3x+y=-2
x-y=-6
Solve for x and y using solve by elimination

Answer:

Step-by-step explanation:

i assume you mean that the mat is 11 feet on each side so

area = s*s(or S^2)

so 11*11=121feet sq

Answer:

difference: -4 cubic inches

% change: -10%

Step-by-step explanation:

The difference between the new volume and the original volume is ...

 (new volume) - (original volume) = (36 in³) - (40 in³) = -4 in²

__

The percentage change is figured with respect to the original volume:

 % change = (difference)/(original volume) × 100% = (-4 in³)/(40 in³) × 100%

 = -1/10 × 100% = -10%

The piecewise function is defined as follows:

A piece-wise function is a function that has different definitions, based on values of the input x of the function.

For this problem, the intervals are given as follows:

For the first interval, the interval is open due to the open circle, and the quadratic function is a translation up 4 units of y = x², hence:

y = x² + 4, x < 2.

For the second interval, which is the closed interval, we have a decaying line with slope of -1 and x-intercept of 4, hence:

y = -x + 4, x ≥ 2.

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Option A is correct, 162 is the greatest number of caps she can buy.

A relationship between two expressions or values that are not equal to each other is called 'inequality.

Let x be the number of caps.

We have been given that cost of one cap is $6, so cost of x caps will be equal to 6x.

We are also told that the company charges an amount of $25 for shipping, so total cost of buying x caps will be equal to the cost of x caps plus shipping charges (6x+25).

Since Laura has a budget of $1,000, so cost of x caps will be less than or equal to 1,000.

We can represent this information in an equation as:

6x+25≤1000

Let us solve for x

Subtract 25 from both sides

6x≤1000-25

6x≤975

Divide both sides by 6

x≤162.5

Hence, Option A is correct, 162 is the greatest number of caps she can buy.

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use the process of elimination, once you solve, it will give you one variable that will work for both equations, once you plug that in, it will give you the other variable.

7x + 3y = 13

2x -3y   = -4

add the "y"; 3y + (-3y) = 0

9x = 9

x = 1

plug in the "x" value into either question to solve for "y"

7(1) + 3y = 13

7 + 3y = 13

3y = 6

y = 2

Answer:

Step-by-step explanation:

7x + 3y = 13

2x -3y   = -4

add the "y"; 3y + (-3y) = 0

9x = 9

x = 1

plug in the "x" value into either question to solve for "y"

7(1) + 3y = 13

7 + 3y = 13

3y = 6

y = 2

The statistical significance does not necessarily imply practical significance. In this case, while the IQ score of 160 is statistically significant, it may not necessarily be practically

To assess whether any of the IQ scores are statistically significantly high or low, we need to calculate the z-score for each score. The formula for calculating the z-score is:

z = (x - μ) / σ

Where x is the IQ score, μ is the mean IQ score, and σ is the standard deviation of IQ scores.

First, we need to calculate the mean and standard deviation of the IQ scores:

Mean = (100 + 90 + 110 + 160 + 90 + 85 + 65 + 100 + 95 + 98) / 10 = 99.3

Standard deviation = √[((100-99.3)² + (90-99.3)² + (110-99.3)² + (160-99.3)² + (90-99.3)² + (85-99.3)² + (65-99.3)² + (100-99.3)² + (95-99.3)² + (98-99.3)²) / 10] = 39.77

Now we can calculate the z-score for each IQ score:

z1 = (100 - 99.3) / 39.77 = 0.018

z2 = (90 - 99.3) / 39.77 = -0.233

z3 = (110 - 99.3) / 39.77 = 0.27

z4 = (160 - 99.3) / 39.77 = 1.53

z5 = (90 - 99.3) / 39.77 = -0.23

z6 = (85 - 99.3) / 39.77 = -0.36

z7 = (65 - 99.3) / 39.77 = -0.86

z8 = (100 - 99.3) / 39.77 = 0.017

z9 = (95 - 99.3) / 39.77 = -0.108

z10 = (98 - 99.3) / 39.77 = 0.032

Using the z-table, we can find the percent of scores below each z-score:

z1 =  0.018 or 70.01%

z2 = -0.233 or 34.67%

z3 = 0.27 or 75.01%

z4 = 1.53 or 83.68%

z5 = -0.23 or 34.67%

z6 = -0.36 or 37.47%

z7 = -0.86 or 45.16%

z8 =  0.017 or 70.01%

z9 = -0.108 or 31.80%

z10 =  0.032 or 69.15%

To determine whether each z-score is statistically significant, we need to compare it to a predetermined level of significance, typically α = 0.05. If the probability associated with the z-score (i.e., the percent of scores below it) is less than or equal to α, we consider the score statistically significant.

Based on this criterion, the only score that is statistically significant is the IQ score of 160 (z-score = 2.29, percent of scores below = 83.68%). All other scores have a probability greater than α, and therefore are not statistically significant.

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The required, two expressions are not equivalent, and Pat's claim is false.

Simplification involves applying rules of arithmetic and algebra to remove unnecessary terms, factors, or operations from an expression.

Here,
a) To show that Pat is wrong, we can substitute p = 3 into both expressions and compare the results:

4 - (p + p + p) = 4 - (3 + 3 + 3) = 4 - 9 = -5

4 - p + p + p = 4 - 3 + 3 + 3 = 7

Since the two expressions have different values when p = 3, Pat's claim is false.

b) Simplifying each expression algebraically, we have:

4 - (p + p + p) = 4 - 3p

4 - p + p + p = 4 + p

Therefore, the two expressions are not equivalent, and Pat's claim is false.

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Step-by-step explanation:

here,

so the correct answer is this

2 times the square root of 48 minus the square root of 3 simplified is 7√3.

what is square root?

The square root of a number is a value that, when multiplied by itself, gives the original number. In other words, it is the inverse operation of squaring a number. For example, the square root of 16 is 4 because 4 multiplied by itself (4 x 4) equals 16.

The symbol used to represent the square root is √. So, the square root of 16 is written as √16.

To simplify this expression, we can first simplify the square root of 48.

We know that 48 can be written as 16 x 3, and since 16 is a perfect square, we can simplify the square root of 48 as follows:

√48 = √(16 x 3) = √16 x √3 = 4√3

Now we can substitute this value into the expression:

2(4√3) - √3 = 8√3 - √3 = 7√3

Therefore, 2 times the square root of 48 minus the square root of 3 simplified is 7√3.

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The value of x will be 12. For the given image.

The arc length formula for a circle is times the radius of a circle. Arc length ( Angle x radius ) is a way to express the arc length formula in radians.

By dividing the arc length by the circle's circumference and multiplying the result by 360 degrees, one can calculate the angle of an arc. 0

To calculate the value of x make the equation below,

x / 4 = 18 / 6

x = ( 18 x 4 ) / 6

x = 12

Therefore, the value of x will be 12.

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The height of the water in the tank after 5 minutes is approximately 732.6 inches.

V = πr²h, where V is a cylinder's volume, r is its radius, and h is its height, is the formula for calculating a cylinder's volume. The formula is created by first determining the area of the cylinder's base, which equals r2, and then multiplying that area by the cylinder's height to determine the volume. The volume of tanks, pipelines, and other cylindrical objects may be calculated using this formula, among many other uses.

The volume of a cylinder, which is:

V = πr²h

Given that, diameter is 15 feet, so the radius is 7.5 feet.

Also,

2 feet per second = 2 * 12 * 60 inches per minute = 1440 inches per minute

V = πr²h

Substituting the values:

V = π(7.5)^2(14405)

Here, 14405 is the amount of water that flows into the tank in 5 minutes.

Divide the volume of water by the area of the base of the cylinder

V/A = h

2,044,123/(π(7.5)^2) ≈ 732.6 inches

Hence, the height of the water in the tank after 5 minutes is approximately 732.6 inches.

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Answer:

I think is D

Step-by-step explanation:

because

R:622 and Y:410

Horizontal cross-sections of the prisms at the same height have the same area.

Option D.

A right rectangular prism is a three-dimensional shape with six faces which are all rectangles. It has twelve edges and eight vertices.

An oblique triangular prism is a prism with 2 congruent triangular faces and 3 rectangular faces at an angle to the triangular faces.

This is the volume of solid figures concept.

The volume of a prism is obtained by multiplying the area of its base to its height. If the two given solid figures have the same volume and the same height then, the areas of their bases are also equal.

In this case, the height of the right rectangular prism and the oblique triangular prism are 12 cm and both prisms have the same volume, we can conclude that:

Horizontal cross-sections of the prisms at the same height have the same area.

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For the equation 75x+30y=1500,  x is (100 - 2y) / 5 and y is (100 - 5x) / 2.

An equation is a mathematical statement that uses symbols and numbers to express a relationship between two or more variables. It states that two expressions are equal to each other.

We can solve for x and y in the equation 75x + 30y = 1500 by using algebraic manipulation.

First, we can simplify the equation by dividing both sides by the greatest common factor of 75 and 30, which is 15:

(75x + 30y) / 15 = 1500 / 15

Simplifying the left side gives:

5x + 2y = 100

Next, we can isolate one of the variables. Let's isolate y by subtracting 5x from both sides:

5x + 2y - 5x = 100 - 5x

Simplifying the left side gives:

2y = 100 - 5x

by dividing both sides by 2:

y = (100 - 5x) / 2

This is the equation for y in terms of x. We can use this equation to solve for y given a value of x, or we can substitute it back into the original equation to solve for x in terms of y.

Let's solve for x in terms of y by isolating x in the equation 5x + 2y = 100:

5x = 100 - 2y

Dividing both sides by 5 gives:

x = (100 - 2y) / 5

This is the equation for x in terms of y. We can use this equation to solve for x given a value of y, or we can substitute it back into the original equation to solve for y in terms of x.

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The  orientation and ratio of the sides of the similar right triangles are  presented as follows;

(a)  ΔZXY ` ΔZYW ~ ΔYXW

(b) ZX/YX =  XY/WX

ZW/ZY =  ZY/ZX

Similar triangles are triangles that have the same shape but may have different  size.

(a) Similar triangles are triangles that have congruent internal angles.

Making use if the angles of the triangle, we get;

∠x ≅ ∠x  (reflexive property of congruency)

∠YZW ≅  ∠YZWX (All 90 degrees angle are congruent)

Therefore; ΔZXY ~ ΔZYW by AA similarity postulate

Similarly; ΔZXY is similar to ΔYXW by AA similarity postulate

The similar triangles are therefore;

(b) The proportion of the corresponding sides of similar triangles are equivalent, and the cosine of an angle in a right  triangle is the ratio of the adjacent side to the hypotenuse side, therefore;

ZX/YX =  XY/WX

The tangent  of an interior angle of a right triangle is the ratio of the opposite side to the adjacent side of the right triangle, therefore;

ZW/ZY =  ZY/ZX

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Answer:

x = 8

Step-by-step explanation:

[tex]15 + x = 23[/tex]

[tex]x = 23 - 15[/tex]

∴[tex]x = 8[/tex]

Answer:

26

Step-by-step explanation:

(6x + 4) + (4x + 6) = 90

180 - (4x + 6) = (6x + 4) + 90

Rearrange the equation.

180 - (-90) = (6x + 4) + (4x + 6)

270 = 6x + 4 + 4x + 6

270 = 10x + 10

260 = 10x

26 = x

I don't know if this is correct, so I apologize if its wrong.

Answer:

x = 8

Step-by-step explanation:

According to the picture,

These given two angles are complementary. That is, those two angles are added up to 90°.

Therefore,

( 6x + 4 ) + ( 4x + 6 ) = 90

Combine like terms.

6x + 4 + 4x + 6 = 90

10x + 10 = 90

Subtract 10 from both sides.

10x = 90 - 10

10x = 80

Divide both sides by 10.

x = 8

b. The distance between points K and L is 10 units.

c. ΔJKL is not an equilateral triangle.

Triangle is defined as a basic polygonal shape of a triangle that has three sides and three interior angles.

Given points as:

J (-5,-3)

K (1,5),

L (7,-3)

b. To determine the distance between points K and L, we can use the distance formula:

distance = √(x₂ – x₁)² + (y₂ – y₁)²

Substituting the coordinates of K and L, we get:

distance = √((7 - 1)² + (-3 - 5)²)

distance = √(36 + 64)

distance = √(100)

distance = 10

Therefore, the distance between points K and L is 10 units.

c. To determine if JKL is an equilateral triangle, we need to check if all three sides have the same length.

We can find the lengths of each side using the distance formula:

JK = √((1 - (-5))² + (5 - (-3))²) = √(6^2 + 8²) = 10

KL = 10 (as we found in part b)

LJ = √((-5 - 7)² + (-3 - (-3))²) = √((-12)²) = 12

Since all three sides have different lengths (JK and KL are 10 units, while LJ is 12 units), JKL is not an equilateral triangle.

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Answer: variable Y, coefficient 11, Constant 4.5

Step-by-step explanation:

variable: Y

coefficient: 11

Constant: 4.5

The area of the trapezoidal flower garden from the dimensions is 123.5 square meters

The trapezoidal flower garden represents the given parameter, where we have the following readings

Parallel sides = 9 m and 10 m

Height = 13 m

Using the above dimensions, we have the area to be

Area = 1/2 * Sum of parallel sides * Height

When the dimensions are substituted, we have

Area = 1/2 * (9 + 10) * 13

Evaluate the products

Area = 123.5

HEnce, the area is 123.5 square meters

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The area of the part that is painted blue is 679 ft.

What are the basic arithmetic operations?

The four basic arithmetic operations are addition, subtraction, multiplication, and division.

Arithmetic operations are the building blocks for all mathematical processes and methods. (Yeah, they’re kind of a big deal!) These types of operations are part of the “arithmetic” branch of math.

Arithmetic operations strip math down to the basics that we use every day, whether we realize it or not. Those basics are addition, subtraction, multiplication, and division.

The area

= 20×30+(1/2)×20×(40-30) -3x5 - 2×3

= boot 10x10- 15-6

= 700-21

= 679

Hence, The area of the part that is painted blue is 679 ft.

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By answering the above question, we may state that So, 5333/10000 of linear equationthe cookies in the cookie jar are oatmeal cookies with nuts.

In algebra, a linear equation is one that of the form y=mx+b. The slope is B, and the y-intercept is m. As y and x are variables, the previous sentence is frequently referred to as a "linear equation with two variables". Bivariate linear equations are linear equations with two variables. Linear equations may be found in many places, including 2x - 3 = 0, 2y = 8, m + 1 = 0, x/2 = 3, x + y = 2, and 3x - y + z = 3. When an equation has the structure y=mx+b, where m denotes the slope and b the y-intercept, it is referred to as being linear. A mathematical equation is said to be linear if its solution has the form y=mx+b, where m stands for the slope and b for the y-intercept.

For the sake of a simple computation, let's say that the cookie jar contains 100 cookies.

The issue states that 4/5 of the cookies in the jar are oatmeal cookies. So,

80 oatmeal cookies are equal to 4/5 * 100.

Two thirds of the oatmeal cookies have nuts in them. So,

2/3 times 80 equals 53.33 oatmeal cookies with nuts (approx)

As a result, the percentage of cookies in the cookie jar that are made with oats and nuts is:

53.33/100 = 0.5333

This is expressed as a fraction:

0.5333 = 5333/10000

So, 5333/10000 of the cookies in the cookie jar are oatmeal cookies with nuts.

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Answer:

(4,2)

Step-by-step explanation:

Based on the information in the graph, we can infer that the length of Main St between 5th Ave. and 6th Ave. is 0.24km.

To find the value of Main St. between 5th Ave. and 6th Ave we must perform the following mathematical procedure:

In accordance with the above, what we did was a relationship between the fractions that represent the length of each street. In this case we had to clear the x that represented Main St. between 5th Ave. and 6th Ave.

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The values of the unknown in the figures are a = 40, b = 32 and c = 275

Figure (a)

A quadrilateral has a total angle measure of 360 degrees.

So, we have

90 - a + 92 + 128 + 90 = 360

Evaluate the like terms

-a = 360 - 400

So, we have

a = 40

Figure (b)

The total measure of angles on a line is 180 degrees.

So, we have the following

4b - 10 + 2b - 2 = 180

Evaluate the like terms

6b = 192

So, we have

b = 32

Figure (c)

The total measure of angles at a point is 360 degrees

So, we have the following

c + 19 + (94 - 28) = 360

Evaluate the like terms

c = 275

Hence, the value of c is 275 degrees

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The total surface area of the given solid is 256 inch²

Surface area is the measure of the total area that the surface of an object occupies. It is usually expressed in square units, such as square meters, square centimeters, or square feet.

Here in this problem take the surface of the solid as the number of faces and calculate the area of each face as shown below.

Here we have

Solid box with dimensions 4 in, 5 in, and 8 in

The surface of the given solid can be divided as given in the picture

The surface area of the shape = Sum of areas of [ 1 to 12 faces ]

Area of (1, 2, 3, 7, 8, 9 faces ) = 6 (4 × 4 )= 96 inch²  

Area of (4, 5, 6, 10, 11, 12 faces ) = 6 (5 × 4) = 120 inch²    

Area of bottom = (8 × 5) = 40 inch²  

Total Surface area = [ 96 + 120 + 40 ] = 256 inch²

Therefore,

The total surface area of the given solid is 256 inch²

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The price after the reduction is 0.72x

From the question, we have the following parameters that can be used in our computation:

Original price = x

Reduction = 28%

Using the above as a guide, we have the following:

Reduced price = Original price * (1 - Reduction)

Substitute the known values in the above equation, so, we have the following representation

Reduced price = x * (1 - 28%)

Evaluate

Reduced price = 0.72x

Hence, the reduced price is 0.72x

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Answer:

Step-by-step explanation:

To solve the equation graphically, we need to first rearrange it into the form of y = f(x). So, let's simplify the given equation:

(x - 3)² - 2 = x + 1

Expanding the left side:

x² - 6x + 9 - 2 = x + 1

Simplifying:

x² - 7x + 6 = 0

Now we can graph the function y = f(x) = x² - 7x + 6 and the line y = x + 1 on the same coordinate axes and find their intersection points.

Here's a graph of the function and the line:

Graph of y=x^2-7x+6 and y=x+1

We can see that the two curves intersect at two points, which have x-coordinates of approximately 1.2 and 5.8. So, the solutions to the equation are x ≈ 1.2 and x ≈ 5.8.

Answer: 8.2 weeks.

Step-by-step explanation: If y = 4*3^t, then 600 = 4*3^t. Therefore, t = log3 (600/4), which is approximately 8.2 weeks.