A grocer sells 40 liter of oil for the cost price of 42 liter, find his gain percent.

​

Answer:2 km

Step-by-step explanation:

Based on the facts provided, her evening walk is two and a half times. Her evening walk will thus cover (2.5 * m) kilometres.

Sierra takes her dog for two daily walks 7 days a week.

By adding the distances of the morning and evening walks for each day, one may determine the total distance travelled in a week:

The total distance equals the sum of your morning and evening walks times the number of days.

With the provided numbers replaced, we get: 49 = (m + 2.5m) * 7 here we assumed m as 1m

Simply put, 49 = 3.5m * 7 

49 = 24.5m.

Divide both sides of the equation by 24.5 to find the value of m: m = 49 / 24.5 m = 2

Therefore, the morning walk is 2 kilometres long.

The total number of 5- digit even palindromes present is 400 numbers.

For the stated question-

For example, 23432, 85658,

The number of 5- digit even palindromes are formed as;

4 * 10 * 10 = 400.

Thus, the total number of 5- digit even palindromes present is 400 numbers.

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Step-by-step explanation:

15+10z=105

10z=105-15

10z=90

z=9

Step-by-step explanation:

We have given an equation −2x − 13 = 8x + 7

We need to find the operations that is used to find the value of x. It can be done by the following ways.

Subtract 8x on both the sides of the equation

−2x − 13 -8x= 8x + 7 -8x

-10x-13 = 7

Add 13 on both the sides of the equation,

-10x-13+13 = 7+13

-10x=21

Divide by -10 on both sides

\(x=\dfrac{-20}{10}\\\\x=-2\)

Hence, the correct option is "Subtract 8x, then add 13, lastly divide by −10"

Answer:

exact form:  n=-53/37

Step-by-step explanation:

isolate the variable by dividing each side by factors that don't contain the variable.

The properties used:

a) Distributive Property.

b) Combining Like Terms.

c) Division Property of Equality.

Given is an equation 3n-5 = 8(6+5n), we need to solve it by using Property of Equality.

Let's solve the equation step by step:

3n - 5 = -8(6 + 5n)

First, we will distribute the -8 to the terms inside the parentheses:

3n - 5 = -48 - 40n

Next, we can simplify the equation by combining like terms:

3n + 40n = -48 + 5

43n = -43

Now, to isolate n, we will divide both sides of the equation by 43:

(43n)/43 = (-43)/43

n = -1

The solution to the equation is n = -1.

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Answer:

Monday:

Cups of Sugar: 3

Tablespoon of Butter: 30

No. of Bananas: 75

Wednesday

Cups of Sugar: 1.12

Tablespoons of Butter: 11.2

No. of Bananas: 28

It is impossible for a triangle to have more than one right angle. If a triangle had two right angles, then the sum of these angles would be 180 degrees.

Let ABC be a triangle with two right angles, say at A and B. Then, we have:

Adding these two angles, we get:

But the sum of the angles of a triangle is 180°. Therefore, the third angle, ∠C, must be 0°, which is impossible. Hence, a triangle cannot have two right angles.

However, the sum of the angles of a triangle is always 180 degrees, so the third angle would have to be 0 degrees. This is impossible, as all angles of a triangle must be greater than 0 degrees. Therefore, a triangle can have at most one right angle.

In particular, there can be no triangle with three 90-degree angles (tri square), since such a triangle would have more than one right angle.

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David's hypothesis is directional because he expects the new running shoes to improve his speed. He believes that wearing the new shoes will result in faster running times compared to the old shoes.

A directional hypothesis, also known as a one-tailed hypothesis, specifies the direction of the expected effect or difference. In David's case, his hypothesis would be something like: "Wearing the new running shoes will significantly improve my running speed when compared to running in the old shoes."

By stating that the new shoes will improve his speed, David is indicating a specific direction for the expected effect. He believes that the new shoes will have a positive impact on his running performance, leading to faster times when running a mile. Therefore, the hypothesis is directional.

On the other hand, a non-directional hypothesis, also known as a two-tailed hypothesis, does not specify the direction of the expected effect. It simply predicts that there will be a difference or an effect between the two conditions being compared. For example, a non-directional hypothesis for David's situation could be: "There will be a difference in running speed between wearing the new running shoes and the old shoes."

In summary, since David's hypothesis specifically states that the new shoes will improve his speed, it indicates a directional hypothesis.

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Answer:

A.

How many tiles will you put in each row? 9

How many rows will you make? 3

B.

9x3=27

C.

9 models the amount of tiles in each row

3 models the amount of rows

27 models the total number of chairs/tiles

Step-by-step explanation:

The equation that describe the circle of radius 3 centered at (9, 2, 1) that is parallel to the x y-plane is (x - 9)² + (y - 2)² = 9.

We know that the given coordinates correspond to a sphere.

The x, y coordinates for our search for a circle parallel to the x-y plane are (x, y) = (9, 2)

The circle's standard equation is (x - h)²+ (y - k)² = r², where h and k are the circle's x and y coordinates, respectively, and r is its radius.

So, we have:

h = 9 ;

k = 2 ;

r = 3;

the solution is (x - 9)² + (y - 2)² = 9.

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Answer:

I'm just trying to make this as simple as possible for you.

The value of m is 5.

How?

We must follow a few simple methods to solve this problem.

Well, four to be precise.

All we need to do is add 4 to both sides of the equation, or \(-5m - 4 + 4=36+4\)

Then, we simply by adding the numbers together to get -5m = 36 + 4, or, 40.

Following that, we divide both sides of the equation by the same term, giving us the equation −

5 = 4

0 -5m=40

−5m=40 − 5 − 5 = 4 0 − 5 The -5's go under the numbers like a fraction.

Then, we cancel the terms that are in both the numerator and denominator.

−

5

−

5

=

4

0

−

5

=

4

0

−

5

Fractions same as last part.

Finally, we divide.

=

4

0

−

5

m={\color{#c92786}{\frac{40}{-5}}}

m=40​ - 5

= − 8

Please mark me brainliest if this had helped!

Sincerely, didntask

From the given Alex and Joey  hats equation we got Alex has 24 hats Joey has 11 hats.

Given that,

Joey only has 2 times more hats than Alex, who has 2 more. The difference between the amount of hats Alex has and the 5 that Joey has is also 4 times the number of hats Alex has.

We have to discover how many hats each one of them has.

Let Alex has x hats Joey has y hats.

From the given

We get

x=2y+2 ------> equation (1)

x=4(y-5) --------> equation (2)

Equating equation (1) and equation (2)

2y+2=4(y-5)

2y+2=4y-20

2y-4y=-20-2

-2y=-22

y=-22/-2

y=11

Take y=11 in equation (1)

x=2(11)+2

x=22+2

x=24

Therefore,  Alex has 24 hats Joey has 11 hats.

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There is enough proof to indicate that the percentage of newsletter readers who possess a Rolls Royce is less than 69%.

The null hypothesis is that p = 0.69, meaning that 69% of the newsletter readers own a Rolls Royce. The alternative hypothesis is that p < 0.69, meaning that less than 69% of the newsletter readers own a Rolls Royce.

We can use a one-tailed z-test to test the hypothesis. Assuming a sample size of n = 100, if we observe fewer than 69 Rolls Royces in our sample, we can reject the null hypothesis.

Using a z-test, we can calculate the z-score by using the formula:

z = (p' - p) / sqrt(p * (1 - p) / n)

where p' is the sample proportion, p is the hypothesized proportion, and n is the sample size.

At a significance level of 0.10, the critical z-value is -1.28. If the calculated z-score is less than -1.28, we can reject the null hypothesis.

If we conduct a survey of 100 newsletter readers and find that 58 of them own a Rolls Royce, the sample proportion would be p' = 0.58. Calculating the z-score, we get:

z = (0.58 - 0.69) / sqrt(0.69 * 0.31 / 100) = -1.83

Since -1.83 is less than -1.28, we can reject the null hypothesis and conclude that there is sufficient evidence to suggest that fewer than 69% of the newsletter readers own a Rolls Royce.

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Answer:

z<24

Step-by-step explanation:

It can't be more than one value. All you do is subtract 35 from both sides to isolate z.

Hope this helped!

Answer:

Tamara is correct here. With the expression: 35 + z < 59, Some examples could be; 10,20,15,21,22,23,24, or really anything under the number 24 will be acceptable for this expression to be true.

Step-by-step explanation:

Hope that this helps! :)

Answer:

i think c ..............

The probability of completing the final examination in one hour or less, given a normal distribution with a mean of 79 minutes and a standard deviation of 8 minutes, is approximately 0.8413.

To find the probability of completing the exam in one hour or less, we need to convert one hour (60 minutes) into z-scores. The formula for calculating the z-score is (x - μ) / σ, where x is the value we want to convert, μ is the mean, and σ is the standard deviation.

In this case, we want to find the z-score for 60 minutes. Substituting the values into the formula, we have (60 - 79) / 8 = -2.375.

Next, we need to find the probability associated with this z-score. We can look up the corresponding probability from a standard normal distribution table or use a calculator. The probability corresponding to a z-score of -2.375 is approximately 0.0087.

However, we are interested in the probability of completing the exam in one hour or less, which includes all values less than or equal to 60 minutes. Since we are dealing with a continuous distribution, we need to consider the area under the curve up to the z-score of -2.375. This area represents the probability of completing the exam in one hour or less.

Looking up the z-score of -2.375 in the standard normal distribution table, we find that the corresponding probability is approximately 0.0087. Therefore, the probability of completing the exam in one hour or less is approximately 0.0087 or 0.8413 (rounded to four decimal places).

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Answer:

She will lose 24 pounds.

Step-by-step explanation: She loses 4 pounds each month. She does this for 6 months. So, you would do 4 x 6 = 24. Hope this helps ^-^.

Answer:

13 in.

Step-by-step explanation:

perimeter of triangle = 3 1/3+5 1/2 + 4 1/6

=10/3+11/2+25/6

=20/6+33/6+25/6

=(20+33+25)/6

=78/6

=13 inch.

This declaration is True.

The anticipated variability or widespread deviation of the means from MANY unique random samples is known Sampling distribution.

The standard deviation of this distribution, i.e. the standard deviation of sample means, is called the standard error. The standard error tells you how accurate the mean of any given sample from that population is likely to be compared to the true population mean.

What is the suggest variance and fashionable deviation of the sampling distribution of the pattern mean?

Since the suggest is 1/N times the sum, the variance of the sampling distribution of the suggest would be 1/N2 instances the variance of the sum, which equals σ2/N. The widespread error of the suggest is the standard deviation of the sampling distribution of the mean.

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The given question is incomplete, complete question is:

The expected variability or standard deviation of the means from MANY different random samples is known as what quantity: a. Sampling variability b. Standard error (panel 51 from slides), itâs also said in the video c. Sampling distribution d. Parameter

Answer:

3/2

Step-by-step explanation:

Answer:

I’m sorry I can’t really see it but I think it’s 7 20

Step-by-step explanation:

Answer:

\(x=67.38^\circ\)

Step-by-step explanation:

Use trigonometry

Recall that cos(x)=adjacent side/hypotenuse

You can remember this with SohCahToa

Also remember that if cos(x)=y then \(cos^{-1}(y)=x\)

In this case, we know the adjacent side and hypotonous

Adjacent side=5000

Hypotenuse=13000

Therefore

\(Cos(x)=\frac{5000}{13000}=\frac{5}{13}\)

Now to solve for x, take the inverse cosine

\(cos^{-1}(\frac{5}{13})=x=67.38^\circ\)

Answer:

x=67.38

Step-by-step explanation:

I took the quiz and got it correct!

Answer:

there is no picture nor description, so I'd say it's point Q mainly bc the alphabetical numerals

Answer:

q

Step-by-step explanation:

p-value < 0.0001, reject null hypothesis. Proportion of supporters for issue 1 is significantly different from the majority.

To find the p-an incentive for this present circumstance, we really want to direct a speculation test. We should expect the invalid speculation is that the extent of allies for issue 1 is equivalent to the larger part, and the elective theory is that the extent of allies is not the same as the larger part.

Utilizing a two-followed z-test with an importance level of 0.05, we can work out the z-measurement as:

z = (210/400 - 0.5)/sqrt(0.5 * 0.5/400) = 4.14

The p-an incentive for this test is the likelihood of getting a z-score more noteworthy than 4.14 or not exactly - 4.14, which is tiny (under 0.0001). In this way, we can dismiss the invalid speculation and presume that there is sufficient proof to propose that the extent of allies for issue 1 is altogether not quite the same as the larger part.

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Answer:

B) (-8, -6, 1)

There are a lot of steps and I don't want to spend the time writing it all out... sorry. :')

Hope this helps :)

Answer:

I=12

Step-by-step explanation:

y=108

I=108/9

I=12

Answer:

Step-by-step explanation:

This is the proportional relationship

Let the equation be:

We have:

The required equation is:

Answer:

[See Below]

Step-by-step explanation:

____________________________

✦ Subtract to get how much money she spent:

____________________________

✦ Divide:

____________________________

So each ride was $\(\bold4\).

~Hope this helps Mate. If you need anything feel free to message me.