1. Solve, 2x-4=10.
Pls solve now

Answer:

87 students

Step-by-step explanation:

We know

12 out of every 15 students owns a cell phone, so the ratio of student who owns cell phone is 12:3. For every 15 students, there are 12 own cellphones, and 3 do not.

To find there are 435 students surveyed, how many do not own a cell phone? We take

435 / 15 = 29

3 x 29 = 87 students

So, 87 students do not own a cellphone.

Polynomials form a system like to that of integers hence they are closed under the operations of addition and subtraction.

Exponents of polynomials are whole numbers.

Hence the resultant exponents will be whole numbers , addition is closed for whole numbers. As a result, polynomials are closed under addition.

If an operation results in the production of another polynomial, the resulting polynomials will be closed.

The outcome of subtracting two polynomials is a polynomial. They are also closed under subtraction as a result.

The word polynomial is a Greek word. We can refer to a polynomial as having many terms because poly means many and nominal means terms. This article will teach us about polynomial expressions, polynomial types, polynomial degrees, and polynomial properties.

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Remove the parentheses, Move the terms, Calculate, Divide both sides, write in parametric form.

Answer should be r = 3/5p + 9, pER

Answer:

Volume 6*6*6=216 cu

pa braintest

The given statement is FALSE.

In a two-dimensional array, both dimensions do not necessarily have to have the same number of elements. The syntax [10][10] implies a two-dimensional array with 10 elements in each dimension, resulting in a square matrix of size 10x10.

However, it is possible to have a two-dimensional array where the number of elements in each dimension differs. For example, an array declared as [5][3] would have 5 elements in the first dimension and 3 elements in the second dimension, resulting in a matrix with 5 rows and 3 columns.

The dimensions of a two-dimensional array represent its structure and the arrangement of its elements in rows and columns. It is common for arrays to have different sizes in each dimension to accommodate specific data requirements. This flexibility allows for more dynamic storage and manipulation of data.

For instance, you might need a two-dimensional array to store data in a tabular format, where the number of rows can vary while the number of columns remains constant.

Hence, it is not necessary for both dimensions of a two-dimensional array to have the same number of elements. Arrays can have different sizes in each dimension, providing flexibility in storing and organizing data based on specific requirements.

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The correct statement is:

a. As analogue to digital conversion is a dynamic process, each conversion takes a finite amount of time called the quantization time.

Analog-to-digital conversion is the process of converting continuous analog signals into discrete digital representations. This conversion involves several steps, including sampling, quantization, and encoding.

During the quantization step, the continuous analog signal is divided into discrete levels or steps. Each step represents a specific digital value. The quantization process introduces a finite amount of error, known as quantization error, due to the approximation of the analog signal.

Since the quantization process is dynamic and involves the discretization of the continuous signal, it takes a finite amount of time to perform the conversion for each sample. This time is known as the quantization time.

During this time, the analog signal is sampled, and the corresponding digital value is determined based on the quantization levels. The quantization time can vary depending on the specific system and the required accuracy.

Therefore, statement a. accurately states that analog-to-digital conversion is a dynamic process that takes a finite amount of time called the quantization time for each conversion.

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Answer:

D-     no, because not enough is information given to prove the triangles congruent by SAS

Step-by-step explanation:

^^I gotchu kuh

Answer:

the answer is d

Step-by-step explanation:

Answer:

28

Step-by-step explanation:

(3)×3 - 2×(-2)×(1) + 5×(3)×(1)

9 - -4 + 15 = 28

Answer:

46

Step-by-step explanation:

Given

a³ - 2bc + 5ac ← substitute values for a, b, c into the expression

= 3³ - (2 × - 2 × 1) + (5 × 3 × 1)

= 27 - (- 4) + 15

= 27 + 4 + 15

= 46

To find the required sample size for a margin of error less than 3%, we can rearrange the formula for the margin of error:

\(n = (Z^2 * p * (1 - p)) / (E^2)\)

Here, Z represents the critical value, p is the estimated proportion (0.51), and E is the desired margin of error (0.03)

To determine the margin of error for the 95% confidence interval, we need to use the formula:

Margin of Error = Critical value * Standard error

The critical value for a 95% confidence level can be obtained from the standard normal distribution table, which corresponds to 1.96. The standard error can be calculated using the following formula:

Standard error = \(\sqrt{(p * (1 - p) / n)}\)

Given that the proportion of North Carolina residents planning to set off fireworks is estimated to be 51% (0.51) based on the survey, we can substitute the values into the formula. However, the sample size (n) is not provided in the question, so we need to determine it in the next part.

To find the required sample size for a margin of error less than 3%, we can rearrange the formula for the margin of error:

\(n = (Z^2 * p * (1 - p)) / (E^2)\)

Here, Z represents the critical value, p is the estimated proportion (0.51), and E is the desired margin of error (0.03). Substituting these values into the formula, we can solve for the required sample size.

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Answer:

See below

Step-by-step explanation:

Q1. when 3b-4a is evaluated for a=0.5 and b=-0.333333333. what is the answer?

\(3b-4a, a=0.5 \text{ and } b=-0.333333...\)

Once

\($-0.3333333... = -\frac{1}{3} \text{ and } 0.5=\frac{1}{2} $\)

\($3\cdot \left(-\frac{1}{3}\right) - 4 \cdot \frac{1}{2} = -1 - 2 =\boxed{-3}$\)

Q2. solution for equation  

\(5(x+1)-3(3x-1)=15(x-2)\)

\(5x+5-9x+3 = 15x-30\)

\(-4x+8 = 15x-30\)

\(38 = 19x\)

\($x=\frac{38}{19} = \boxed{2}$\)

Q3. which is not equivalent to \(4(2x-1)=3(x+1)-2\)

Just try all the values.

None of them makes the equation equivalent.

\(8x-4=3x+1-2\)

\(5x=5\)

\(\boxed{x=1}\)

Q4. if a<0 and b<0 which of the following is not positive

B. a+b

\(a<0 \implies \text{a is negative}\)

\(b<0 \implies \text{b is negative}\)

\(a \cdot b \implies \text{positive value}\)

\($\frac{a}{b} \implies \text{positive number}$\)

\(a:b \text{ is just another notation for division}\)

\(a+b \implies \text{negative number}\)

Answer:

b

Step-by-step explanation:

b bc its the besttt!!!!

The area of the region is (27π/4) square units.

We have,

To find the area of the region inside the circle (x + 3)² + y² = 9 and outside the circle x² + y² = 9, we can use a double integral in polar coordinates.

The region is an annulus (a region between two concentric circles) with the smaller circle centered at (-3,0) and radius 3, and the larger circle centered at the origin and radius 3.

We can rewrite the equations of the circles in polar coordinates as:

(x + 3)² + y² = 9

And,

r² + 2r cos(theta) + 9 = 9

r² + 2r cos(theta) = 0
r = -2 cos(theta)

And,

x² + y² = 9

r² = 9

The region can be described as 0 ≤ r ≤ 3 and -π/2 ≤ θ ≤ π/2 since we are only interested in the part of the region above the x-axis.

The area of the region can be calculated using the following double integral:

A = ∫∫R r dr dθ

where R is the region in polar coordinates.

We can integrate with respect to r first:

A = ∫(-π/2)^(π/2) ∫0³ r dr dθ

= ∫(-π/2)^(π/2) [(1/2) r²]_0³ dθ

= ∫(-π/2)^(π/2) (9/2) dθ

= (9/2) [θ]_(-π/2)^(π/2)

= (9/2) [π - (-π/2)]

= (9/2) (3π/2)

= (27π/4)

Thus,

The area of the region is (27π/4) square units.

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The type of variable that represents the names of the automobile manufacturers would be the categorical variable.

A variable is defined as the quantity that may change within the context of a mathematical problem, research work or an experiment.

There are various types of variables that include the following:

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Answer:

672 had dark hair, 592 had blond hair, and 48 had red hair

Step-by-step explanation:

To solve this problem, we need to first find the total number of people for each hair color based on the given ratio.

Let's start by finding the common factor that we can use to scale the ratio up to the total number of people, which is 1,312:

42 + 37 + 3 = 82

We can then divide 1,312 by 82 to get the scaling factor:

1,312 ÷ 82 = 16

This means that for every 16 people, there are 42 with dark hair, 37 with blond hair, and 3 with red hair.

To find the actual number of people with each hair color in the town meeting, we can multiply the scaling factor by the number of people for each hair color in the ratio:

Dark-haired people: 42 × 16 = 672

Blond-haired people: 37 × 16 = 592

Red-haired people: 3 × 16 = 48

Therefore, there are 672 people with dark hair, 592 people with blond hair, and 48 people with red hair at the town meeting.

Answer:

The answer I was able to get was 0.

The correct option is A. m∠X = 45° as the triangles ABC and XYZ are congruent.

Congruent triangles are two triangles that have the same shape and size. In other words, if two triangles are congruent, then all their corresponding sides and angles are equal. Some methods that allow us to compare the lengths of corresponding sides and the measures of corresponding angles in the two triangles and determine whether they are equal includes: SSS (side-side-side), SAS (side-angle-side), ASA (angle-side-angle), AAS (angle-angle-side), or HL (hypotenuse-leg).

The angle m∠A corresponds to the angle m∠X given that the triangles ABC and XYZ are congruent.

In conclusion, the correct option for the congruent triangles is A. m∠X = 45°.

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The points of intersection between the graphs of y = x³ + x² - 2x + 4 and y = 4x + 4 is 0 , 2 , -3

The point of intersection is the point where two lines , curves meet each other .

According to the question,

The equation of graph = y = x³ + x² - 2x + 4

equation of line = y = 4x + 4

The point of intersection between the graph and line will be

substituting the value of y

  4x + 4 = x³ + x² - 2x + 4

=> subtracting by 4 both sides

=> 4x = x³ + x² - 2x

=> x³ + x² - 6x = 0

Factorization,

=> x(x-2)(x + 3) = 0

=> x = 0 ,2 , -3

Hence , the points of intersection is 0 , 2 , -3

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Answer:

A) 200 N 1.4 m 40 kg.

Step-by-step explanation:

I hope this is correct, if it is im glad to be of help.

Answer:

See below

Step-by-step explanation:

\(1\cdot24=2\cdot12=3\cdot8=4\cdot6=24\)

Answer:

1. 24

2. 12

3. 8

4. 6

Step-by-step explanation:

2 x 12 = 24, 3 x 8 = 24, 4 x 6 = 24

Answer:

105°.

Step-by-step explanation:

1) to calculate m(∠ABC): m(∠ABC)=180-m(∠BAC)-m(∠(ACB)=180-90-65=25°;

2) note, m(∠ABC)=m∠(ABD)=25°, then it is possible

3) to calculate m(∠BAD): m(∠BAD)=180-m(∠ABD)-m(∠ADB)=180-25-50=105°.

:According to the question:You are working with a population of crickets. Before the mating season you check to make sure that the population is in Hardy-Weinberg equilibrium, and you find that the population is in equilibrium.

During the mating season you observe that individuals in the population will only mate with others of the same genotype (for example Dd individuals will only mate with Dd individuals). There are only two alleles at this locus ( D is dominant, d is recessive), and you have determined the frequency of the D allele =0.6 in this population. Selection acts against homozygous dominant individuals and their survivorship per generation is 80%. After one generation the frequency of DD individuals will decrease in the population.

According to the Hardy-Weinberg equilibrium equation p² + 2pq + q² = 1, the frequency of D (p) and d (q) alleles are:p + q = 1Thus, the frequency of q is 0.4. Here are the calculations for the Hardy-Weinberg equilibrium:p² + 2pq + q² = 1(0.6)² + 2(0.6)(0.4) + (0.4)² = 1After simplifying, it becomes:0.36 + 0.48 + 0.16 = 1This means that the population is in Hardy-Weinberg equilibrium. This is confirmed as the frequencies of DD, Dd, and dd genotypes

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Answer: There is one candle for each night of Hanukkah, and the ninth candle, which sits in the middle, is known as the shamash, which translates to attendant or servant candle. This candle is lit first and is used to light the others.

Step-by-step explanation:

Answer: No, whether people over eat or never eat does not depend on their age. It naturally depends on how you ate as a kid, because if you eat alot as a kid your eating habits grow into that as you get older because your stomach has gotten used to lots of food.

Step-by-step explanation:

Answer:

3x^2-6x+3=0

x^2-2x+1=0

x^2-x-x+1=0

x(x-1)-(x-1)=0

(x-1)(x-1)=0

x=1,1

so x has only one answer

so it intersects only one time

The probability that the next puck Dave grabs will be green is 1/6 or approximately 0.167.

To determine the probability of Dave grabbing a green puck on the next grab, we need to calculate the probability based on the given data.

Given:

Number of red pucks = 4

Number of orange pucks = 3

Number of yellow pucks = 1

Number of pink pucks = 2

Number of green pucks = 2

Total number of pucks = 4 + 3 + 1 + 2 + 2 = 12 pucks

The probability of grabbing a green puck can be calculated as:

Probability = Number of green pucks / Total number of pucks

Probability = 2 green pucks / 12 pucks

Probability = 1/6

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It will take Daquin 63min to finish rest of his homework which is 70% of the total homework, if 30% is done in 27 minutes.

Daquin has completed 30% of his work.

Remaining work will be 100-30 = 70%

Means 70% of the total work is remaining to do by Daquin.

By applying unitary method:

Since, to do 30% of the homework it take 27 minutes.

Therefore, To do 1% of the homework it will take 27/30 minutes.

So, To do 70% of the homework it will take (27/30)×70 min

= 63 min

Hence, It will take him 63min to finish rest of his homework.

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Answer:

x^2-16/25=0

x²=16/25

x=√(16/25)=4/5

= 70% of the flowers are carnations

Probability tells you which outcome is more likely to occur in any given event. You could determine the probability of the particular outcome by dividing the number of times that the outcome has occurred by the total no of events.

we are given that,

6/10 = 3/5 of the flowers are pink, do

we know .2/5 of the flowers are red .

Since 1/3 of the pink flowers are roses, 2/3 of

the pink flowers are on Carnations .

we are given that 2/4 of the red

flowers are carnations .

The number carnations are

\(\frac{3}{5} * \frac{2}{3} + \frac{2}{5} * \frac{3}{4}\)

\(=\frac{2}{5} +\frac{3}{10}\)

\(= \frac{4 + 3}{10}\)

\(=\frac{7}{10}\)

covert into percent

\(=\frac{7}{10} 100\)

= 70%

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The efficiency of a probability sampling technique may be assessed by comparing it to that of non-probability sampling techniques.

Probability sampling is a method of selecting participants randomly from a population, which ensures that every individual has an equal chance of being included in the sample.

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