Connie has been collecting all her extra nickels and dimes into a vase this past year. The vase is full, so she decided to count them and see if she has enough money to buy herself a new dress. She was surprised to find that she had 3400 coins worth $290. How many nickels (N) and how many dimes (D) did she have in the vase?

By using a statistical calculator, the actual sample mean and sample standard deviation are:

Actual sample mean = 46.1500.

Actual ample standard deviation = 8.6256.

In Mathematics and Geometry, the sample mean for any set of data can be calculated by using the following formula:

Mean = ∑x/(n - 1)

In Mathematics and Geometry, the sample standard deviation for any set of data can be calculated by using the following formula:

Standard deviation, δx = √(1/N × ∑(x - \(\bar{x}\))²)

By using a statistical calculator, the actual sample mean and sample standard deviation are as follows;

Actual sample mean = 46.1500.

Actual ample standard deviation = 8.6256.

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

Answer:

My answer is 27.48 minutes

Step-by-step explanation: what i did to get this answer is i subtracted my numbers and add so i added $30 + 6 ( don't have to put the dollar sign when you add your numbers together) and i got 36 as my answer and then after i did that i subtracted $27.84 - 36 and got 27.48 as my answer.

hope it helps you

1 From the given information, no determination can be made as to whether the parallelogram is a rhombus, a rectangle, or a square.

2 The reason for the determination made in the previous step is A. From the given information, no determination can be made as to whether the parallelogram is a rhombus, a rectangle, or a square.

The diagonals of a parallelogram bisect each other, but this is true for all parallelograms, regardless of whether they are squares, rectangles, or rhombuses.

Therefore, the given information is not sufficient to determine whether the parallelogram is a rhombus, a rectangle, or a square.

In conclusion, from the given information, no determination can be made as to whether the parallelogram is a rhombus, a rectangle, or a square.

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Answer:

Step-by-step explanation:

At the end of the loan/investment, you can take the accumulated value and subtract that from the principle/PV to get the total interest

The total interest earned can be determined by subtracting the principal from the future value of the loan.

There are two types of interests : simple interest and compound interest.

Compound interest is a type of interest in which the principal and interest already accumulated also earn an interest. While for simple interest it is only the principal that earns interest.

For example, if a loan of $4000 earns 10% interest compounded yearly, the future value of the the amount in 5 years is:

$4000 x (1.1)^5 = 6442.04

The interest earned over the 5 years can be determined by subtracting the  cost of the loan from the future value of the investment

Interest = 6442.04 - $4000 = $2442.04

Another example, if a loan of $4000 earns 10% simple interest, the interest of the loan after 5 years is:

$4000 x 0.1 x 5 = $2000

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Answer:

48 ft

Step-by-step explanation:

this is because the perimeter of the room is its sides so first you 9x2=18

then 14x 2= 28 and then 28 + 18 and you get 48 ft

Answer:

Step-by-step explanation:

Whatever t he number is, it must be divisible by 4 twos and 2 threes. the wording is a bit awkward.

The answer to what number is needed is 16 * 9 = 144

So if I'm reading this correctly, the answer is 149. When you take 5 away, you get 144.

Answer:

I cant draw 4 u sry

Answer:

A. c = 3.5h + 15

Step-by-step explanation:

I can't exactly draw the problem BUT I can still help.

C represents the cost altogether but we do not know how much the total cost would be.

So we're paying $15 as a fee, no more from that.

Next, there's another fee that costs $3.50 per hour but since we wouldn't know how long we would use the kayak, hours would represent h.

Now, c = 3.5h + 15.

(In other words, the cost to rent a kayak would be $3.5 PLUS the additonal 15 one time cost.)

The parameters that are needed to calculate a probability are listed as follows:

Then the probability is calculated as the division of the number of desired outcomes by the number of total outcomes, hence it is the same as a relative frequency.

The total number of periods is given as follows:

5 + 6 + 4 = 15.

The frequency of each class is given as follows:

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The expression 8 + 7 x 6 - 7 + 8 x 10 evaluates to 123

An equation is a mathematical statement showing the equivalence of two mathematical expression. Example -

3x + 5 = 8

Given is -

8 + 7 x 6 - 7 + 8 x 10

We have -

8 + 7 x 6 - 7 + 8 x 10

8 + 42 - 7 + 80

50 + 73

123

Therefore, the expression 8 + 7 x 6 - 7 + 8 x 10 evaluates to 123.

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Answer:

Step-by-step explanation:

A

For the considered case, the weight 6 pound 1 ounce will be taken as : Option C: Lower quartile.

When we get data which can be compared relatively with each other, for finding quartiles, we arrange them in ascending or descending order.

Quartiles are then selected as 3 points such that they create four groups in the data, each groups approximately possessing 25% of the data.

Lower quartile, also called first quartile has approx 25% in its left partition, and on its right lies approx 75% of the data.

Similarly, second quartile (also called median) is approximately in mid of the data.

Third quartile (also called upper quartile)  has approx 75% in its left partition, and on its right lies approx 25% of the data.

Left to right is said in assumption that data was arranged increasingly from left to right

For this case, it is said that 25% of the class weighted less than 6 pounds 1 ounce. That means it is first quartile or say lower quartile.

Thus, for the considered case, the weight 6 pound 1 ounce will be taken as : Option C: Lower quartile.

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Answer:

135.4

Step-by-step explanation:

800 - 664.6 = 135.4

Answer:

Answer: 3 + 7 + 12 - 2 = 20

Step-by-step explanation:

Answer:

150-3x

Step-by-step explanation:

Use distrubitive property:

180-6x +3x-30

Factor:

150-3x

Answer:

-3x+150

Step-by-step explanation:

6(30-x)+3(x-10)

6(30)+6(-x)+3(x)+3(-10)

180-6x+3x-30

180-3x-30

-3x+150

hopes this helps please mark brainliest

There are 125 stickers did Sally have to start.

We have to given that,

Sally had 52 more stickers than Joe after Joe gave 1/5 of his stickers to her.

Let us assume that,

Joe had x stickers to start with.

Since, After Joe gave 1/5 of his stickers to her.

He have 4/5 of his original amount left.

That is, 4/5x

Since, Sally had 52 more stickers than Joe

Hence, We get;

4/5x + 52 = 1/5x + y  .. (i)

where y is the number of stickers Sally had to start with.

Here, they both had a total of 260 stickers,

Hence,

x + y =260  .. (ii)

From (i) and (ii);

y = 125

Thus, There are 125 stickers did Sally have to start.

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The original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size."

a. To find the probability that a randomly selected female has a pulse rate less than 80 beats per minute, we need to standardize the value using the formula z = (x - μ) / σ, where x is the pulse rate we are interested in, μ is the mean pulse rate, and σ is the standard deviation. Thus, we have:

z = (80 - 76) / 12.5 = 0.32

Using a standard normal distribution table or a calculator, we can find that the probability of a z-score less than 0.32 is approximately 0.6255. Therefore, the probability that a randomly selected female has a pulse rate less than 80 beats per minute is:

P(z < 0.32) = 0.6255

b. Since we are dealing with a sample size of 25 females, we can use the central limit theorem, which states that the distribution of sample means will be approximately normal with a mean of μ and a standard deviation of σ / sqrt(n), where n is the sample size.

In this case, we have:

μ = 76.0

σ = 12.5

n = 25

Therefore, the standard deviation of the distribution of sample means is:

σ / sqrt(n) = 12.5 / sqrt(25) = 2.5

To find the probability that 25 randomly selected females have a mean pulse rate less than 80 beats per minute, we need to standardize the value using the formula z = (X- μ) / (σ / sqrt(n)), where X is the sample mean.

Thus, we have:

z = (80 - 76) / (2.5) = 1.6

Using a standard normal distribution table or a calculator, we can find that the probability of a z-score less than 1.6 is approximately 0.9452. Therefore, the probability that 25 randomly selected females have a mean pulse rate less than 80 beats per minute is:

P(z < 1.6) = 0.9452

c. The normal distribution can be used in part (b) because we are dealing with the distribution of sample means, not individual pulse rates. The central limit theorem states that the distribution of sample means will be approximately normal regardless of the sample size, as long as the sample size is sufficiently large (typically, n ≥ 30). In this case, we have a sample size of 25, which is smaller than 30, but we can still use the normal distribution approximation because the population distribution is assumed to be normal.

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The segment OB' has a length of 3 units

From the question, we have the following parameters that can be used in our computation:

Scale factor = 4

Length of segment OB = 3/4

The above means that:

Length of segment OB' = Length of segment OB * Scale factor

Substitute the known values in the above equation

So, we have the following dilation equation

Length of segment OB' = 3/4 * 4

Evaluate

Length of segment OB' = 3

Hence, the length of OB' is 3 units

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Answer: 20

Step-by-step explanation:

Multiply 2.4*10-4

Calculate 24-4

the answer is (12x^10000)/5

Answer:

A. 4

B. 1/4

C. -1/4

Step-by-step explanation:

The slope of each of these lines could be found by counting the rise over run. This means that you can count the change in y and divide it by the change in x. For example, the first line increase 4y and 1x. So, the slope is 4/1 or just 4.

However, there is another way to find the answer. If you understand the way slope affects a line, then you don't need to count the lines. Slopes that are greater than 1, like 4, will make a line steeper. The first graph has the steepest line; therefore, it must have a slope of 4. Fraction slopes will make the line less steep. The second 2 graphs are less steep, so they must be fractions. Finally, negative slopes will go in the opposite direction. The y-value will decrease as you go to the right instead of increasing like a positive slope. Therefore, graph 3 must have a slope of -1/4.

Answer:

1.64×10⁷ km

Step-by-step explanation:

We know this is a triangle rectangle, so we apply the Pythagorean Theorem

QR=sqrt(PR²+PQ²)

Solving it, we will encounter in

sqrt(2.56×10¹⁴+1.296×10¹³)

to solve it, we need to bring the two numbers at the same power of ten, so we move 1.296 of one place to the left:

sqrt(2.56×10¹⁴+0.1296×10¹⁴)

we can now add the two numbers:

sqrt(2.6896×10¹⁴)

to solve this, we do the square root of 2.6896 and divide 14 by two (the index of the root is 2, so for roots' properties we can divide 14 by 2 - the index)

which gives us

1.64×10⁷

Answer:

12 / 5 gallons

Step-by-step explanation:

Answer:

34500

Step-by-step explanation:

37000 - 12(1000) = 25000

25000 + 9500 = 34500

Answer:

Step-by-step explanation:

First expression

54+11 =65

second expression

7x+13x= 20x

Third expression

(7x+54)+(13x+11)

7x+54+13x+11    

(7x+13x)+(54+11)      

20x+65

Fourth expression

In your own opinion, how does the problem in the middle relate to the problems on the side?

from the above first two expression

first value of each expression was combined to make 7x+54

second value of each expression was combined to make 13x+11

1,000,000

2,500,000x0.4 (40 as a decimal) = 1,000,000

number of blue toy car = 5

number of red toy car = 2

number of yellow toy car = 3

Total toy car = 10

She randomly choose 1 toy car from the box . The probability that she will choose a red toy car is

Answer:

3x²+\(\frac{7}{2}\)x+1

Step-by-step explanation:

gh

(3x+2)(x+(\(\frac{1}{2}\)))

3x²+2x+\(\frac{3}{2}\)x+1

3x²+\(\frac{7}{2}\)x+1

Answer:

it will be -12 F

Step-by-step explanation:

IT is already -2 F so if you add -2 + -10= -12