If 1+1 = x - 7
What is the value of X?

Answer:

69310

Step-by-step explanation:

255*270+460

=68850+460

=69310

A. The solution of  linear equation is (x, y) = (-3, 8).

B. The solution is (x, y) = (3/4, -1).

C. The solution is (x, y) = (-31/8, 3/8).

D. The solution is (x, y) = (55/7, -117/14).

A. 3x - y = -11 --- (1)

-x + y = 5 --- (2)

From equation (2), we can write y = x + 5, and substitute it in equation (1):

3x - (x + 5) = -11

2x = -6

x = -3

Substituting x in equation (2):

-y = -8

y = 8

Therefore, the solution of the system is (x, y) = (-3, 8).

To check the solution, we substitute the values of x and y in the original equations:

3(-3) - 8 = -11 (True)

-(-3) + 8 = 5 (True)

So, the solution is correct.

B. -2y + 3 = 4x + 2 --- (1)

6x + 4y = 1 --- (2)

From equation (1), we can write 4x + 2 = -2y + 3, and substitute it in equation (2):

6x + 4y = 1

6x - 4y = 8 (rearranging)

12x = 9

x = 3/4

Substituting x in equation (1):

-2y + 3 = 4(3/4) + 2

-2y + 3 = 5

-2y = 2

y = -1

Therefore, the solution of the system is (x, y) = (3/4, -1).

To check the solution, we substitute the values of x and y in the original equations:

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

6(3/4) + 4(-1) = 1 (True)

So, the solution is correct.

C. 32y - x = -25 --- (1)

5x = 100 + x - 8y --- (2)

From equation (2), we can write 4x = 100 - 8y, and substitute it in equation (1):

32y - x = -25

32y - (100 - 8y) = -25

40y = 75

y = 3/8

Substituting y in equation (1):

32(3/8) - x = -25

x = -31/8.

Therefore, the solution of the system is (x, y) = (-31/8, 3/8).

To check the solution, we substitute the values of x and y in the original equations:

32(3/8) - (-31/8) = -25 (True)

5(-31/8) = 100 + (-31/8) - 8(3/8) (True)

So, the solution is correct.

D. To solve the system of equations:

2y + 3x = 6 --- (1)

4x + 5y + 20 = 0 --- (2)

We can rearrange equation (2) to isolate one of the variables:

4x + 5y = -20 (subtracting 20 from both sides)

5y = -4x - 20 (subtracting 4x from both sides)

y = (-4/5)x - 4 (dividing both sides by 5)

Substituting this value of y in equation (1):

2((-4/5)x - 4) + 3x = 6

(-8/5)x - 8 + 3x = 6

(-8/5)x + 3x = 14

(-8/5 + 3)x = 14

(-8/5 + 15/5)x = 14

(7/5)x = 14

x = 10

Substituting this value of x in the equation for y:

y = (-4/5)(10) - 4

y = -12.

Therefore, the solution of the system is (x, y) = (10, -12).

To check the solution, we substitute the values of x and y in the original equations:

2(-12) + 3(10) = 6 (True)

4(10) + 5(-12) + 20 = 0 (True)

So, the solution is correct.

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Answer:

y=5

Step-by-step explanation:

the difference between the x coordinates of each point is 6. in order for the slope to simplify to 2/3 the difference in y should be 9.

y=9-4(y coordinates of A)

=5

The difference in scores between Player A and Player B will be 17.

From the information, Player A finished first in a tournament at a golf club with a score of 8, or eight strokes under par. Player B, had a score of +9, or 9 strokes over par.

Therefore, the difference in scores between Player A and Player B will be:

= 9 - (-8)

= 9 + 8

= 17

Therefore, the difference in scores between Player A and Player B will be 17.

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Answer:

d is 4 :))

hope that helped

Answer:

5

Step-by-step explanation:

2d+1=9

2d=8 (one crosses to the other side and becomes minus nine)

so d=4

Answer:

yjjjjyjnmmmmmmmmmmmmmmm

Step-by-step explanation:

yjjjjyjnmmmmmmmmmmmmmmmyjjjjyjnmmmmmmmmmmmmmmmyjjjjyjnmmmmmmmmmmmmmmm

Answer:

m<HGI= 8.32

Step-by-step explanation:

4x+3=7x-1

3=3x-1

4=3x

1.33=x

______________________

4*1.33+3=8.32

i dont know if this is true so mark me on that

i will get it wrong too if it is wrong.

The measure of angle HGI from the given rhombus is 35°.

A rhombus can be defined as a special parallelogram as it fulfills the requirements of a parallelogram, i.e. a quadrilateral with two pairs of parallel sides. In addition to this, a rhombus has all four sides equal just like a square. That is why it is also known as a tilted square. Look at the image below to understand the relationship of rhombus shape with parallelogram and square.

The given quadrilateral FGHI is a rhombus.

In a rhombus, diagonals bisect each other at right angles.

Here, (7x-1)°+(4x+3)°+90°=180°

11x+92=180

11x=88

x=8

Now, 4x+3=35°

So, m∠HGI=35° (Alternate interior angles)

Therefore, the measure of angle HGI is 35°.

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Answer:    192

Step-by-step explanation:

You multiply 6 x 16 x 2

Answer: 2

Step-by-step explanation:

When a^b = c, loga(c) = b

So b^5 = 32 and b is 2

The two numbers that add up to 18 and have the maximum product are 9 and 9.

We want to find two numbers that add up to 18 and that have the maximum product.

If the two numbers are X and Y:

The product is P = X*Y

And the sum must be:

X + Y = 18

Then we can write:

X = 18 - Y

Replacing that in the product we will get:

P = (Y - 18)*Y

So we have a quadratic.

Notice that the zeros are at  Y = 0 and Y = 18, then the maximum is at the vertex Y = (0 + 18)/2 = 9

Then the value of X must be:

X = 18 - 9 = 18 - 9 = 9

The two values are 9.

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The power series expansion of sin²x at x = 0 is given by:

sin²x = 4x² - 32x⁴/3 + 64x⁶/5! - 512x⁸/7! + ...

To find the power series expansion of sin²x at x = 0, we can utilize the identity 2sin(x)cos(x) = sin(2x) and the Maclaurin series expansion of sin(2x).

The Maclaurin series expansion of sin(2x) is given by:

sin(2x) = 2x - (2x)³/3! + (2x)⁵/5! - (2x)⁷/7! + ...

To find sin²x, we square the Maclaurin series of sin(2x) term-by-term:

(sin(2x))² = (2x)² - 2(2x)⁴/3! + (2x)⁶/5! - 2(2x)⁸/7! + ...

Now, let's simplify the expression:

(2x)² = 4x²

(2x)⁴ = 16x⁴

(2x)⁶ = 64x⁶

(2x)⁸ = 256x⁸

Substituting these values back into the expansion:

(sin(2x))² = 4x² - 2(16x⁴)/3! + (64x⁶)/5! - 2(256x⁸)/7! + ...

Simplifying further:

(sin(2x))² = 4x² - 32x⁴/3 + 64x⁶/5! - 512x⁸/7! + ...

This expansion represents sin²x as an infinite sum of terms involving powers of x.

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The difference between the values of the mean and of the median are due to outliers, hence the median should be used as the measure of central tendency.

These measures are defined as follows:

As the mean involves all values, it is prone to outliers. If a data-set has significantly different mean and medians, it is due to outliers or skewness in the distribution, which are two cases in which the median should be used as the measure of central tendency.

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The coordinates of B are (-7,-2).

What do you mean by x and y coordinates?

The x and y coordinates are a component of the x-axis and y-axis in a 2D space in the Cartesian coordinate system. The x and y coordinates for a point in space are expressed as an ordered pair (x, y). The position of the point on the x-axis is shown by the first number, while its location on the y-axis is indicated by the second number.

According to the given data in the question,

if M is the location where line segment AB meets its midpoint.

Then, we will using the midpoint formula,

\((-5,2)=(\frac{-3+x}{2},\frac{6+y}{2})..............(1)\)

Putting the x-coordinates in (1),

\(-5=\frac{-3+x}{2}\\ -10=-3+x\\-10+3=x\\x=-7\)

Similarly, putting the y-coordinates in (1),

\(2=\frac{6+y}{2} \\4=6+y\\4-6=y\\y=-2\)

Hence, the coordinates of B are (-7,-2).

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"The correct option is C." The only expression that is equivalent to log 2 - log 4 is option C: log(2) + log(¹).

The expression "log 2 - log 4" can be simplified using                   logarithmic properties. Specifically, the property states that "log(a) - log(b) = log(a/b)." Applying this property to the given expression, we have "log 2 - log 4 = log(2/4) = log(1/2) = -log(2)."

The expression log 2 - log 4 can be simplified using logarithmic properties. Let's analyze each option:

A. log(¹): This expression is not equivalent to log 2 - log 4. The logarithm of 1 is 0, but it does not cancel out the terms log 2 and log 4.

B. log 1: This expression is equivalent to 0, but it does not cancel out the terms log 2 and log 4.

C. log(2) + log(¹): This expression is equivalent to log 2 + 0, which simplifies to just log 2. It is not equivalent to log 2 - log 4.

D. log 2: This expression is not equivalent to log 2 - log 4. It represents the logarithm of 2, but it does not account for the subtraction of log 4.

Option C, "log(2) + log(¹)," again uses an exponentiation notation without an exponent and is not a valid mathematical expression.

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Answer:

no of science teachers is 20

no of students is 600

ratio=20/600

=20:600

=1:30

pls give me brainliest

The type of relationship that angle a and angle b have is that they are complementary.

A right angle equals the measure of 90 degrees. If two angles equals a right angle, then their sum equals 90 degrees. Complementary angles have a sum of 90 degrees, therefore, if two angles form a right angle, then they are a pair of complementary angles.

In the image given, angle a and angle b form a right angle. Thus, the sum of angle a and angle b equals 90 degrees. This means they are complementary angles.

Therefore, the type of relationship that angle a and angle b have is that they are complementary.

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The Common factor:

a) 2x+6 = 2(x+3)

b) 9x² - 12x = 3x(3x - 4)

Expand and simplify:

a) \((x+3)(x+5) = x^2 + 5x + 3x + 15 = x^2 + 8x + 15\)

b) \((x-6)(x+7) = x^2 + 7x - 6x - 42 = x^2 + x - 42\)

Common factor:

a) 2x+6 = 2(x+3)

b) 9x² - 12x = 3x(3x - 4)

Factorization is the process of expressing a number or equation in terms of its factors, which are integers or individual terms that when combined together generate the original number or expression. This is an essential concept in algebra and number theory.

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Answer:

Chris sells 5 tickets and Mary sells 16 tickets

Step-by-step explanation:

System of Equations

To solve the problem we call:

x = number of tickets sold by Chris

y = number of tickets sold by Mary

They sold a total of 21 tickets, thus:

x + y = 21            [1]

Mary sold adult tickets for $6.50 each and Chris sold student tickets for $4.00 each. The total income was:

4x + 6.5y = 124       [2]

Multiplying [1] by -4:

-4x - 4y = -84            [3]

Adding [2] and [3]:

2.5y = 40

Dividing by 2.5:

y = 40/2.5

y = 16

From [1]

x = 21 - 16 = 5

x = 5

Chris sells 5 tickets and Mary sells 16 tickets

The evaluation of the value of the arithmetic operation based on the place value of the numbers indicates;

1. The number in the thousands place is; 7

The number is od

2. The difference between the predecessor and successor of the set of integers is; 8 - 6 = 2

Arithmetic operations are operations including, addition, subtraction, division and multiplication.

1. The numbers to be added are; 600, 5800, and 685

The sum of the numbers is; 600 + 5800 + 685 = 7085

Therefore, the place value in the thousands place is 7

The last digit of the number 7085 is 5 indicating that the number is an odd number

2. The predecessor of a number is the number that comes before the number.

The successor of the number is the number that comes after the number

The difference between the predecessor and the successor of a number therefore is; n + 1 - (n - 1) = n + 1 - n + 1 = 2

Example; 8 - 6 = 2

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Answer:

The function will have 2 zeroes.

Step-by-step explanation:

To find how many zeroes a quadratic function would have, we would have to look at its discriminant.

The discriminant (written using the capital greek letter Delta) of a quadratic function is defined like so:

\(\text{if }y = ax^2 + bx + c\\\text{then }\Delta = b^2 - 4ac\)

If the discriminant of a function is:
- Greater than 0, then it will have two zeroes.
- Equal to 0, then it will have one zero.
- Less than 0, then it will not have any zeroes.

Since we're given that \(a > 0\) and \(c < 0\), then \(-4ac > 0\), as multiplying two negative numbers results in a positive number.

\(b^2 \geq 0\) for all b, as any number times itself is positive/zero (for the same reason that -4ac is positive).

Therefore, \(b^2 - 4ac > 0\) for all a > 0 and c < 0.
Meaning that the function will have two zeroes.

The difference in volume between the two boxes would be = 156in³

To calculate the difference in volume between the boxes is the find the individual volume of the boxes using the formula ;

Volume = length×width×height.

For box 1 = length = 12in, width = 7¾in, height= 2in

Vol = 12×7¾×2 = 186in³

For box 2; length = 3⅔in, width = 3½in, height= 2⅓in

Volume = 3⅔×3½×2⅓ = 30

The difference = 186-30 = 156in³

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Answer:

t = 1.2, -1.2

Answer:

The answer is A.

Step-by-step explanation:

Because 9-2=7

Answer:

it's A

Step-by-step explanation:

Use the distance formula.

Answer:

What kind are they. All phones are different weights.

Step-by-step explanation:

I have a IPhone 12 and it weighs 5.78 ounces i just weighed it

The three strength training exercises that can be performed by adults at an average fitness level are:

The health benefits of strength training include:

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Answer:

Step-by-step explanation:

x² - 3x - 1 = 0

a = 1, b = -3, c = -1

x₁ = (3 + sqrt(-3² - 4(1(-1))))/(2(1))

x₁ = (3 + sqrt(9 + 4))/2

x₁ = (3 + sqrt(13))/2

x₁ = 3.302...

x₂ = (3 - sqrt(-3² - 4(1(-1))))/(2(1))

x₂ = (3 - sqrt(9 + 4))/2

x₂ = (3 - sqrt(13))/2

x₂ = -0.302...

Gender is categorical nominal, end-of-the-year stock classification is categorical and ordinal, and distance is quantitative and ratio.

Quantitative variables are measured with numbers. Some examples include:

Weight measured in kilos

The distance measured in meters or kilometers

Time measured in seconds or hours

On the other hand, a categorical variable is defined by features, categories, or concepts rather than numbers. Here is an example:

Breeds of dogs: Poodles, Boston Terriers, German shepherds, etc.

Moreover, variables can be classified as:

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Answer:

50(5π + 6) cm²

Step-by-step explanation:

TSA of figure = 1/2 of TSA(Cylinder) + Area of rectangle

= 1/2 of 2πr(h+r) + 20*15

= πr(h+r) + 300

= 10π(15+10) + 300

= 250π + 300 cm²

or 50(5π + 6) cm²

a) The null hypothesis is that there is no difference in the proportion of homeowners using water filters among the three communities. The alternative hypothesis is that at least one community has a different proportion of homeowners using water filters than the other communities.

b) To calculate the expected count for the bottom right cell, we can use the formula:

Expected count = (row total x column total) / grand total

The row total for Community C and the column total for No are both 100, and the grand total is 300. Therefore:

Expected count = (100 x 100) / 300 = 33.33

The expected count of 33.33 for the bottom right cell means that if there were no difference in the proportions of homeowners using water filters among the three communities, we would expect 33.33 of the 100 homeowners in Community C to answer 'No' to the question about water filters.

c) To determine what we can conclude from the Chi-square statistic of 13.22, we need to compare it to the critical value for a Chi-square distribution with (3-1) x (2-1) = 2 degrees of freedom at the desired level of significance. Let's assume a level of significance of 0.05. From a Chi-square distribution table, the critical value with 2 degrees of freedom at 0.05 level of significance is 5.99.

Since 13.22 is greater than 5.99, we can reject the null hypothesis and conclude that there is a significant difference in the proportion of homeowners using water filters among the three communities. However, we cannot determine from this test alone which communities have different proportions of homeowners using water filters. We would need to conduct further tests, such as post-hoc tests, to investigate the specific differences among the communities.