Two angles lie along a straight line. If m∠A is five times the sum of m∠B plus 7.2°, what is m∠B?

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The value of x and y are -3 and 3 respectively as shown in the graph

An equation is an expression that shows how numbers and variables using mathematical operators.

Given the equation:

2x - 3y = -13      (1)

Also:

4x + 2y = -2    (2)

From equation 2:

4x + 2y = -2

2y = -4x - 2

y = -2x - 1

substitute y = -2x - 1 in equation 1:

2x - 3(-2x - 1) = -13

2x + 6x + 3 = -13

8x = -16

x = -2

Put x = -2 in eqn 2:

4(-2) + 2y = -2

-8 + 2y = -2

2y = 6

y = 3

The value of x and y are -3 and 3 respectively

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Answer:

75%

Step-by-step explanation:

99/132=0.75

Answer:

75% of the chairs are red

Step-by-step explanation:

99/132 chairs are red. When divided, that equals 0.75. 0.75 is equivalent to 75%.

===================================================

Explanation:

We have 5 green in the 1st row and 4 green in the 2nd row.

The LCM is 5*4 = 20.

The ratio [tex]6 \text{ yellow} = 5 \text{ green}[/tex] scales up to [tex]24 \text{ yellow} = 20 \text{ green}[/tex] after multiplying both sides by 4.

The ratio [tex]4 \text{ green} = 3 \text{ purple}[/tex] scales up to [tex]20 \text{ green} = 15 \text{ purple}[/tex] after multiplying both sides by 5.

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These set of ratios

[tex]6 \text{ yellow} = 5 \text{ green}\\\\4 \text{ green} = 3 \text{ purple}\\\\[/tex]

scale up to

[tex]24 \text{ yellow} = 20 \text{ green}\\\\20 \text{ green} = 15 \text{ purple}\\\\[/tex]

The key is the "20 green" on each line. This leads to the ratios linking up.

If A = B and B = C, then A = C (transitive property).

So we can say [tex]24 \text{ yellow} = 20 \text{ green} = 15 \text{ purple}\\\\[/tex]

That simplifies to [tex]24 \text{ yellow} = 15 \text{ purple}\\\\[/tex]

We can divide both sides by 3 to get [tex]8 \text{ yellow} = 5 \text{ purple}\\\\[/tex]

--------------

We now have these set of ratios

[tex]8 \text{ yellow} = 5 \text{ purple}\\\\5 \text{ purple} = 2 \text{ red}\\\\[/tex]

Connect those two equations together to get

[tex]8 \text{ yellow} = 2 \text{ red}\\\\[/tex]

Lastly, divide both sides by 4

[tex]4 \text{ yellow} = 1 \text{ red}\\\\[/tex]

Answer:

10*8y2

Step-by-step explanation:

Answer:

If a sample of 99 students is taken from a population of 352 students, the population variance, σ2, is the variance of the entire population, which includes all 352 students. Therefore, the answer is (B) 352.

It's worth noting that the sample of 99 students could be used to estimate the population variance if certain assumptions are met and appropriate statistical methods are used. However, the question specifically asks for the population variance, which refers to the variance of the entire population, not just the sample.

Answer:

If a sample of 99 students is taken from a population of 352 students, the population variance, σ2, is the variance of the heights of all 352 students in the population.

Therefore, the answer is B. 352.

Answer:

65

Step-by-step explanation:

cups per pizza- 13

for 5 pizza- 13×5= 65

think of it this way you eat 2 slices of pizza in an hour, how many will you eat in 6 hours? 2x6 = 12

Answer:

-72

Step-by-step explanation:

Because -32 + (2 - 6)(10). is -72

The probability that Ann will get the Donut Shop pod would be = 2/15

The total number of Keurig pods in the green basket = 15

The number of Donut Shop in the basket = 2

Formula for probability;

= possible outcome/sample space

where;

possible outcome = 2

sample space = 15

Probability = 2/15

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The expression that represents the real-world situation is "p - 8 + 5". It simplifies to "p - 3" and represents the final number of people on the bus.

An expression is a combination of numbers, symbols, and/or operators that represents a quantity, a value, or a computation. Expressions can include variables, which are letters that represent unknown values, and can be manipulated and evaluated using mathematical operations like addition, subtraction, multiplication, and division. Expressions can be simple or complex, and they are used in various areas of mathematics, including algebra, calculus, and geometry, as well as in many other fields such as physics, engineering, and economics.

The expression that represents the real-world situation is:

p - 8 + 5

Explanation:

Initially, there are p people on the bus. Then, 8 people get off, which is represented by the subtraction of 8 from p (p - 8). After that, 5 more people get on the bus, which is represented by adding 5 to p - 8, giving us the final expression: p - 8 + 5. This expression simplifies to p - 3, which represents the final number of people on the bus.

Therefore, The expression that represents the real-world situation is "p - 8 + 5". It simplifies to "p - 3" and represents the final number of people on the bus.

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The area of the irregular shape is 34m²

The area of a shape is the space occupied by the boundary of a plane figures like circles, rectangles, and triangles

The shape above can be divided into three rectangles and the sum of the area of this rectangles is the area of the shape.

Area of rectangle 1

= l× w

= 7×2 = 14 m²

Area of rectangle 2

= l× w

= 5×2 = 10 m²

Area of rectangle 3

= l×w

= 5×2 = 10m²

Therefore , the area of the irregular shape is

14+10+10 = 34m²

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The evaluation of the expression consisting of surds indicates that we get;

(9·x + 42 - 69·√x)/(x - 49)

A surd is a value under a square root sign, which can not be further simplified into fractions or whole numbers.

The expression (9·√x - 6)/(√x + 7), can be simplified by using the rationalization of surds technique as follows;

(9·√x - 6)/(√x + 7) = ((9·√x - 6)/(√x + 7)) × ((√x - 7)/(√x - 7))

(√x + 7) × (√x - 7) = ((√x)² - 7²) = (x - 49)

(9·√x - 6) × (√x + 7) = 9·x + 42 - 69·√x

Therefore; (9·√x - 6)/(√x + 7) = (9·x + 42 - 69·√x)/(x - 49)

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Answer:

Step-by-step explanation:

The total amount of money she spent on books and notebooks is:

2/3x + 1/6x = 5/6*x

Jessica had $30 left, so we can set up an equation:

x - 5/6*x = 30

Simplifying the equation:

1/6*x = 30

x = 180

The equation that represents a quadratic function is option b: [tex]y=3x^2-5x+9[/tex]

What is a quadratic function ?

A quadratic function is a function that can be written in the form of f(x) = [tex]ax^2 + bx + c[/tex] , where a, b, and c are constants, and a is not equal to 0. The graph of a quadratic function is a parabola, which can open upwards or downwards, depending on the sign of the coefficient a.

In option b, we can see that the equation is in the form of [tex]f(x) = 3x^2 - 5x + 9[/tex] , which is a quadratic function. The coefficient of [tex]x^2[/tex] is a non-zero constant (a=3), which means that the graph of this function is a parabola.

Option a is not a quadratic function, as it is in the form of [tex]x=y^2-2y+4[/tex], which is a quadratic equation in terms of y, but not in terms of x.

Option c is a little more complicated, as it contains a radical term. However, if we simplify it, we can see that it is also a quadratic function, in terms of x.

Option d is a linear equation, not a quadratic function, because it does not have an [tex]x^2[/tex] term.

Therefore, the quadratic function is [tex]y=3x^2-5x+9[/tex], option b.

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The probability that either event will occur is given as follows:

P(A or B) = 0.83.

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.

The "or probability" is defined as follows:

P(A or B)=P(A) + P(B) - P(A and B).

From the Venn Diagram, the probabilities of each event are given as follows:

Hence the or probability is given as follows:

P(A or B) = 0.5 + 0.3333 + 0

P(A or B) = 0.83. (rounded to the nearest hundredth).

The Venn diagram is given by the image presented at the end of the answer.

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Answer:

To convert 5.25 to a fraction, we can first note that the decimal represents the number 5 units and 25 hundredths. We can write this as:

5.25 = 5 + 0.25

Next, we can convert the decimal 0.25 to a fraction by recognizing that it is equivalent to 25/100 or 1/4. Therefore:

5.25 = 5 + 1/4

We can then combine the whole number 5 with the fraction 1/4 by finding a common denominator:

5 + 1/4 = 20/4 + 1/4 = 21/4

Therefore, 5.25 as a fraction in simplest form is 21/4.

Answer:

i believe it should be

5 1/4

i apologize if wrong, it depends on the ratio (you didnt include it)

The value of the missing side x is 12. 6

We have that the Pythagorean theorem states that the square of the hypotenuse side is equal to the square of the other two sides.

From the information given, we have that;

(4√5)² = 8² + y²

find the square values

80 = 64 + y²

collect the like terms

y² = 16

y = 4

Also, using the Pythagorean theorem, we have;

x² = 4² + 12²

find the squares and substitute the values

x² = 16 + 144

x² = 160

Find the square root

x = 12. 6

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Gold costs less than platinum per ounce because the slope of the graph for gold is less steeper than that of the chart for platinum. The slope of the graph tells you the unit rate in dollars.

In Mathematics, a steeper slope simply means that the slope of a line is bigger than the slope of another line. This ultimately implies that, a graph with a steeper slope has a greater (faster) rate of change in comparison with another graph.

In Mathematics and Geometry, the slope of any straight line can be determined by using the following mathematical equation;

Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Slope (m) = rise/run

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

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I actually do not know because I am still in grade 6

In Linear equation, The of sales/month (x) has to exceed 25,000 units for Plan A to be superior to Plan B.

What is  linear equation?

An algebraic equation with simply a constant and a first- order( direct) element, similar as y = mx b, where m is the pitch and b is the y- intercept, is known as a linear equation.

                         The below is sometimes appertained to as a" direct equation of two variables," where y and x are the variables. Equations whose variables have a power of one are called direct equations. One illustration with only one variable is where layoff b = 0, where a and b are real values and x is the variable.

Let x be # sales/month:

Plan A:  $2500 + 6%•x

Plab B:  $3000 + 4%•x

For Plan A to be better than Plan B:  Plan A > Plan B

So inequality would be: $2500 + 6%•x > $3000 + 4%•x, then solve for x:

2%•x > $500 or x > $500/0.02

x > 25,000

Therefore, the of sales/month (x) has to exceed 25,000 units for Plan A to be superior to Plan B.

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In Linear equation, The of sales of the month (x) has to exceed 25,000 units for Plan A to be superior to Plan B.

What is  linear equation?

A linear equation is a mathematical equation that describes a straight line in a two-dimensional plane. It is an equation of the form:

y = mx + b.

To solve this system of linear equations, we can use the method of elimination or substitution.

Let x be sales of the month:

Plan A:  $2500 + 6% × x

Plan B:  $3000 + 4% × x

For Plan A to be better than Plan B:  Plan A > Plan B

So inequality would be: $2500 + 6%×x > $3000 + 4%×x

then solve for x:

=> 2500+0.06x > 3000+0.04x

=> 0.06x-0.04x > 3000-2500

=> 0.02x > 500

=> x > 500/0.02

=> x > 25000

Therefore, the of sales of the month (x) has to exceed 25,000 units for Plan A to be superior to Plan B.

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Answer:

The area of the shaded region is 27 units^2.

Step-by-step explanation:

Area of outer square = 6^2 = 36 units^2

Area of inner square = 3^2 = 9 units^2

Area of shaded region

= 36 units^2 - 9 units^2 = 27 units^2

The area of a shaded region in a unit grid can be found either by subtracting the area of unshaded regions from the total grid area or by adding up the areas of identifiable shapes within the shaded region.

To find the area of the shaded region without counting every square, you can use a few different strategies, such as identifying and subtracting the area of unshaded regions from the total grid area, or recognizing and adding together larger, easily countable shapes within the shaded region.

For example, if your grid is 10x10 units, the total area would be 100 square units. If, within that grid, there are 20 unshaded squares, you can subtract this from the total area to find the area of the shaded region. So, 100 total square units - 20 unshaded square units = 80 shaded square units. This approach works best when the number of unshaded squares is relatively small or easily countable.

Alternatively, if the shaded region forms easily identifiable shapes (like a 5x5 square or a 3x10 rectangle), you can add the areas of these shapes together to get the total shaded area. This approach works best when the shaded region forms a few large, simple shapes.

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The relative change from 1995 to 2000 is -63.92%, indicating a decrease in price of approximately 63.92%.

To calculate the relative change from 1995 to 2000, we need to find the difference between the prices in those two years, and then express that difference as a percentage of the price in 1995.

Price in 1995 = $351.94

Price in 2000 = $349.69

Difference = Price in 2000 - Price in 1995

Difference = $349.69 - $351.94

Difference = -$2.25

The negative sign indicates a decrease in price from 1995 to 2000.

Now, we can calculate the relative change as a percentage:

Relative change = (Difference / Price in 1995) * 100

Relative change = (-$2.25 / $351.94) * 100

Relative change = -0.6392 * 100

Relative change = -63.92%

Therefore, the relative change from 1995 to 2000 is -63.92%, indicating a decrease in price of approximately 63.92%.

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Answer:

answer is ( J )

Step-by-step explanation:

The word that would indicate that the course is taught at a faster pace than the other science courses is "accelerated." Therefore, the correct answer is J.

5/6 can be rewritten with a least common denominator of 6 as 10/12.

Fracture is  part of the whole. A fraction consists of two parts, the numerator and the denominator. Numerator: The numerator represents the number  above the fraction bar. For example, for 6/7, 6 is the numerator. Denominator: The denominator shows the number  placed under the fraction bar.  

We can write 5/6 in the lowest common denominator, we need to find the common multiple of 6. The smallest multiple  is 2. So we can write 5/6 with the lowest denominator  6 as follows:

5/6 = (5/6) x (2/2) = 10/12

Therefore, 5/6 can be rewritten as 10/12 with a lowest common denominator of 6.

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Answer:

131072

Step-by-step explanation:

Answer: The answer is 131072.

Step-by-step explanation:

Using a calculator, we find that [tex]2^{17}=\boxed{131072}.[/tex]

When they are at the same altitude, the distance between the planes will be 3962 feet.

Because the air is less dense at high altitudes, planes can fly quicker and consume less fuel. Additionally, at altitudes of 30,000 feet or more, airplanes may steer clear of weather systems, improving the comfort level inside.

The majority of commercial airplanes are permitted to soar as high as 42,000 feet. This upper limit is frequently referred to as a "service ceiling."

The planes will be at the same altitude when t seconds have passed, in which case 25.25t + 2548 = 70.75t,

45.5t = 2548 t = 56 seconds,

and 70.75 * 56 = 3962 feet.

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Answer: Hi! Read the explanation below:

Brainliest?

Step-by-step explanation:

Student 1 correctly started the proof.

To complete the proof using the law of sines, student 1 should use the fact that the sum of angles in a triangle is 180 degrees to obtain an expression for angle C, and then use the fact that the sum of the lengths of the opposite sides of an angle in a triangle is equal to the length of the third side to obtain an expression for side c in terms of sin(A) and sin(B).

Here's the complete proof:

Starting with Student 1's work:

bsin(A) = h

asin(B) = h

Using the fact that the sum of angles in a triangle is 180 degrees:

C = 180 - A - B

Using the fact that the sum of the lengths of the opposite sides of an angle in a triangle is equal to the length of the third side:

a/sin(A) = b/sin(B) = c/sin(C)

Substituting in the expressions for c and sin(C) in terms of sin(A) and sin(B):

a/sin(A) = b/sin(B) = 2h/(sin(A)+sin(B))

Simplifying:

a = 2hsin(A)/(sin(A)+sin(B))

b = 2hsin(B)/(sin(A)+sin(B))

c = 2hsin(C)/(sin(A)+sin(B)) = 2hsin(180-A-B)/(sin(A)+sin(B)) = 2h*sin(A+B)/(sin(A)+sin(B))

Therefore, the law of sines is:

a/sin(A) = b/sin(B) = c/sin(C) = 2h/(sin(A)+sin(B))

The equation of a line that is perpendicular to the line y = –4x + 3 and passes through the point (8, 1) is y = 1/4(x) - 1

In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical equation (formula):

y - y₁ = m(x - x₁)

Where:

Since the equation of this line is perpendicular to the line y = –4x + 3, the slope is given by;

Slope, m = -4

m₁ × m₂ = -1

-4 × m₂ = -1

m₂ = -1/-4

Slope, m₂ = 1/4

At data point (8, 1) and a slope of 1/4, a linear equation for this line can be calculated by using the point-slope form as follows:

y - y₁ = m(x - x₁)

y - 1 = 1/4(x - 8)  

y = 1/4(x) - 1

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Using the inequality rule we know that 11 is greater than -11, (11 > -11).

Mathematical expressions with inequalities are those in which the two sides are not equal.

Contrary to equations, we compare two values in inequality.

Less than (or less than or equal to), greater than (or greater than or equal to), or not equal to signs are used in place of the equal sign.

Two expressions in inequality aren't always equal, which is denoted by the symbols >, <, ≤, or ≥.

So, let's say the inequality equation looks like this: A

Right now, A is valued at

Let p be used to representing the initial number.

P equals 11, so

Let q be used to representing the second number.

Q has a value of -11.

-11 and 11 are both numbers that are greater than zero.

Then, 11 > -11 ... (1)

A has a value of 11 > -11.

Therefore, using the inequality rule we know that 11 is greater than -11, (11 > -11).

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Correct question:
Is 11 greater than, equal to, or less than -11?