The table shows the results of a recent survey of sixth grade students at Potter Middle School about their favorite sports.


What fraction of the students chose football or soccer? Express your answer in simplest form.

Answer:

T= 1.29k

Step-by-step explanation:

T= total price which is an independent variable

? kgs since we dont know how many kilograms she will buy.

k = number of kilograms of food

Each kilos costs is 1.29

T= 1.29k

Answer:

90000 km

Step-by-step explanation:

1 hour = 3600 sec

distance = speed x time

              = 25 km/s x 3600 s

               = 90000 km

standard form = 9 x 10⁴

The pH of a 0.65 M solution of pyridine is 8.23.

Pyridine is a weak base with the chemical formula C5H5N. The given value of the kb value for pyridine is 1.7 × 10−9.

We have to determine the pH of a 0.65 M pyridine solution, we can use the formula for calculating pH:

pOH= - log10 (Kb) - log10 (C)

where

Kb = 1.7 × 10-9 and C = 0.65, since pyridine is a weak base, we can assume that the solution is less acidic, and the value of pH can be calculated by the formula: pH = 14 - pOH

1: Calculate pOH of the solution:

pOH = - log10 (Kb) - log10 (C)

pOH = - log10 (1.7 × 10-9) - log10 (0.65)

pOH = 5.77

2: Calculate pH of the solution:

pH = 14 - pOH

pH = 14 - 5.77

pH = 8.23

Learn more about chemical solution at:

https://brainly.com/question/31744670

#SPJ11

43662 dude. .........ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

Michael is 3 33 times as old as brandon. 18 1818 years ago, michael was 9 99 times as old as brandon so michael is 272454 years old.

Since we have given that

Michael is 3 times as old as Brandon .

Let the age of Brandon be 'x'.

Let the age of Michael be 333x

According to question, 181818 years ago, Michael was 999 times as old as Brandon.

181818 years ago,

Age of Brandon was x-181818

Age of Michael was 333x-181818

So, our equation becomes,

999( x- 181818) = 333x - 181818

999x - 181636182 = 333x - 181818

666x = 181454364

x = 272454

Hence, Age of Brandon is 272454 years.

Learn more about Age problems:

https://brainly.com/question/2785518

#SPJ4

Answer:

She can buy 4 books

Step-by-step explanation:

If each notebook is $3, and she bought two, she'd be left with $32 because 40-6=32. Simply multiply 8 by 4 to get 32, which is the rest of her money. Hope this helps!

Answer:

7:42

Step-by-step explanation:

First off you add the ratio together-

6+1=7

Then you divide-

49÷7= 7

7 is equal to 1 in this ratio.

To write out the ratio you need to multiplicate-

7×1=7

and

6×7= 42

Leaving the as-

7:42

Answer:

7:42  

Step-by-step explanation:

First, add up the two numbers in the ratio to get 49.

Next, divide the total amount by 49, i.e. divide £16 by 8 to get £5. £5 is the amount of each 'unit' in the ratio.

Then you need to divide the total amount using that number i.e. 49/16 = 7/42.

To work out how much each person gets, you then multiply their share by the ratios. Therefore, the answer is 7 yd and 42 yds.

Answer:

I think the asnwer A or B !!

Step-by-step explanation:

(a) Parameter being estimated in the given information is the difference between two proportions (p_1 - p_2).

(b) A 95% confidence interval is given by  (0.075, 0.225)

(a) The parameter being estimated is the difference between two population proportions, which is denoted by (p_1 - p_2).

(b) The margin of error for a 95% confidence interval is 5%, which means that the critical value of z is 1.96 (obtained from a standard normal distribution table). Using the formula for the margin of error, we can write:

1.96 * √(p_1_hat*(1-p_1_hat)/n_1 + p_2_hat*(1-p_2_hat)/n_2) = 0.05

where p_1_hat and p_2_hat are the sample proportions from the two samples, and n1 and n2 are the sample sizes.

Solving for p_1_hat - p_2_hat, we get:

p1_hat - p2_hat = ±0.075

Since we are interested in a 95% confidence interval, we can subtract and add this value from P1 - P2 to obtain the interval:

P_1 - P_2 ± 0.075

Substituting the given value of P_1 - P_2 = 0.15, we get:

95% Confidence Interval: (0.075, 0.225)

To know more about the "confidence interval" concept: https://brainly.com/question/17097944

#SPJ11

Answer:

\(y = \frac{1}{2}e^x -\frac{1}{2} e^{2-x}\)

Step-by-step explanation:

Given

\(y=c_1e^x +c_2e^{-x\)

\(y(1) = 0\)

\(y'(1) =e\)

Required

The solution

Differentiate \(y=c_1e^x +c_2e^{-x\)

\(y' = c_1e^x - c_2e^{-x}\)

Next, we solve for c1 and c2

\(y(1) = 0\) implies that; x = 1 and y = 0

So, we have:

\(y=c_1e^x +c_2e^{-x\)

\(0 = c_1 * e^1 + c_2 * e^{-1}\)

\(0 = c_1 e + \frac{1}{e}c_2\) --- (1)

\(y'(1) =e\) implies that: x = 1 and y' = e

So, we have:

\(y' = c_1e^x - c_2e^{-x}\)

\(e = c_1 * e^1 - c_2 * e^{-1}\)

\(e = c_1 e - \frac{1}{e}c_2\) --- (2)

Add (1) and (2)

\(0 + e = c_1e + c_1e + \frac{1}{e}c_2 - \frac{1}{e}c_2\)

\(e = 2c_1e\)

Divide both sided by e

\(1 = 2c_1\)

Divide both sides by 2

\(c_1 = \frac{1}{2}\)

Substitute \(c_1 = \frac{1}{2}\) in \(0 = c_1 e + \frac{1}{e}c_2\)

\(0 = \frac{1}{2} e+ \frac{1}{e}c_2\)

Rewrite as:

\(\frac{1}{e}c_2 = -\frac{1}{2} e\)

Multiply both sides by e

\(c_2 = -\frac{1}{2} e^2\)

So, we have:

\(y=c_1e^x +c_2e^{-x\)

\(y = \frac{1}{2}e^x -\frac{1}{2} e^2 * e^{-x}\)

\(y = \frac{1}{2}e^x -\frac{1}{2} e^{2-x}\)

Answer:

84

Step-by-step explanation:

70% of 120= 84

The height of the building is 71 meters.

We can solve this problem using the similar triangles. The height of the building can be determined by setting up the following proportion:

(the height of pole) / (length of pole's shadow) = (height of building) / (length of building's shadow)

Substituting the given values:

2.8 / 1.49 = (height of building) / 37.5

To find the height of the building, we can cross-multiply and solve for it:

(2.8 * 37.5) / 1.49 = height of building

Calculating the expression on the right side:

(2.8 * 37.5) / 1.49 ≈ 70.7013

Rounding to the nearest meter, the height of the building is approximately 71 meters.

Learn more about heigth building at https://brainly.com/question/7289008

#SPJ11

The time at which the rocket reaches its maximum height is 3.5 seconds. Therefore, b. is the correct answer.

An equation describing the relationship between the input (x) and the output (f(x)) is called the function f(x). Any equation that represents the connection between an input x and an output f is referred to as the function f(x) (x).

A function can be expressed as a graph or table in addition to the standard form of an equation. Functions can be stated using symbols and phrases in addition to equations. A function could be expressed, for instance, as "the square of x" or "f of x equals x squared."

Whatever form a function takes, it's critical to keep in mind that the input (x) always yields the same result (f(x)).

In the given question,

The maximum height of the rocket is achieved at the point when the velocity of the rocket is 112 feet. This can be determined by taking the derivative of the function S(t).

S'(t) = 112

Therefore, when S'(t) = 112, t = 3.5.

This means that the rocket reaches its maximum height at t = 3.5 seconds.

Therefore, the time at which the rocket reaches its maximum height is 3.5 seconds.

To know more about function, visit

brainly.com/question/28049372

#SPJ1

Answer:

Step-by-step explanation:

substitution.

it will be easier to use this method since we are given what x is.

5(-3)+y=8

-15+y=8

y=23

x=-3

Answer:

\(slope = \frac{ - 1 - 4}{0 - 2} \\ = \frac{ - 5}{ - 2} \\ = { \tt{ \frac{5}{2} }}\)

Answer:

\(x=\sqrt{13}\)

Step-by-step explanation:

\(x^{2} - 6 - 7 = 0 \\x^{2} =13\\x=\sqrt{13}\)

Answer:

x = 15

Step-by-step explanation:

Step 1: Define

j(x) = -4/5x + 7

j(x) = -5

Step 2: Substitute and Evaluate

-5 = -4/5x + 7

-12 = -4/5x

x = 15

The equation of the line that passes through the point (5,3) and has a slope of -4/5 is,

⇒ 4x + 5y = 35

Here,

The given point is (5, 3) and slope is -4/5.

We have to find the equation of the line that passes through the point (5,3) and has a slope of -4/5.

What is Equation of line?

The equation of the line that passes through the point (a, b) and has a slope of m is;

⇒y - a = m (x - b)

Now,

The given point is (5, 3) and slope is -4/5.

Hence, The equation of the line that passes through the point (5,3) and has a slope of -4/5 is;

y - 3 = -4/5 (x - 5)

5 (y - 3) = -4 (x - 5)

5y - 15 = -4x + 20

4x + 5y = 20 + 15

4x + 5y = 35

Therefore, The equation of the line that passes through the point (5,3) and has a slope of -4/5 is

⇒ 4x + 5y = 35.

Learn more about the equation of line visit:

https://brainly.com/question/9351428

#SPJ1

When it is required to minimize the effect of a few extreme scores, median is the measure of central tendency which is the most appropriate.

This is due to the fact that the median isn't influenced by extreme values, which means it is the middle value when the observations are ordered from least to greatest.There are several measures of central tendency, including the mode, median, and mean.

The most common measure is the mean, but it is greatly affected by the presence of a few very high or very low scores.To ensure that the mean isn't skewed too much by these scores, the median is a better choice. The median is the middle number in a data set when the observations are sorted from smallest to greatest.

In this way, if there are extremely high or low scores, they are not going to influence the median significantly as compared to the mean. Hence, we can say that the median is the most appropriate measure of central tendency when it is desired to minimize the effect of a few extreme scores.

The measure of central tendency that is most appropriate when it is desired to minimize the effect of a few extreme (very high or very low) scores is the median.

To know more about  mean visit :

brainly.com/question/31101410

#SPJ11

Answer:

A

Step-by-step explanation:

Here, we want to choose the option that best suit the question.

Let’s consider the cases individually;

for (x-6) = 0

we have a root at x = 6 which is a real root

Secondly

x^2 + 8x + 16 = x^2 + 4x + 4x + 16 = 0

That would be;

x(x + 4) + 4(x + 4)

(x + 4)(x + 4) = 0

Thus x = - 4 twice

So the roots of the given equation would be;

6 , -4 , -4

Which is 3 real roots but only 2 real distinct roots

Answer:

correct answer is A

Step-by-step explanation:

VII) (-i)^19 = -i. Option C

VIII) The imaginary part of i/1 + i = 1/2. Option C

IX) The modulus of 3 - 4i is 5. Option C

X) For Z = a + ib, sin θ = a/b. Option A

XI) There are 3 elements in the set. Option A

We know that the imaginary numbers has to do with the numbers that we can be not be able to find on the number line. These are not real numbers but they are very important in the process of computation. There are two parts of a complex number. We have the imaginary part and we have the real part.

It is sometimes possible that we can be able to represent the complex number by the use of an Argand diagram which shows the complex number in the polar form.

Learn more about complex number:https://brainly.com/question/20566728

#SPJ1

Answer:

hey

Step-by-step explanation:

how r u?

wyd?

u from?

u r girl or boy??

Answer:

7.

Step-by-step explanation:

It would take about 23.1 months for the plant population to be 138 plants.

An exponential function is in the form:

y = abˣ

Where y,x are variables, a is the initial value of y and b is the multiplication factor.

Given:

\(P(m)=19.3(1.089)^m\)

Where P is the plant population after m months.

For a population of 138 plants:

\(138=19.3(1.089)^m\\\\m*ln(1..089)=ln(7.15)\\\\m=23.1\)

It would take about 23.1 months for the plant population to be 138 plants.

Find out more on Exponential Function at: https://brainly.com/question/12940982

Answer:

23.1

Step-by-step explanation:

edge

w ≤ 250

This inequality can be used to represent the maximum weight that a stepladder can hold, which is 250 pounds. In other words, the weight, w, must be less than or equal to 250 pounds.

The weight, w, must be less than or equal to 250 pounds. This inequality can be used to represent the maximum weight that a stepladder can hold, which is 250 pounds. In other words, if the weight of the object being placed on the stepladder is greater than 250 pounds, it is not safe to use the stepladder. This inequality helps to ensure the safety of the person using the stepladder, as it limits the amount of weight that can be placed upon it. Furthermore, it also helps to protect the stepladder itself, as it prevents it from being overloaded with too much weight, which could cause it to break or malfunction. In conclusion, the inequality w ≤ 250 represents the maximum weight that a stepladder can safely hold.

Learn more about inequality here

https://brainly.com/question/28823603

#SPJ4

Step-by-step explanation:

The sum of co-interior angle = 180°

Now,

2x + 7x = 180°

9x = 180°

x = 180° ÷ 9

x = 20°

Answer:

x = 20

Step-by-step explanation:

Co-interior angles (also called same-side interior angles) are two angles that are on the same side of the transversal and on the interior of (between) the two parallel lines.

Same-side interior angles theorem:  If two parallel lines are cut by a transversal, then the same side interior angles are supplementary (add up to 180º).

Therefore, if 2x and 7x are co-interior:

⇒ 2x + 7x = 180

⇒ 9x = 180

⇒ x = 20

Answer:

y varies inversely with x is written as

y = k /x

where k is the constant of variation

y = 8 x = 1.55

8 = k / 1.55

Multiply through by 1.55

k = 12.4

The formula is

y = 12.4 / x

when y = - 0.62

- 0.62 = 12.4/x

- 0.62x = 12.4

Divide both sides by - 0.62

x = 12.4/-0.62

x = - 20

When y = - 0.62 x = - 20

Hope this helps

Answer: the full gallon

Step-by-step explanation:

Half gallon = $2.20

full gallon = $3.68

since a half gallon is $2.20, when you buy 2 (to make a full gallon), it costs $4.40

since just buying a full gallon only costs $3.68, it is a better buy*

* if you don’t want a full gallon, however, you would just buy a half gallon. But, I don’t believe that this question is about whether you want a half or full gallon. It’s math.

Answer:

No there is not  enough evidence to support the claim that the mean expenditure for auto insurance is less than the 2002 amount at the α = 0.05 level of significance

Step-by-step explanation:

Sample Mean = μ1 = $806

Sample Mean = μ2 = $ 781

Standard Deviation= S= σ =39.13

n= 32

Confidence Interval = 95 %

α= 0.05

z∝=± 1.96

We state the null and alternative hypotheses as

H0: μ1 = $806  and Ha: μ1 ≠ $806  two sided tail test

z= μ1 -μ2/σ/√n

z= 806-781/ 39.13/√32

z= 806-781/ 39.13/5.6568

z=806-781/ 6.92

z= 25/6.92

z= 3.613

Z> z∝

3.613 > ± 1.96

No there is not  enough evidence to support the claim that the mean expenditure for auto insurance is less than the 2002 amount at the α = 0.05 level of significance