may somebody help me please.

Answer:

x² + y² + 4x - 2y + 1 = 0

Step-by-step explanation:

The equation of a circle is given by the general equation;

(x-a)² + (y-b)² = r² ; where (a,b) is the center of the circle and r is the radius.

In this case; the center is (-2,1)

We can get radius using the formula for magnitude; √((x2-x1)² + (y2-y1)²)

Radius = √((-4- (-2))² + (1-1)²)

             = 2

Therefore;

The equation of the circle will be;

(x+2)² + (y-1)² = 2²

(x+2)² + (y-1)² = 4

Expanding the equation;

x² + 4x + 4 + y² -2y + 1 = 4 subtracting 4 from both sides;

x² + 4x + y² - 2y + 4 + 1 -4 = 0

= x² + y² + 4x - 2y + 1 = 0

Answer:

[tex]\large\boxed{x^2+y^2+4x-2y+1=0}[/tex]

Step-by-step explanation:

The standard form of an equation of a circle:

[tex](x-h)^2+(y-k)^2=r^2[/tex]

(h, k) - center

r - radius

The general form of an equation of a circle:

[tex]x^2+y^2+Dx+Ey+F=0[/tex]

We have the center (-2, 1). Substitute to the equation in the standard form:

[tex](x-(-2))^2+(y-1)^2=r^2\\\\(x+2)^2+(y-1)^2=r^2[/tex]

Put thr coordinates of the point (-4, 1) to the equation and calculate a radius:

[tex](-4+2)^2+(1-1)^2=r^2\\\\r^2=(-2)^2+0^2\\\\r^2=4[/tex]

Therefore we have the equation:

[tex](x+2)^2+(y-1)^2=4[/tex]

Convert to the general form.

Use [tex](a\pm b)^2=a^2\pm 2ab+b^2[/tex]

[tex](x+2)^2+(y-1)^2=4\\\\x^2+2(x)(2)+2^2+y^2-2(y)(1)+1^2=4\\\\x^2+4x+4+y^2-2y+1=4\qquad\text{subtract 4 from both sides}\\\\x^2+y^2+4x-2y+1=0[/tex]

5^2+6^2 = x^2

25+36 = x^2

61 = x^2 | sqrt

sqrt(61) = x^2

x ~ 7.81

The distance is 7.81

See the image

The answer is the forth one.

The range of the given function is:

We are given a modulus function f(x) by:

           [tex]f(x)=\dfrac{3}{4}|x|-3[/tex]

From the graph of the function we may see that the graph continuously decreases from x= ∞ to x=0 and at x=0 the function  attains the values ,

                                  f(0)= -3

and then it again increases continuously and goes to infinity.

Hence, the function covers all the real values between -3 to ∞

i.e. The range of the function in interval form is: [-3,∞)

         Hence, the answer is:

   All real numbers greater than or equal to -3​

The constant of variation in a direct variation is found by dividing the y-coordinate by the x-coordinate. Using this constant, we can determine the y-value of a point given the x-value. In this case, n = 5.

In a direct variation, the ratio of the two variables is constant. This means that the product of the two corresponding coordinates of any two points is always the same.

Given a point (4,20), we can find the constant of variation by dividing the y-coordinate by the x-coordinate, which yields 20/4 = 5. So, the constant of variation (k) is 5.

For the point (1, n), the product of the two coordinates should also yield the same constant of variation. Therefore, 1 * n = 5. Solving for n, we find that n = 5.

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Answer:

120 Degrees

Step-by-step explanation:

4/12 * 360

Answer:

I think the answer is 120 degrees.

Step-by-step explanation:

The mean of the students' data set is approximately 8.56 hours of sleep per night, while the mean of the teachers' data set is approximately 6.7 hours of sleep per night. This suggests that, on average, students get more sleep than teachers.

To find the mean of a data set, you need to add up all the values and then divide the sum by the total number of values. Let's start by finding the mean of the students' data set. Summing up the values: 7 + 6 + 8 + 9 + 8 + 9 + 10 + 10 + 10 = 77. Since there are 9 values in the data set, we can calculate the mean by dividing the sum by 9: 77 / 9 = 8.56 (rounded to two decimal places). Therefore, the mean of the students' data set is approximately 8.56 hours of sleep per night.

Next, let's find the mean of the teachers' data set. Summing up the values: 6 + 6 + 4 + 5 + 7 + 8 + 7 + 8 + 8 + 8 = 67. Since there are 10 values in the data set, we can calculate the mean by dividing the sum by 10: 67 / 10 = 6.7 (rounded to one decimal place). Therefore, the mean of the teachers' data set is approximately 6.7 hours of sleep per night.

The means tell us the average amount of sleep that students and teachers get each night. The mean of the students' data set (8.56) suggests that, on average, students get more sleep than the mean of the teachers' data set (6.7). This indicates that, based on this survey, students tend to get more sleep than teachers.

Answer: %53

Step-by-step explanation:

3/20=%15

15+32=%47 for both video games and camp

100-47= %53 left over for college

Answer: .53

Step-by-step explanation: Of Kylies $550, 32% was for a down payment for summer camp. This is calculated with the formula 550 x .32 = $176 down payment.

She used 3/20 for two video games. 3/20 = .15, so the video games cost .15 x $550 = $82.50.

Kylie spent $176 + $82.50 = $258.50.

$550 savings - $258.50 = $291.50 is the amount that she put into her savings account. Expressed as as decimal, it is 291.50/550 = .53, so she put .53 of her babysitting money into her college savings account.

The value of x is 11/3 for expression –4(–3x + 11)

An expression is combination of variables, numbers and operators.

Given expression is –4(–3x + 11)

Let us apply distributive property

–4(–3x + 11)

Minus four times of minus three x plus eleven

-4(-3x)-4(11)

Minus four times of minus three x minus four times of eleven

12x-44

12x=44

Divide both sides by 12

x=44/12

x=11/3

Hence, the value of x is 11/3.

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[tex](4 \times 2) + 2[/tex]

2x2x2+2=10. According to PEMDAS. You would multiply before you add so 2x2x2 equals 8 and then you add 2 more and you have 10

ANSWER

[tex](4 \frac{5}{8} , - 2\frac{3}{4} )[/tex]

EXPLANATION

The end points of the segment are:

[tex](5 \frac{1}{2} ,-4 \frac{1}{4} )[/tex]

and

[tex](3 \frac{3}{4} ,-1 \frac{1}{4} )[/tex]

The box represents the midpoint of the two points.

Using the midpoint formula;

[tex]( \frac{x_1+x_2}{2} , \frac{y_1+y_2}{2} )[/tex]

We substitute the end points of the line segment to obtain,

[tex]( \frac{5 \frac{1}{2} +3 \frac{3}{4} }{2} , \frac{ - 4 \frac{1}{?} + - 1 \frac{1}{4} }{2} )[/tex]

This simplifies to:

[tex]( \frac{37}{8} , - \frac{11}{4} )[/tex]

We convert back to mixed numbers to get,

[tex](4 \frac{5}{8} , - 2\frac{3}{4} )[/tex]

The correct choice is B

Answer:

13 1/2

Step-by-step explanation:

solve for x by simplifying both sides of the equation then isolating the variable.

you get 13 1/2

Answer:

The answer is 13 1/2

Step-by-step explanation:

Start by adding 2 to both sides.

2/3x - 2 = 7

2/3x = 9

Now multiply both sides by 3/2

2/3x = 9

x = 27/2

Now divide 27 by 2 which is 13 with a 1 remainder. We express that 1 over the 2 as the fraction.

13 1/2

Answer:

1

Step-by-step explanation:

The given expression is

[tex]\frac{2^{\frac{11}{2} }\times 2^{-7}\times 2^{-5}}{2^3\times 2^{\frac{1}{2} }\times 2^{-10}}[/tex]

Recall and use

[tex]a^m\times a^n=a^{m+n}[/tex]

[tex]\frac{2^{\frac{11}{2} -7-5}}{ 2^{3+\frac{1}{2} -10}}[/tex]

[tex]\frac{2^{-\frac{13}{2}}}{ 2^{-\frac{13}{2}}}[/tex]

Same bases are dividing, so we write one base and subtract the exponent.

[tex]2^{-\frac{13}{2}+\frac{13}{2}}[/tex]

[tex]2^0=1[/tex]

Answer:

Step-by-step explanation:each bag has 7 flower stickers........I think

we multiplicate 9*5 that is 45

9-2 is seven ,seven flower stickers

Answer:

The answer is 9.

Step-by-step explanation:

If r=32, all you do is plug 32 where the r is

32-23=9 as your answer.

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%. The ­percent of the students who took French is 30%.

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Given that Three-fifths of the students take Spanish, and one-fourth of the remaining students take German. Therefore, the number of students who took french is,

Number of students who took french = 1 - 3/5 - (2/5 × 1/4)

                                                              = 1 -0.6 -0.1

                                                              = 0.3

                                                              = 30%

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Answer: False

Step-by-step explanation:

Answer:

Just substitute values for x in such as 1,2,3,4 and 5 for the both the equations

Step-by-step explanation:

1) Intersection point is at (-1, 2)

3) Intersection point is at (-2,3)

Good luck ^-^

By the way just for the future I'll teach you how to to the problem because it'll be 10x easier for you!

Let's say you have the equation y = -4x - 2

You go 2 down on the y-axis. So place a point on (0, -2)

After that we have -4x which is actually -4/1 which means +1 for the x-axis and -4 on the y-axis!

Which determines our new point to be on (1, -6)

And you just make the lines now or to make it even easier flip (1, -6) to (-1, 6)

That'll make drawing your lines way easier! Good luck ^-^

Answer:

47.1 cm

Step-by-step explanation:

For this problem, I'll use an approximation of [tex]\pi \approx 3.14[/tex], which is good enough for the level of accuracy we need. The definition of π itself is given by the equation

[tex]\pi =\frac{c}{d}[/tex]

where c is the circumference of a circle and d is its diameter. If we want to find the circumference, we can simply multiply both sides of that equation by d to get the formula

[tex]c=\pi d\approx3.14d[/tex]

Here, we're given d = 15 cm, so plugging that in, we find our circumference to be

[tex]c\approx3.14(15)=47.1[/tex]

So the circumference of this circle is approximately 47.1 cm.

Answer: the answer is c. 420

Step-by-step explanation:

this is because

V= L*W*H

SO

V= 12*14*5

But since there is a triangle as the base you divide by 2 or multiply by 1/2

1/2( 12*14*5)= to 420

so the answer is 420

Hoped it helped

make me brainlist

Step-by-step explanation:

F=0.156g

S=0.062g

M=0.0145g

N=g-(F+S+M)

N=g-(0.156g+0.062g+0.0145g)

N=g-0.2325g

N=0.7675g

Camden's net pay is 76.75% of his gross pay

Alternative:

100%-15.6%-6.2%-1.45%=76.75%

Final answer:

To calculate Camden's net pay, you subtract federal withholding, Social Security, and Medicare deductions from his gross pay based on provided percentages. By applying these calculations to an example, Camden's net pay from a $2,000 gross salary over two weeks would be $1,535, after deductions totaling $465.

Explanation:

The calculation of Camden's net pay involves subtracting federal withholding, Social Security, and Medicare deductions from his gross pay. Assuming Camden's gross pay is a certain amount, we'll illustrate how to find the net pay. Let's not forget to account for the percentages provided for each deduction category: 15.6% for federal withholding, 6.2% for Social Security, and 1.45% for Medicare.

Calculate Federal Withholding: Gross Pay * 15.6%.

Calculate Social Security Deduction: Gross Pay * 6.2%.

Calculate Medicare Deduction: Gross Pay * 1.45%.

Add all deductions together: Federal Withholding + Social Security + Medicare.

Subtract the total deductions from the Gross Pay to get the Net Pay.

For example, if Camden's gross pay is $2,000 for two weeks, his deductions would be:

Federal Withholding: $2,000 * 15.6% = $312

Social Security: $2,000 * 6.2% = $124

Medicare: $2,000 * 1.45% = $29

Total Deductions: $312 + $124 + $29 = $465

Net Pay: $2,000 - $465 = $1,535

Answer:

The amount of cardboard Digit Tech needs to

package all 1500 new Smart Phones = 891000 square cm

Step-by-step explanation:

Points to remember:-

Surface area of cuboid

Surface area = 2(lb + bh + lh)

Where, l - Length of cuboid

b - Breadth of cuboid and

h - Height of cuboid

It is given dimensions of cardboard box

12 cm long, 9 cm wide, and 9 cm high.

To find the surface area of box

Here l = 12 cm, b = 9 cm and h = 9 cm

Surface area = 2(lb + bh + lh) = 2[(9*12) + (9*9) + (12 * 9)]

 = 2(108 + 81 + 108) = 2 * 297 = 594 square cm

To find the cardboard required for 1500 box

Total cardboard = 1500 * 594 = 891000 square cm

For this case we have a function of the form [tex]y = h (d)[/tex]. Where:

[tex]h (d) = \frac {4} {9} d + 6 \frac {2} {3}[/tex]

Rewriting the mixed number as a fraction:

[tex]h (d) = \frac {4} {9} d + \frac {3 * 6 + 2} {3}\\h (d) = \frac {4} {9} d + \frac {20} {3}[/tex]

Substituting [tex]d = 3[/tex]:

[tex]h (3) = \frac {4} {9} (3) + \frac {20} {3}\\h (3) = \frac {4} {3} + \frac {20} {3}\\h (3) = \frac {24} {3}\\h (3) = 8[/tex]

ANswer:

Option A

Answer:   b) x = -3, x = 3

Step-by-step explanation:

[tex]g(x) = \dfrac{x-4}{x^2-9}[/tex]

The vertical asymptotes are the restrictions on x, which can be found by finding the x-values that make the denominator equal to zero.

x² - 9 = 0

    x² = 9

    x  = ± 3

Answer:

It is 1/1536

Step-by-step explanation:

You divide 1/512 by three since it is a cube.

Answer:

Mean=12.5

Median=13

Step-by-step explanation:

What you do for the mean is you add all the numbers together to get 75.

You will then divide it by 6 because there are 6 numbers to get 12.5 as your answer.

The median all you do is find the middle number. The middle numbers are 12 and 14. You will take 12 and 14 and add them together to get 26.

You will then divide it by 2 to get 13 as your answer.

The Mean of the data is 12.5 and the Median of the data is 13.

Mean is defined as the ratio of the sum of the number of the data sets to the total number of the data. The mean is calculated by adding all the data and dividing it by the number of the data.

The Median is the middle value of the data set when all the data is arranged in ascending order.

Given data is 2, 7, 12, 14, 19, 21. The mean of the data will be calculated as below:-

Mean = ( 2 + 7 + 12 + 14 + 19 + 21 ) / 6

Mean = 75 / 6 = 12.5

The Median will be calculated as below:-

Median = ( 12 + 14 ) / 2

Median = 26 / 2 = 13

Therefore, the Mean of the data is 12.5 and the Median of the data is 13.

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Answer:

6

Step-by-step explanation:

see attachment

Answer:

The answer is B. 6in.

Hope it helps!!!!!!!

Answer:

Is a consistent independent system

Step-by-step explanation:

we have

[tex]-x-y=7[/tex] -----> isolate the variable y

[tex]y=-x-7[/tex] ----> equation A

[tex]5x-5y=5[/tex] -----> isolate the variable y

[tex]y=x-5[/tex] ---> equation B

Compare equation A and equation B

We can affirm that

The slopes are not equal ( so the lines are not parallel)

The lines are different

The product of their slopes is equal to -1 (the lines are perpendicular)

so

The system of equations has only one solution

therefore

Is a consistent independent system

By analyzing the given equations and rewriting them to compare coefficients, it is clear that the system of equations is independent because they have different slopes and will intersect at exactly one point.

To classify the system of equations as independent, dependent, or inconsistent without graphing, we have to analyze the equations and solve for their relation to each other. The given equations are:

-x - y = 7
5x - 5y = 5

We can start by putting the equations in the same form to compare the coefficients:

Equation 1 can be rewritten as: x + y = -7 (multiply by -1)
Equation 2 can be simplified: x - y = 1 (divide by 5)

The slopes of the lines represented by the two equations are different (they are not multiples of each other) which suggests that the lines will intersect at exactly one point. This means the system of equations is independent.

The distance between the points (6, −3) and (6, 5) is 8 units.

The distance between two points, (x1,y1) and (x2,y2) is calculated by using the distance formula in coordinate geometry.

According to distance formula,

Distance = [tex]\sqrt{(x2 - x1)^{2} + (y2 - y1)^{2} }[/tex]  units.

Given points are (6,-3) and (6,5).

Using the distance formula for calculating the distance -

Distance = [tex]\sqrt{(6 - 6)^{2} + (-3 - 5)^{2} }[/tex] units = [tex]\sqrt{8^{2} }[/tex] units = [tex]8[/tex] units

Therefore, the distance between the points (6, −3) and (6, 5) is 8 units.

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Final answer:

To find the distance between the points (6, -3) and (6, 5), calculate the absolute value of the difference between the y-coordinates, resulting in a distance of 8 units.

Explanation:

The distance between the points (6, −3) and (6, 5) can be found using the distance formula, which is derived from the Pythagorean Theorem. In this particular case, since the x-coordinates of both points are the same, the distance is simply the absolute value of the difference in the y-coordinates.

To calculate the distance (d):
d = |y2 − y1|
d = |5 − (−3)|
d = |5 + 3|
d = |8|
d = 8

Therefore, the distance between the points (6, −3) and (6, 5) is 8 units.

Answer:

Sales tax is an every day example of where percents are used

Step-by-step explanation:

" Percentages " are used for sales tax.

It is a tax which is a consumption tax required to pay to government for every goods.

Formula to calculate sales tax,

Sales tax = Cost of an item × Rate of sales tax

Percentage is defined as the quantity in whole quntity, where the whole quantity is always 100.

It is denoted by the symbol "%"

Example - If someone gets 80% in an exam, this means that he scored 80 out of 100.

Sales tax is an everyday example of where percentages are used.

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