we want to find out when the balloons will be the same height, we set them equal to each other.

40+2s=60-3s

Answer:

x=22

Step-by-step explanation:

7x+6=160.

Lets start by moving 6 over to the other side. We can do this by subtracting 6 from both sides of the equation.

7x+6-6=160-6

7x=154

Now, let's isolate x by getting rid of the 7. The 7 is being multiplied with x, so to get rid of it we have to divide both sides by 7.

7x/7 = 154/7

x=22

Look Below :

Step-by-step explanation:

160 - 6 = 7x

154 = 7x

Or

7x = 154

x = 22

The correct answer is option C. 184.51.

The sample mean is 184.51 , which is lower than the critical value of 181.27. Thus, we reject the null hypothesis.

Here is a step-by-step explanation:
1. The critical value is 181.27.
2. We are looking for a sample mean that is greater than the critical value.
3. Option A (174.27) is less than the critical value, so it is not correct.
4. Option B (178.74) is also less than the critical value, so it is not correct.
5. Option C (184.51) is greater than the critical value, so it is correct.
6. Option D (181.18) is less than the critical value, so it is not correct.

The sample mean that would make the following statement correct is option C. 184.51. This is because the sample mean is greater than the critical value, which means that we reject the null hypothesis.

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The correct answer is (d) The price must be replaced with a relative price, and the marginal values must be replaced with the corresponding Marginal Rates of Substitution.

When the value of a public good cannot be expressed in monetary terms, the Samuelson condition still holds, but some modifications are required. In this case, the per-unit price (p) used in the Samuelson condition needs to be replaced with a relative price, which represents the trade-off between the public good and other goods or services. Additionally, the marginal values (MV) of the public good need to be replaced with the Marginal Rates of Substitution (MRS), which measure the rate at which one person is willing to substitute the public good for another good.

Therefore, to determine the efficient level of the public good, the modified Samuelson condition uses a relative price and the corresponding Marginal Rates of Substitution.

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Answer:

-5m/2

Step-by-step explanation:

-m+ (-2m) +(-3m)+(-4m) +(-4m)+(-3m)+(-2m)+(-m)/8

-m-2m-3m-4m-4m-3m-2m-m/8

-20m/8

-5m/2

Answer:

you have to simplify it first and then miltiply

Step-by-step explanation:

Answer:

one

Step-by-step explanation:

Any point where x = 0 will fall on the y axis. The y values do not matter for this question.

Answer:

1

Step-by-step explanation:

Figure (a) have similar triangles, while figure (b) do not; and the length and the width of the rectangle are 12 cm and 9 cm,

Figure (a)

The similar triangles in this figure are

ABC and AED

This is because:

The triangles have similar corresponding sides and congruent angles

Also, ABC is divided by 3 to get AED

So, we have

x = 15/3 = 5

y = 10/3

Figure (b)

The triangles in this figure are not similar triangles

We have

Area = 108

Width : Length = 3 : 4

So, we have

Width = 3/4Length

The area is

Area = Length * Width

Area = Length * 3/4Length

Length * 3/4Length = 108

3/4Length² = 108

Length² = 144

Length = 12

Recall that

Width = 3/4Length

Width = 3/4 * 12

Width = 9

Hence, the length and the width of the rectangle are 12 cm and 9 cm, respectively

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The voltage of the speaker when the power is 400 watts will be given by ± 80 volt.

Given the equation is,

V = 4 √P

here V is the voltage of an audio system's speaker and P is the power of the audio system's speaker.

Here it is given that we have to design a speaker with 400 watts of power. So the equation becomes when P = 400

V = 4 √400

We know that, √400 = ± 20

So, V = 4 * (± 20) = ± 80

Hence the voltage of the speaker will be given by ± 80 volt.

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Answer:

(Attached Below)

Step-by-step explanation:

Answer:

x \(\geq\) 3

Step-by-step explanation:

8x - 6 \(\geq\)  12 + 2x

First, take the smallest value of x away from the largest.

6x - 6 \(\geq\) 12

Then, add 6 on both sides. (Always do the opposite!)

6x \(\geq\) 18

Finally, divide by 6

x \(\geq\) 3

the velocity of the raft before the swimmer reaches it is approximately -0.231 m/s to the north.

solve this problem, we can use the principle of conservation of momentum. The total momentum before and after the swimmer climbs onto the raft should be the same.

Let's denote the initial velocity of the raft as v.

The initial momentum of the swimmer is given by:
Momentum_swimmer = mass_swimmer * velocity_swimmer
= 58 kg * 1.6 m/s = 92.8 kg·m/s (north)

The initial momentum of the raft is:
Momentum_raft = mass_raft * velocity_raft
= 142 kg * v (unknown velocity)

The combined momentum after the swimmer climbs onto the raft is:
Momentum_combined = (mass_swimmer + mass_raft) * velocity_combined
= (58 kg + 142 kg) * 0.32 m/s = 60 kg * m/s (north)

Since momentum is conserved, we can set up an equation:
Momentum_swimmer + Momentum_raft = Momentum_combined

92.8 kg·m/s + 142 kg * v = 60 kg * m/s

Simplifying the equation:
142 kg * v = 60 kg * m/s - 92.8 kg·m/s
142 kg * v = -32.8 kg·m/s

Dividing both sides by 142 kg:
v = -32.8 kg·m/s / 142 kg
v ≈ -0.231 kg·m/s

Therefore, the velocity of the raft before the swimmer reaches it is approximately -0.231 m/s to the north.

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Answer: -56

Step:

Plug in the numbers into the equation

-3(5)² + 4(5)(1)-1³

Any expression multiplied by 1 remains the same. Evaultuate the power.

-3×25+4×5-1³

Multiply the numbers. 1 raised to any power equals 1.

-3×25+20-1

Multiply the numbers

-75+20-1

Calcualte the sum or difference and you get -56.

Hope this helpsʕ•ᴥ•ʔ

Answer:

8

Step-by-step explanation:

For the smallest possible length, this has to be one of the shorter sides. Let the length of this side be x.

So, by the triangle inequality theorem, 1+x>8, which means x>7.

So, the smallest possible whole number length is 8.

In a case whereby a ball is thrown downward from the top of a 140​-foot building with an initial velocity of 16 feet per second. the time the ball is thrown will it strike the​ ground at t = 2.5 or -3.5.

Height of building = 140 ft

Initial velocity, u = 16 ft/sec

the equation given is

h = -16t² -16t +140

h(t) = -16t² -16t +140

AT h(t) = 0 , We can divide by -2 and have

(8t² + 8t - 70) = 0

8t² + 8t - 70 = 0

Then if we solve with quadratic equation formula where  a=8, b=8, c=- 70 then the root will be -7/2 and 5/2 then  t = 2.5 or -3.5

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complete question;

A ball is thrown downward from the top of a 140​-foot building with an initial velocity of 16 feet per second. the height of the ball h in feet after t seconds is given by the equation h equals negative 16 t squared minus 16 t plus 140. how long after the ball is thrown will it strike the​ ground?

Frank cannot recover the reward because he was unaware of the reward being offered by Emma.

In order to claim the reward, one typically needs to have knowledge of the reward prior to finding and returning the lost item or fulfilling the specified condition. Since Frank was unaware of the reward, he would not have had the opportunity to intentionally seek the dog with the expectation of receiving the reward. As a result, Emma is not obligated to provide the reward to Frank in this situation.

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If the condition f(-x) = -f(x) is satisfy then the function is an odd function. Then the odd function is f(x) = 6x³ + 2x.

Odd Function - A true function f(x) is said to be an odd function if the output value of f(-x) is the same as the negative of f(x) for all values of x in the domain of f.

The equation should be stored in an odd function:

f(-x) = -f(x)

Then the functions are given below.

f(x) = 3x² + x

f(x) = 4x³ + 7

f(x) = 5x² + 9

f(x) = 6x³ + 2x

Then replace x with the negative x, then we have

f(x) = 3(-x)² + (-x) = 3x² - x =

f(x) = 4(-x)³ + 7 = -4x³ + 7

f(x) = 5(-x)² + 9 = 5x² + 9

f(x) = 6(-x)³ + 2(-x) = -6x³ - 2x = - (6x³ + 2x)

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Answer: D

Step-by-step explanation:

(a) The linear system Aa = b for the linear regression problem using the given points is:

-2a₀ + 2a₁ = 2

0a₀ + 0a₁ = 0

1a₀ + 2a₁ = 2

2a₀ + 0a₁ = 0

(a) The overdetermined linear system Aa = b is formed by writing down the equations for fitting a straight line to the given points. Each equation represents a point and involves the coefficients a₀ and a₁ of the line.

-2a₀ + 2a₁ = 2

0a₀ + 0a₁ = 0

1a₀ + 2a₁ = 2

2a₀ + 0a₁ = 0

(b) In MATLAB, the thin QR factorization of the system matrix A can be computed using the 'qr' function. This factorization decomposes the matrix A into the product of two matrices, Q and R.

(c) Once the QR factorization is obtained, the linear regression problem can be solved by applying the backslash operator to the factorized matrix A and the target vector b. This will yield the coefficients a₀ and a₁ that best fit the given points.

(d) With the coefficients obtained from the linear regression solution, a line can be plotted in MATLAB by generating a range of x-values and using the line equation y = a₀ + a₁x. The resulting line will represent the regression line that best fits the given points.

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Answer:

B

It's a Reflection in the y-axis

Answer:

Step-by-step explanation:

Translations on the coordinate plane has different coordinates of the shape, and reflect.

Reflections on coordinate plane have the same coordinates, they are just in different quadrants.

As you can see, the coordinates of the first triangle on the left is (-6, -2), (-2, -4), and (-4, -6).

On the right triangle, the coordinates are (6, -2), (2, -4), and (4, -6).

Your answer is B.

The confidence interval or the mean noise level is (108.17,150.23) and sample standard deviation is 12.52.

Given noise levels:108,133,140,129,136. and confidence level 98%.

We have to find the confidence level and the sample standard deviation of the given data.

Confidence level=98%.

n=5

Sample standard deviation=\(\sqrt{(x-x bar)^{2} /n-1}\)

=\(\sqrt{626.8/4}\)

=\(\sqrt{156.7}\)

=12.52

critical t value at 98% confidence level with degree of freedom(5-1) is 3.747

Standard error= critical t*s/\(\sqrt{n}\)

Standard error is the difference between the real values and calculated values.

=3.747*12.52/\(\sqrt{5}\)

=46.91/2.23

=21.03

Upper confidence interval=Mean +standard error

=129.2+21.03

=150.23

Lower confidence interval=Mean - standard error

=129.2-21.03

=108.17

Hence the confidence interval is (108.17,150.23) ,sample standard deviation is 12.52 and critical t value is 3.747.

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Answer: In a right triangle, the length of the hypotenuse is the square root of the sum of the squares of the other two legs. So, using the Pythagorean theorem, the other leg would be the square root of (21^2 - 15^2) = (441 - 225) = 216 = 14.69 inches.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let x be the variable.

One fourth times the difference of ten and x is 2/3

1/4 (10 - x) = 2/3

10 - x = 3/2

-x = 3/2 - 10

x = -3/2 + 10

x = 13/2

The answer is:

\(\rm{\dfrac{1}{4}(10-d)=\dfrac{2}{3}}\)

Work/explanation:

First, the variable is d

Then, the difference of 10 and d is 10 - d.

One-fourth is 1/4.

The equation is : \(\rm{\dfrac{1}{4}(10-d)=\dfrac{2}{3}}\).

Answer:

250 readers

Step-by-step explanation:

1. 4% = 10

2. 100% = 250

a. 4% x 25 = %100

b. 10 x 25 = 250

I hope this helps!

Answer:

250

Step-by-step explanation:

Given that

Letter to the editor = 10

Also it is given that 10 is the 4% of total readers of the newspaper.

Let x be the number of readers of the newspaper

It can be written as:

10=4% of x

Converting the percentage into decimal

10=0.04x

10. = 0.04x

0.04. 0.04

x=250

The newspaper has 250 readers.

Hence,

The local newspaper has 250 readers in total

Plz like it took FOREVER

Answer:

Step-by-step explanation:

=> 35 + 2x = 60

=> 2x = 60-35

=> 2x = 25

=> x = 25/2

=> x = 12.5

a) Using the principles of a normal distribution, the percentage of data that lies between 7 and 16 is 95%.

b) The two numbers that 68% of the data lie between are 7 and 10.

c) The percentage of numbers that are larger than 13 is 32%.

A normal distribution is a probability distribution where the values of a random variable show a symmetrical distribution.

A symmetrical distribution implies that the values are equally distributed on the left and right side of the central tendency.

This symmetrical relationship means that a bell-shaped curve is formed.

The mean of the normal distribution = 10

The standard deviation = 3

z = (x - μ) / σ

Where:

z = the z-score

x = the value

μ = the mean

σ = the standard deviation.

For x = 7:

z = (7 - 10) / 3

z = -1

This means that 7 is one standard deviation below the mean.

For x = 16:

z = (16 - 10) / 3

z = 2

This means that 16 is two standard deviations above the mean.

Using the empirical rule, about 68% of the data falls within one standard deviation of the mean, and about 95% of the data falls within two standard deviations of the mean.

The percentage of data that lies between 7 and 16 is 95% (100% - 5%)

b) Mean = 10

Standard deviation = 3

A number below = 7 (10 - 3)

A number above = 13 (10 + 3)

Thus, 68% of the data lie between 7 and 13.

c) The percentage of numbers that are larger than 13, using the z-score formula to find how many standard deviations away from the mean is 13.

z = (x - μ) / σ

For x = 13:

z = (13 - 10) / 3

z = 1

This means that 13 is one standard deviation above the mean.

The empirical rule says that about 68% of the numbers fall within one standard deviation of the mean, and about 95% of the numbers fall within two standard deviations of the mean.

The percentage of numbers that are larger than 13 = 32% (100% - 68%).

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Answer: The discount is $13.75, which is found by multiplying the original price by the discount percentage, 0.25.

Step-by-step explanation:

Answer:

C and E

Step-by-step explanation:

the position of the minus either up or down affects both the numerator and denominator.

but if both number have minus the minus cancels each other

Answer:

B, C, E

Step-by-step explanation:

A is -/- and therefore +

B is - -/- = -+ = -

C is -/+ = -

D is - -/+ = -- = +

E is +/- = -

Answer:

Step-by-step explanation:

If you mean 3x^3 - 42x^2 - 4x + 5 = 0 you can graph it manually or with technology

The roots are 14.09, 0.30 and -0.39 to nearest hundredth.

Answer:

b i think but y are u looking forward to this