calculate the value of 12-3×0​

Answer:

The third option.

The others are being multiplied by a negative, which a negative times a negative is a positive, but the third is 3 negatives and 1 positive so it is positive.

Step-by-step explanation:

Hope it helps! =D

The solution of the linear equations −2x + 3y = 15 and x + y = 10 will be (3. 7). Then the correct option is B.

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

The system of linear equations is given below.

−2x + 3y = 15         ....1

x + y = 10

2x + 2y = 20           ...2

Add equations 1 and 2, then we have

5y = 35

y = 7

Then the value of the variable 'x' is given as,

x + 7 = 10

x = 3

The solution of the linear equations −2x + 3y = 15 and x + y = 10 will be (3. 7). Then the correct option is B.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

#SPJ1

Answer:

25

Step-by-step explanation:

l x w = h

25 x 7.2 = 180

Using the monthly payment formula, he needs to deposit A = $1,342.12 a month to reach his goal.

It is given by:

\(A = P\frac{\frac{r}{12}\left(1 + \frac{r}{12}\right)^n}{\left(1 + \frac{r}{12}\right)^n - 1}\)

In which:

For this problem, the parameters are:

P = 250000, r = 0.05, n = 12 x 30 = 360.

Then:

r/12 = 0.05/12 = 0.004167.

Then:

\(A = P\frac{\frac{r}{12}\left(1 + \frac{r}{12}\right)^n}{\left(1 + \frac{r}{12}\right)^n - 1}\)

\(A = 250000\frac{0.004167(1+0.004167)^{360}}{(1+0.004167)^{360} - 1}\)

A = $1,342.12

More can be learned about the monthly payment formula at https://brainly.com/question/26267630

#SPJ1

Answer:

\(8.5x+4y=99.5,\ x+y=17\)

Step-by-step explanation:

\(\mathrm{System\ of\ equations:}\\8.5x+4y=99.5\\x+y=17\\\mathrm{where,}\ x\ \mathrm{is\ the\ number\ of\ popcorns\ and\ }y\mathrm{\is\ the\ number\ of\ candies}\)

Answer:

The answer is C.

Step-by-step explanation:

You have to divide it by 2 :

∠XYZ = 148° ÷ 2

= 74°

Answer:

2.4 makes it true!

I love you

yea yea yea yea yea

Step-by-step explanation:

Answer:

60.4

Step-by-step explanation:

Add the length and width together twice to get the perimeter.

If Pete works for  45.25 hours during the week and 5.75 hours on Saturday, his earning will be]$981.68

From the question, Pete's regular work week is 40 hours and his regular salary is $15.77/h.

To determine how much Pete will make if he works 45.25 hours during the week and 5.75 hours on Saturday,

If he worked 45.25 hours during the week, then he has worked 5.25 hours overtime, since his regular work week is 40 hours.

From the question, he earns time and a half for overtime hours worked during the week (Monday to Friday), that is,

∴ For working 5.25 hours overtime, he will earn for 5.25hours × 1.5 = 7.875 hours

Also, from the question, he earns double time and half if he has to work on a Saturday

∴ For working 5.75 hours on Saturday, he will earn for 5.75 hours × 2.5 = 14.375 hours

Since his regular salary is $15.77/h,

Therefore, Pete will earn

40 × $15.77 = $630.8 (for his regular work week)

7.875 × $15.77 = $124.18875 (for overtime hours worked during the week)  

and 14.375 × $15.77 = $226.69375 (for working on Saturday)

Hence,  if Pete works for  45.25 hours during the week and 5.75 hours on Saturday, his earning will be $630.8 + $124.18875 + $226.69375 = $981.6825 ≅ $981.68

Learn more here: https://brainly.com/question/19054648

Answer:

30.9717685346

Step-by-step explanation:

Answer:

54

Step-by-step explanation:

Answer:

the correct answer is 193

Step-by-step explanation:

25×1-0=25

25×2-1=49

49×2-1=97

97×2-1=193

Step-by-step explanation:

let's just apply common sense :

1/4 is Rosine, so, 800/4 = 200 kg Rosine.

1/5 is Lomelite, so, 800/5 = 160 kg Lomelite.

that leaves 800 - 200 - 160 = 440 kg Anderte

that's really it.×

FYI - when we use fractions for everything, we would say

1/4 = 5/20 Rosine

1/5 = 4/20 Lomelite

that leaves 20/20 - 5/20 - 4/20 = (20-9)/20 = 11/20 if Anderte.

For any given positive real number x and natural number n, there exists a unique positive real number r such that \(x = r^n\).

Let x be a positive real number and n be a natural number. We want to show that there exists a unique positive real number r such that \(x = r^n\). This can be expressed mathematically as \(x^(1/n) = r\), where r is the unique positive real number we are looking for.

To solve for r, we can take the nth root of both sides of the equation. This gives us \(r = x^(1/n)\). Since x is a positive real number and n is a natural number, it follows that r is also a positive real number.

Furthermore, since x is a fixed value and n is a fixed value, we can conclude that the positive real number r is unique. In other words, for any given x and n, there is only one r that satisfies the equation \(x = r^n\).

Therefore, for any given positive real number x and natural number n, there exists a unique positive real number r such that \(x = r^n\).

Learn more about positive real number here:

https://brainly.com/question/14806899

#SPJ4

Answer:

you forgot the rest of the question homie but once there is 20 companies both companies will be equal

Step-by-step explanation:

Answer:

20 windows

Step-by-step explanation:

Answer:

In fraction: -9/22

In decimal: -0.409 with repeating over the 09

Step-by-step explanation:

Answer:

90

Step-by-step explanation:

$5.29  * 16.3 = $86.227

=$86.23

86.23 could be rounded up to 90

There are a total of 3 forwards on the team.

A fraction represents a part of the whole or group of objects.In a fraction, numerator and denominator are separated by a horizontal bar known as the fractional bar

Given:

2/8 of the players are forwards.

Total number of players on the team = 12

We will determine the total number of forwards on the team by multiplying the total number of players by the fraction representing the forwards.

Fraction representing the forwards:

= 2/8

= 1/4

Total forwards on the team:

= 12 * (1/4)

= 3.

Translated question:

Of the 12 players on the team, 2/8 are forwards. What are the total forward in the team?

Read more about fraction

brainly.com/question/17220365

#SPJ1

9514 1404 393

Explanation:

A. The given equation will have a solution when the value of x makes the left-side expression equal to the right-side expression.

The value of the left-side expression for a given value of x is the y-value of y=4^x. The value of the right-side expression for a given value of x is the y-value of y=2^(x-1). The left-side expression will be equal to the right-side expression for a given value of x when the graph of y=4^x and the graph of y=2^(x-1) have the same y-value. That is, the graphs will be of the same point for that x-value. That is what we mean when we say the curves will intersect at that point.

The x-coordinate of the point of intersection is the value that makes the expressions equal, hence it is the solution to the equation.

__

B. The tables are included in the first attachment. We have used f(x) to represent the left-side expression, and g(x) to represent the right-side expression.

__

C. As described in Part A, the graphs will cross at the solution point. Hence the equation can be solved graphically by graphing the left-side expression and the right-side expression and seeing where the graphs cross. (That is at the point (-1, 0.25) on the attached graph.)

Alternate graphical method

The solution can also be found graphically by graphing the difference of the expressions: y = 4^x -2^(x-1). This difference will be zero at the value of x that makes the two expressions equal. That is, the x-intercept of the graph of this difference will be the solution value. The second attachment shows this sort of graphical solution. (It works nicely because many graphing calculators will display the value of the x-intercept.)

The value of c is 1/17.

It is a branch of mathematics that deals with the occurrence of a random event.

Here it is given that the function f(x) can serve as a probability distribution of the discrete random variable X when f(x) = c(x² + 4), for x = 0, 1 ,2

We have to find the value of c

Since f(x) represents the probability distribution x = 0, 1 ,2

So we have f(0)+f(1)+f(2)=1

c(0²+4)+c(1²+4)+c(2²+4)=1

4c+5c+8c=1

17c=1

Divide both sides by 17

c=1/17

Hence, the value of c is 1/17.

To learn more on probability click:

https://brainly.com/question/11234923

#SPJ1

Determine the value c so that each of the following function can serve as a probability distribution of the discrete random variable X when f(x)=c(x2+4), for x=0, 1,2?

a.

1/3

b.

1/17

c.

1/2

d.

1/13

No, the rank of the product of two n by n square matrices A and B, denoted as AB, cannot be less than n-1 if both A and B have ranks of n-1.

According to the Rank-Nullity theorem, for any matrix M, the sum of its rank and nullity is equal to the number of columns in M. In this case, the number of columns in AB is n, so the sum of the rank and nullity of AB must be n.

If rank(A) = rank(B) = n-1, it means that both A and B have nullity 1. The nullity of a matrix is the dimension of its null space, which consists of all vectors that get mapped to the zero vector when multiplied by the matrix. Since both A and B have rank n-1, their null spaces consist only of the zero vector.

Now, considering AB, if the rank of AB were less than n-1, it would mean that the nullity of AB is greater than 1.

However, this would violate the Rank-Nullity theorem since the sum of the rank and nullity of AB must be n, which is the number of columns.

Therefore,  if rank(A) = rank(B) = n-1, the rank of AB cannot be less than n-1.

For more such questions on rank

https://brainly.com/question/28839672

#SPJ8

Answer:

  E.  a^(1/3)b^(1/6)

Step-by-step explanation:

You want an expression equivalent to (a^(2/3)b^(1/3))^(1/2).

The applicable rules of exponents are ...

  (a^b)^c = a^(bc)

  (ab)^c = (a^c)(b^c)

The given expression simplifies to ...

  \((a^{2/3}b^{1/3})^{1/2}=a^{(2/3)(1/2)}b^{(1/3)(1/2)}=\boxed{a^{1/3}b^{1/6}}\)

Answer:

He can buy 10 cds

Step-by-step explanation:

125-30=95

95 divided by 9 = 10.5555555556

Answer:

0.16 can be written with 100 as the denominator.

16/100

To simplify, divide the top and bottom by 4.

4/25

:)

Answer:

Step-by-step explanation:

•To convert the given number into fraction first remove the decimal..

= > 0.16 = 16/100

• Solve the fraction and bring it in the lowest form

= 4/25...ans

Number of seats in each row is 51 given that a rectangular auditorium seats 2244 people and number of seats in each row exceeds the number of rows by 7. This can be obtained by assuming the value of number of seats in each row, forming quadratic equation and using quadratic formula to find root.

Here in the question it is given that,

We have to find the number of seats in each row.

Let us assume that the number of seats in each row be x.

From the given statement, number of seats in each row exceeds the number of rows by 7, we can write that,

Number of seats in one row = Number of rows + 7

x = Number of rows + 7

⇒ Number of rows = x - 7

Total number of seats in the auditorium can be written as,

⇒ (Number of seats in one row)(Number of rows) = Total number of seats

(x)(x - 7) = 2244

x² - 7x = 2244

⇒ x² - 7x - 2244 = 0

By using quadratic formula we can find the root,

x = (-b ± √b² - 4ac)/2a

here in the question, a = 1, b = -7, c = -2244

√b² - 4ac = √(-7)² - 4(1)(-2244)

√b² - 4ac = √49 + 8976

√b² - 4ac = √9025

√b² - 4ac = 95

x = (-b ± √b² - 4ac)/2a

x = (7 ± 95)/2

x = 102/2 or x = -88/2

⇒ x  = 51 or x = -44

Hence number of seats in each row is 51 given that a rectangular auditorium seats 2244 people and number of seats in each row exceeds the number of rows by 7.

Learn more about quadratic formula here:

brainly.com/question/26926523

#SPJ9

if 1 2 3 = 2

then 3 5 4 = 5

hope it helps:)

The answer to the sum is: ∑ k⁴ (k  ranges from 1 to 6)

Express the sum in sigma notation :

According to the question,

1 = lower limit of summation

k = the index of summation

1 + 16 + 81 + 256 + 625 + 1296 = 1² + 4² + 9² + 16² + 25² + 36²

                                                 = 1⁴ + 2⁴ + 3⁴ + 4⁴ + 5⁴ + 6⁴ ( i.e 16 = 4²=(2²)²)

                                                 = ∑ k⁴ (k ranges from 1 to 6)

 So, The answer to the sum is - ∑ k⁴ (k ranges from 1 to 6).    

Read more about  sigma notation :

https://brainly.com/question/28163163

#SPJ4                                      

Answer:

I am not sure if you're accustomed to using a z-score and table of probabilities or technology, so I will answer using both!

a) Since you're choosing one person from the population, you will use the mean and standard deviation from the population.  z= (210.9-197.5)/8.6 = 1.56 Using a table of normal probabilities,

P(x>210.9)= 1-P(z<1.56)= 1- 0.9406=0.0594

Using technology: normalcdf(210.9, 1E99, 197.5, 8.6)=0.0596

b) Since you're calculating the population for a sample to occur, you need to get a mean of the sampling distribution and standard deviation of the sampling distribution.

Meanpop=Meansampling dist.=197.5

St. Devsampling dist.= Stdpopulation/√n = 8.6/√15 = 2.22

Using technology, P(X>196.20)= normalcdf( 196.20, 1E99, 197.5, 2.22) = 0.7209

c) You only have to worry about the sample size in a sampling distribution if you either do not know the shape of the distribution of the population or if the distribution of the population is not normally distributed. Since this population is normally distributed (as stated in the given information), then your sample size does not have to be greater than 30.

Step-by-step explanation: