3 Chiang Heng went to a store with $235. A water bottle cost $33, a keyboard cost $34 and a dictionary cost $35. Chiang Heng spent all of his money to buy seven items. How many of each item did he buy?​

So, 1−x represents the percent of original price being paid as we know that if percentage is given in decimal form, then to get the percent of original.

The decimal number framework has 10 digits which range from 0 to 9 with the base 10 and transformation from paired to decimal can assist us with better figuring out the compound parallel numbers. The decimal numeral framework is the standard framework for meaning number and non-whole number numbers. It is the augmentation to non-whole number quantities of the Hindu-Arabic numeral framework. The approach to meaning numbers in the decimal framework is frequently alluded to as decimal documentation. Numerous numeral frameworks of antiquated civilizations utilize ten and its powers for addressing numbers, perhaps on the grounds that there are ten fingers on all fours began counting by utilizing their fingers. Models are first and foremost the Egyptian numerals, then the Brahmi numerals, Greek numerals, Hebrew numerals, Roman numerals, and Chinese numerals.

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Answer:

0.75

Step-by-step explanation:

Given :

mean = 42000

Standard deviation = 24000

score, x = 60000

The Zscore :

Zscore = (score - mean) / standard deviation

(60000 - 42000) / 24000

18000 / 24000

= 0.75

The z-score is a standardized score that tells us how many standard deviations a data point is away from the mean. It is calculated as:

z = (x - mu) / sigma

where x is the raw score, mu is the mean, and sigma is the standard deviation.

For a normally distributed set of data with a mean of 10 and a standard deviation of 3, the z-score for each of the following raw scores would be:

x = 7

z = (7 - 10) / 3 = -1

The z-score for a raw score of 7 is -1.

x = 12

z = (12 - 10) / 3 = 0.67

The z-score for a raw score of 12 is 0.67.

x = 16

z = (16 - 10) / 3 = 2

The z-score for a raw score of 16 is 2.

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The reason for why the confidence intervals help researchers attain their purpose of using a sample to understand a population is given below .

In the question ,

we have been asked how does the confidence interval help researchers to attain the purpose of using a sample to understand a population ,

we know that , the confidence interval is calculated from an estimate of how far away our sample mean is from actual population mean .

the confidence interval are useful because ,

(i) by calculating the confidence intervals around any data we collect, we have additional information about the likely values we are trying to estimate .

(ii) they make data analyses richer and help us to make more informed decisions about the research questions .

Therefore , the reason how confidence interval helps is mentioned above.

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The probability of selecting a sample of 20 children and having exactly 3 children who are from multiple births is approximately 0.214

To calculate the probability of selecting a sample with exactly 3 children who are from multiple births, we need to use the binomial distribution formula

P(X = k) = C(n, k) × p^k × (1 - p)^(n - k)

where

X is the random variable representing the number of children from multiple births in the sample

k is the number of children from multiple births we are interested in (in this case, k = 3)

n is the sample size (in this case, n = 20)

p is the probability of selecting a child from a multiple birth (let's assume this is 0.03, or 3%, based on some statistics for multiple births in some regions).

C(n, k) is the number of ways to choose k children from a sample of n children, which is given by the binomial coefficient

C(n, k) = n! / (k! × (n - k)!)

Plugging in the values, we get:

P(X = 3) = C(20, 3) × 0.03^3 × (1 - 0.03)^(20 - 3)

= (20! / (3! × 17!)) × 0.03^3 × 0.97^17

≈ 0.214

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Answer:  (-0.5, 9)

-0.5 = -1/2

=====================================================

Explanation:

Add up the x coordinates and then divide the result by 2

(3 + (-4))/2 = (3 - 4)/2 = -1/2 = -0.5

Do the same for the y coordinates

(10+8)/2 = 18/2 = 9

The midpoint is therefore located at (-0.5, 9)

This is the same as saying (-1/2, 9)

The decimal form of this answer might be easier to deal with.

The correct statement regarding the translation of the functions f(x) and h(x) is given as follows:

The graph of h is a translation of 4 units left and 7 units down of f(x).

A translation happens when either a figure or a function are moved horizontally or vertically on the coordinate plane.

The four translation rules for functions are defined as follows:

The meaning of each translation from function f(x) to function h(x) is given as follows:

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Answer:

The width of the rectangle is the same as the length of the cylinder (h). The area of each of the two circles is \\ (\\pi r^2\\) and the area of the rectangle is \\ (2 \\pi r times h\\).

Step-by-step explanation:

The perimeter of the triangle is 170 inches.

To solve for the perimeter, we first need to find the length of the perpendicular height. We can do this using the sine function:

sin(35°) = 46/x

x = 46/sin(35°) = 65 inches

Now that we know the length of the perpendicular height, we can find the length of the base of the triangle using the cosine function:

cos(35°) = 65/x

x = 65/cos(35°) = 75 inches

The perimeter of the triangle is the sum of the lengths of the three sides, so the perimeter is:

P = 65 + 75 + 30

= 170 inches

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Good evening,

Answer: B

Step-by-step explanation:

-1/2(2+6x(-1)) = 3(3-(-1))-10

-1/2(2+-6) = 3(3+1))-10

-1/2(-4) = 3x4-10

2=3x4-10

2=12-10

2=2

There are 360 black counters and 306 white counter in 20:17 ratio.

Let's denote the number of black counters by B and the number of white counters by W. We know that the ratio of black to white counters is 20:17, which means that:

B/W = 20/17

We also know that there are 54 more black counters than white counters, which means that:

B = W + 54

We can use substitution to solve for B. Substituting the second equation into the first equation, we get:

(W + 54)/W = 20/17

Cross-multiplying, we get:

17(W + 54) = 20W

Expanding the left side, we get:

17W + 918 = 20W

Subtracting 17W from both sides, we get:

918 = 3W

Dividing both sides by 3, we get:

W = 306

Now we can use the second equation to find B:

B = W + 54 = 306 + 54 = 360

Therefore, there are 360 black counters in the bag.

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Answer:

thousands place: 8

tens place: 1

Step-by-step explanation:

Answer: 8 thousands 1 or 10 tens

Step-by-step explanation:

brainiest please hope this helps

Answer:

Ano bayan puro Math nalang nakikita ko

Answer:

Some factors of 9 are 9,18,27,36,45,54,63,72,81,90,99,108 so the first multiple of 9 would be 9

The area of a rectangular patio with the dimensions of 18-3/4 feet and 12 feet will be determined by using the formula for the area of rectangle.

Area of rectangle is calculated by multiplying the length of the rectangle to the width of the rectangle. i.e.,

Area of rectangle= Length*Width

In the given situation,

Length= 18-3/4feet

Width=12 feet.

1. Convert the value of length to improper fraction:

18-3/4=75/4

2. Multiply the length and width to find the area:

Area=(75/4)x12

Solving the expression:

3. Area=75x3=225 sq. feet

The area of a 18-3/4 feet and 12 feet rectangular patio is 225 sq. feet.

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Answer:

64 times more paint will be needed since the volume of the second is 64 times the volume of the first

Step-by-step explanation:

If the original sphere is 12 cm diameter

its radius will be half this measure which is 12/2 = 6 cm

The new diameter is 4 times this, so its radius would be 4 times this and it is 24 cm

Now, the volume of the sphere means we have to raise the power of the radius by 3

The other terms in the formula remains the same for both, so we are simply comparing the radii

so we will have the difference in volume in times of multiples as ;

(24/6)^3 = 4 * 4 * 4 = 64

Answer:

next time answer my Question instead of saying you just need points

Step-by-step explanation:

Answer:1,250

Step-by-step explanation:

You have to do 3750 Divided by 3 and you get 1,250

The answer is:

Whether you add or subtract the equations, you get the same resulting equation in one variable.

So we know that the number x is multiplied by 4, and then is bigger then itself by 45, so so lets set up this equation.

4x = x + 45

The 4x is our x multiplied by 4 and the x + 45 is when it exceeds itself by 45.

Now lets solve:

4x = x + 45

Bring x to one side to isolate the variable:

4x - x = 45

3x = 45

Now we divide the 3 from the 3x in order to fully isolate the variable:

x = 45 / 3

x = 15

Lets plug 15 in to double check the answer:

4(15) = 15 + 45

60 = 60

Yes!

This means that 15 is the number multiplied by 4 and exceeded by 45.

I hope this helps! :)

Answer:

18 hours during the week days

Step-by-step explanation:

weekend pay + week day pay = total pay

93 + week day pay = 232.50

Subtract 93 from each side

93-93 + week day pay = 232.50-93

week day pay = 139.50

She makes 7.75 per hour

139.50 = hours * pay rate

139.50 =  hours*7.75  

Divide each side by 7.75

139.50/7.75 = hours

18 = hours

Utilizing factorization, the factors of 48x-12y are 2, 2, 3, and 4x-y.

Writing a number or other mathematical object as the result of numerous factors—typically smaller or simpler objects of the same kind—is known as factorization or factoring in mathematics. For instance, factorizing the number 15 is 3 5. A factor is a number that completely divides another number. To put it another way, if adding two whole numbers results in a product, then the numbers we are adding are factors of the product since the product is divisible by them. Factors can be found using either division or multiplication.

Here,

Factor of 48x-12y,

=12(4x-y)

=2*2*3*(4x-y)

The factors of 48x-12y is 2, 2, 3 and 4x-y using factorization.

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Please Brainliest

The origin of the number zero is believed to be ancient India, where it was invented as a placeholder in the decimal system around the 5th century CE. The concept of zero as a number in its own right was a revolutionary idea that greatly advanced mathematical understanding and allowed for much more efficient mathematical calculation. From India, the use of zero spread to the Islamic world and eventually to the West. The modern representation of zero as a circle or a digit was introduced in the 13th century in India.

Answer:

-1, -1, be parallel, and "the same slope"?

Step-by-step explanation:

the last one is iffy but I believe its somewhere around that

According to TB incidence data from 2019, the true statement about TB incidence in that year is that "The Texas TB incident rate is above the national target."

TB incidence in 2019 refers to the statistical measure of the occurrence of tuberculosis disease within a specific region or population during that year. It provides valuable insights into the number of individuals infected by TB bacteria and the reported cases of the disease within the same timeframe. In this context, the available data indicates that the TB incident rate in Texas surpasses the national target. This suggests that the incidence of tuberculosis cases in Texas exceeded the desired level set as a goal at the national level.

It's important to note that without further details, such as the specific national target or the actual incidence rates, we cannot provide precise figures or make comparisons to other options. However, based on the given statement, we can conclude that the TB incident rate in Texas in 2019 was higher than the intended national target.

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Answer: f(2)=-10     f(-3)=15

Step-by-step explanation:

Let the number conceived be x.

Hence,

f(x)=(x+5)(-3)-2x+15

f(x)=-3x-15-2x+15

f(x)=-5x

Thus,

f(2)=(-5)(2)

f(2)=-10

f(-3)=(-5)*(-3)

f(-3)=15

Answer:a

Step-by-step explanation:

Doing it now on usatestprep

No, it is not possible to have a simple graph with n vertices, where n is any integer greater than or equal to 5, such that all vertices have different degrees.

In a simple graph, the degree of a vertex refers to the number of edges connected to that vertex. The maximum degree possible in a graph with n vertices is (n-1), which occurs when one vertex is connected to all other vertices.

To create a graph where all vertices have different degrees, we would need to assign a unique degree to each vertex. However, if n is greater than or equal to 5, we cannot assign n unique degrees to n vertices while satisfying the conditions of a simple graph.

To see why, consider the case of n = 5. We need to assign degrees 1, 2, 3, 4, and 5 to the vertices.

The vertex with degree 5 must be connected to all other vertices, leaving us with four remaining degrees (1, 2, 3, and 4) to assign to the remaining four vertices. However, no matter how we distribute these degrees, at least two vertices will have the same degree.

This argument can be extended to any value of n greater than 5. Therefore, it is not possible to construct a simple graph with n vertices where all vertices have different degrees for any integer n ≥ 5.

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Answer:

  2/15

Step-by-step explanation:

You want to know the fraction that is 2/3 of 1/5.

In this context, "of" means "times."

  2/3 of 1/5 = (2/3)×(1/5) = (2·1)/(3·5) = 2/15

2/15 of the pets are alley cats.

Answer:

$1710

Step-by-step explanation:

multiply 125 by 13 which is 1625 then add 85 which gives you a total $1710