if mary had 23 apples and she give 10 to her fren. how many apples do she have left?

Answer:

above sea level

Step-by-step explanation:

The percentage of these funds are expected to be within ±6 standard deviations of the mean is 97.22% (approx).Hence, the required answer is 97.22.

The Chebyshev’s theorem is used to determine the percentage of observations that lie within a certain number of standard deviations of the mean in a set of data.

According to the Chebyshev rule, what percentage of these funds are expected to be within ±6 standard deviations of the mean can be calculated using the formula:

\($$1 - \frac{1}{k^2}$$\)

Where k is the number of standard deviations. For the question, the mean is 7.10 and standard deviation is 3.50.As per the given data, we can find that, the number of standard deviation from the mean is ±6.

Thus, k = 6.

The percentage of these funds are expected to be within ±6 standard deviations of the mean is:

\($$1 - \frac{1}{k^2} = 1 - \frac{1}{6^2} = 1 - \frac{1}{36} = 0.9722$$\)

Therefore, the percentage of these funds are expected to be within ±6 standard deviations of the mean is 97.22% (approx).

Hence, the required answer is 97.22.

For more such questions on percentage , Visit:

https://brainly.com/question/30744872

#SPJ8

Answer:

x = - 6 , x = 4

Step-by-step explanation:

the absolute value function always gives a positive value but the expression inside can be positive or negative , that is

2x + 2 = 10 or - (2x + 2) = 10

solving both

2x + 2 = 10 ( subtract 2 from both sides )

2x = 8 ( divide both sides by 2 )

x = 4

or

- (2x + 2) = 10

- 2x - 2 = 10 ( add 2 to both sides )

- 2x = 12 ( divide both sides by - 2 )

x = - 6

Answer:

\(5n+\frac{2}{5n^2} +4\)

Step-by-step explanation:

Simplify the expression

Answer:

7cm

.

Step-by-step explanation:

Area = Length (L) * width (W)

L = 3 + w

Area = 70cm²

70 = (3 + w) * w

70 = 3w + w²

w² + 3w - 70 = 0

w² + 10w - 7w - 70 = 0

w(w + 10) - 7(w + 10) = 0

w + 10 = 0

w - 7 = 0

w = - 10 or w = 7

Widyh cannot be negative

Hence, width = 7

Answer:

angle 4

its on the outside and it is alternate

Answer:

d

Step-by-step explanation:

Answer:

it is 5

Step-by-step explanation:

Answer:

x = 3

Step-by-step explanation:

1.

\(2\cdot \left(4x-3\right)-8=4+2x\\2\cdot 4x+2\cdot -3-8=4+2x\\8x-6-8=4+2x\\8x-14=4+2x\)

2.

\(8x-14=4+2x\\8x-14-2x=4+2~x-2x\\8x-2x-14=4+2x-2x\\6x-14=4+2x-2x\\6x-14=2x-2x+4\\6x-14=4\)

3.

\(6x-14=4\\6x-14+14=4+14\\6x=4+14\\6x=18\)

4.

\(6x=18\\\frac{6x}{6}=\frac{18}{6}\\x=\frac{18}{6}\\\\\)

\(x=\frac{3\cdot 6}{1\cdot 6}\\\\Factor\\x=3\)

Answer:

Step-by-step explanation:

To solve this problem, we need to find the Greatest Common Factor (GCF) which is the greater factor possible in common for all three numbers 5000, 2500 and 245 liters.

5,000 | 2

2,500 | 2

1,250  | 2

625    | 5

125     | 5

25      | 5

5        | 5

1

So, \(5,000 = 2 \times 2 \times 2 \times 5 \times 5 \times 5 \times 5\), \(2,500 = 2 \times 2 \times 5 \times 5 \times 5 \times 5\)

245 | 5

49   | 7

7     | 7

1

\(245 = 5 \times 7 \times 7\)

As you can observe, the greatest common factor is 5, because it's the greater number in common for all three numbers.

Therefore, the greatest recipient possible must be 5 liters capacity.

1.a The probability of throwing at most 2 heads in 5 throws is more probable.

1.b A total of 2^4 = 16 outcomes.

1.c The probability of selecting a black ball, a red ball, and then another black ball is 5/56.

1a. Probability of throwing exactly 15 heads in 20 throws

Probability of getting a head is p = 0.65, and the probability of getting tails is q = 1 - 0.65 = 0.35.

Let X be the random variable which counts the number of heads in 20 throws.

Then X follows the binomial distribution B(20, 0.65).P(X = 15) = 20C15 * 0.65^15 * 0.35^5= 0.16

Probability of throwing at most 2 heads in 5 throws

Let Y be the random variable which counts the number of heads in 5 throws.

Then Y follows the binomial distribution B(5, 0.65).P(Y ≤ 2) = P(Y = 0) + P(Y = 1) + P(Y = 2)

                                                                                                  = 0.01 + 0.08 + 0.25

                                                                                                  = 0.34

Therefore, the probability of throwing at most 2 heads in 5 throws is more probable.

1b. Suppose we flip a fair coin 4 times.

For what combination(s) do there exist exactly 3 permutations?

There are a total of 2^4 = 16 outcomes.

The combinations that exist in exactly 3 permutations are HTTH, HTHT, THHT, THTH, and HHTT.

1c. Probability of selecting a black ball, a red ball, and then another black ball We want to compute the probability of pulling out 3 balls, without replacement, from a box with 5 red balls and 3 black balls.

The total number of ways of pulling out 3 balls is 8C3.

The probability of pulling out a black ball on the first draw is 3/8.

The probability of pulling out a red ball on the second draw is 5/7.

The probability of pulling out another black ball on the third draw is 2/6 = 1/3.

So, the required probability is (3/8) * (5/7) * (1/3) = 5/56.

Therefore, the probability of selecting a black ball, a red ball, and then another black ball is 5/56.

Learn more about probability from this link:

https://brainly.com/question/13604758

#SPJ11

Answer: A?

Step-by-step explanation:

Answer:2^3

Step-by-step explanation:

Answer:x=7/5

Step-by-step explanation:

Answer:

x= \(\frac{7}{\\5}\)

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

4x−5=2−x

4x+−5=2+−x

4x−5=−x+2

Step 2: Add x to both sides.

4x−5+x=−x+2+x

5x−5=2

Step 3: Add 5 to both sides.

5x−5+5=2+5

5x=7

Step 4: Divide both sides by 5.

\(\frac{5x}{5}\)  = \(\frac{7}{5}\)

Answer:

60 percent

Step-by-step explanation

Because 40 percent of girls will be there. The remaining 60 percent is boys,40 percent won’t come so 60 minus 40 is 20 percent and 40 plus 20 is 60 percent

In a class 40% of the students are girls and the rest are boys. If all the girls attended school but 40% of the boys stayed away what percent of the class was present in class.

(There are two methods to do this sum)

Since we have already been told that there are 40% girls, that means there are 60% boys (100–40).

The answer therefore will be 60% of 40, which is (60/100) × 40 = 24 boys.

The only difference is that we find out how many girls. Once we have the numbers of girls, we can then subtract the girls from the total number of students to get the number of boys.

Numbet of girls = (40/100)×40 = 16 girls

40–16 = 24 boys

Answer:

there aren't any options. but quadrant four would have a (x,-y) set up. positive x-values, but negative y-values.

the Answer is: (2,1)

Step-by-step explanation:

Answer:

true or false

Step-by-step explanation:

Receiving a customer who has an appointment is a routine query

Answer:

120.8 degrees

Step-by-step explanation:

Given statement solution is :- To construct a grouped frequency distribution for the given test scores data, we will use the provided classes: 30-40, 40-50, and so on. Here's the grouped frequency distribution:

Classes Frequency

30-40 2

40-50 3

50-60 4

60-70 8

70-80 9

80-90 7

90-100 7

To construct a grouped frequency distribution for the given test scores data, we will use the provided classes: 30-40, 40-50, and so on. Here's the grouped frequency distribution:

Classes Frequency

30-40 2

40-50 3

50-60 4

60-70 8

70-80 9

80-90 7

90-100 7

To create this distribution, we count the number of scores that fall within each class range. For example, the class 30-40 has 2 scores falling within that range (35 and 39), and the class 40-50 has 3 scores (45, 48, and 48).

Note: It seems there is an inconsistency in the data provided. The class range 70-80 has 9 scores, but the frequencies given for the other classes do not match the actual number of scores falling within those ranges. Therefore, I have used the actual counts from the data to construct the grouped frequency distribution.

For such more questions on Grouped Frequency Distribution

https://brainly.com/question/29115601

#SPJ8

The correct option is A. The formula for the mean absolute deviation over a range of forecasted values is  MAD t 1 t 1.

Forecasting is the method of creating predictions primarily based on past and gift information. Later these can be compared (resolved) against what occurs. for example, a company would possibly estimate their sales in the next yr, then examine it in opposition to the real results. Prediction is similar, but the more preferred time period. Forecasting would possibly confer with particular formal statistical methods using time series, pass-sectional or longitudinal information, or as an alternative to less formal judgmental strategies or the manner of prediction and resolution itself. utilization can range among regions of application:  

for example, in hydrology, the phrases "forecast" and "forecasting" are sometimes reserved for estimates of values at sure unique future instances, at the same time as the term "prediction" is used for extra widespread estimates, consisting of the wide variety of times floods will arise over an extended duration.

chance and uncertainty are vital to forecasting and prediction; it's miles generally taken into consideration as an excellent practice to indicate the diploma of uncertainty attached to forecasts. in any case, the information ought to be updated in order for the forecast to be as accurate as possible. In a few instances, the information used to are expecting the variable of the hobby is itself forecast

To learn more about Forecasting visit here:

brainly.com/question/28839529  

#SPJ4

The probability of selecting a football card and then a basketball card is 0.16 or 16%. The probability of selecting a football card and then a basketball card can be calculated by multiplying the probability of selecting a football card on the first draw and the probability of selecting a basketball card on the second draw.

Since the first card is replaced before the second draw, the probability of selecting a football card or a basketball card remains the same on both draws.

The probability of selecting a football card on the first draw is 2/10, or 0.2, since there are 2 football cards in a total of 10 cards in the bag. The probability of selecting a basketball card on the second draw is 8/10, or 0.8, since there are 8 basketball cards left after the first draw.

Therefore, the probability of selecting a football card and then a basketball card can be calculated as follows:

P(Football and Basketball) = P(Football on 1st draw) x P(Basketball on 2nd draw)

= (2/10) x (8/10)

= 0.16

So, the probability of selecting a football card and then a basketball card is 0.16 or 16%.

To know more about probability-

brainly.com/question/30034780

#SPJ4

Interactions involving dummy variables can provide insights into the different effects of independent variables across categories.

1. Dummy variables are binary variables that represent categorical variables in a regression analysis. When interactions are included between dummy variables and other independent variables, it allows for differential effects of the independent variables based on the different levels of the categorical variable.

For example, let's consider a regression model to predict income based on education level and gender. We can include an interaction term between education level (represented by dummy variables for different levels) and gender. This interaction term allows us to examine whether the effect of education level on income differs between males and females. It helps capture any gender-specific differences in the relationship between education and income.

1.2 The linear probability model (LPM) is a common approach to estimate the probability of an event occurring using a linear regression framework. However, it has several problems:

1. The predicted probabilities from the LPM can fall outside the [0, 1] range: Since the LPM does not impose any restrictions on the predicted probabilities, they can sometimes exceed the valid probability range. This violates the assumption of probabilities being bounded between 0 and 1.

2. Heteroscedasticity: The LPM assumes constant error variance across the range of the predictors. However, in practice, the variability of the error term may change with different levels of the predictors, resulting in heteroscedasticity. This violates the assumption of homoscedasticity.

3. Non-linearity: The LPM assumes a linear relationship between the predictors and the probability of the event. However, this may not always be the case, and using a linear model can result in misspecification.

To remedy these problems, an alternative to the LPM is to use logistic regression or probit regression models. These models explicitly model the probability of an event occurring and address the issues mentioned above. They provide predicted probabilities that fall within the valid range of 0 to 1, account for heteroscedasticity, and allow for non-linear relationships between the predictors and the probability of the event.

Learn more about LPM here:

https://brainly.com/question/30890632

#SPJ4

Answer:

179

Step-by-step explanation:

180- 2=189 this is because 2 of the students the 180 received a or b

The given question is incorrect. The correct question is:

Of the 180 students in a college course, 1/4 of the students earned an A for the course, 1/3 of the students earned a B for the course, and the rest of the students earned a C for the course. How many of the students earned a C for the course?

A. 75

B. 90

C. 105

D. 120

E. 135

The number of students who earned a C for the course can be represented by the fraction of 5/12 of the total number of students and is equal to 75. Hence, option A is the right choice.

A fraction in general means a part of. We represent a part of the whole using fractions. The total number of parts is taken as the denominator, while the parts used are taken as the numerator.

Fraction = Numerator/Denominator.

We are given that there are 180 students in a college course. 1/4 of them get an A for the course while 1/3 get a B. Rest of the students to get a C for the course.

We need to find the number of students who get a C.

Let the fraction of students getting a C be x.

We know that a whole fraction is always = 1.

∴ Fraction of students getting an A + Fraction of students getting a B + Fraction of students getting a C = Whole fraction.

or, 1/4 + 1/3 + x = 1

or, x = 1 - 1/4 - 1/3 = (12 - 3 - 4)/12 = 5/12

∴ 5/12 of the students get a C for the course.

Number of Students who get a C for the course = 5/12 of 180 = 5*15 = 75.

∴ The number of students who earned a C for the course can be represented by the fraction of 5/12 of the total number of students and is equal to 75. Hence, option A is the right choice.

Learn more about the fractions at

brainly.com/question/11562149

#SPJ2

If Jina used three times as many pounds of Type B coffee as Type A, then the amount of Type A coffee used is 27 pounds.

Let the number of pounds of type A coffee used in the blend be denoted by "x",

The shop used 3times as many pounds of type-B coffee,

So, the number of pounds of type B coffee used in the blend is = 3x.

The total cost of the blend is given as $503.55, and

We know that the cost of "type A" coffee is $5.75 per pound, and the cost of "type B" coffee is $4.3 per pound.

So, we can write the following equation,

⇒ 5.75x + 4.3(3x) = 503.55

Simplifying and solving for x, we get:

⇒ 5.75x + 12.9x = 503.55

⇒ 18.65x = 503.55

⇒ x = 27

Therefore, Jina used 27 pounds of type A coffee in the blend.

Learn more about Pounds here

https://brainly.com/question/28013858

#SPJ4

Answer:36cm

Step-by-step explanation:

Answer:

The percent decrease is 70%.

Step-by-step explanation:

Answer:

70%

Step-by-step explanation:

Answer:

e

Step-by-step explanation:

2x + 4 = 8

2x = 8 - 4

2x = 4

divide both sides by 2

x = 2 ( x is less than or equal to 2 )

The line is supposed to be like this X<-----------------------•2

Answer:

why is it just dots?that's a bit weeid

The protractor can be used to obtain the angle of a table.

Place the protractor so that one of its straight edges coincides with a table edge. Make sure the protractor's center point is directly above the vertex (corner) of the desired angle.

Make that the protractor's baseline, which is typically denoted by a zero or 180 degrees, is parallel to the edge of the table. This step is essential for measuring angles accurately.

Locate the degree markings on the protractor's scale. Find the degree at which the scale intersects with the other edge of the table. The angle that the two table edges make is represented by this number.

Learn more about angle:https://brainly.com/question/31818999

#SPJ1

Answer:

(2-a)^2

(2+a) (2-a)...

Answer:

Step-by-step explanation:

Use the identity:  a² - b² = (a+ b)(a - b)

4 - a² = 2² - a²        {Here a = 2 and b = a}

        = (2 +a) (2 - a)