Mei Mei is organizing textbooks on her bookshelf. She has a Spanish textbook, a math textbook, a history textbook, and a writing textbook. How many different ways can she line the textbooks up on her bookshelf?

Answer:

X will equal 30 degrees

Step-by-step explanation:

X will equal 30 degrees due to the rule of corresponding angles and that l1 and l2 are parallel with a transversal intersecting the parallel lines.

The angle of X and the angle of 30 degrees are corresponding angles.

Corresponding angles are equal to each other.

So X will also be 30 degrees.

I hope this answer helped and have a great day!

Answer:

1

Step-by-step explanation:

1g -> 0.00220462 pounds

525g ->1.15743 pounds

           ≈ 1 pounds

Answer:

x=3 c=3

Step-by-step explanation:

How to solve for x is 12 divided by 3 equals 4 so x would equal 3 and C would give you an answer of 3 also if i am correct. 3×3 + 3 = 12

Answer:

THANK YOUUU for those who can't see the image its answer choices B , C , and E

Step-by-step explanation:

By using distance formula, JH=VU=√13 units. Therefore, option B, C and E are the correct answers.

Given that, JH=VU.

The distance formula which is used to find the distance between two points in a two-dimensional plane is also known as the Euclidean distance formula. On 2D plane the distance between two points (x1, y1) and (x2, y2) is Distance = √[(x2-x1)²+(y2-y1)²].

From the triangle UVW, we have V(5, 2) and U(2, 4).

From the triangle JKH, we have J(-5, -3) and H(-3, 0).

Now,

VU = √[(2-5)²+(4-2)²]

= √13 units

JH = √[(-3-(-5))²+(0-(-3))²]

= √[(-3+5)²+(0+3)²]

= √13 units

By using distance formula, JH=VU=√13 units. Therefore, option B, C and E are the correct answers.

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Answer:

21x+35y

Step-by-step explanation:

7*3x+7*5

21x+35y

The equation to predict how many hours, x, the second part of the trip will take is :x = (total distance - distance traveled in the first part) / average speed x = (125 - 75) / 50  x = 1

To predict how many hours, x, the second part of the trip will take, we can use the equation:

x = (total distance - distance traveled in the first part) / average speed

In this case, the total distance of the trip is 125 miles, and the distance traveled in the first part is the product of the average speed and the time taken for the first part, which is 50 miles/hour * 1.5 hours = 75 miles.

Substituting these values into the equation, we have:

x = (125 - 75) / 50

Simplifying the equation, we get:

x = 50 / 50

x = 1

Therefore, the equation to predict how many hours, x, the second part of the trip will take is:

x = (total distance - distance traveled in the first part) / average speed

x = (125 - 75) / 50

x = 1

This means that the second part of the trip will take 1 hour to complete after the bus stops to refuel.

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The probability of getting no blue is 19/100.

Given that an experiment is conducted with a bag of marbles containing 5 red and 2 blue marbles.

The results of a marble being drawn twice and replaced 100 times are shown in the table.

Outcome Frequency = Red, Red 19 Red, Blue 32 Blue, Blue 21 Blue, Red 28

We need to determine the probability of getting no blue.

So, in every event there is a blue marble except the first event =

(red, red) = 19.

So, the probability of not getting a blue marble = 19/100

Therefore, probability of getting no blue is 19/100.

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Answer:

?=83 degrees

Step-by-step explanation:

74+120=194

360-194=166

166÷2=83

You divide by two because it is an inscribed angle, so it will always be half the measure of the arc it is inscribing or enclosing.

A regular polygon is a polygon with all sides and angles congruent. It exhibits symmetry and uniformity in its sides and angles, creating a visually appealing shape.

A polygon with all sides and angles congruent is called a regular polygon. In a regular polygon, all sides have the same length, and all angles have the same measure. This uniformity in the lengths and angles of the polygon's sides and angles gives it a symmetrical and balanced appearance.

Regular polygons are named based on the number of sides they have. Some common examples include the equilateral triangle (3 sides), square (4 sides), pentagon (5 sides), hexagon (6 sides), and so on. The names of regular polygons are derived from Greek or Latin numerical prefixes.

In a regular polygon, each interior angle has the same measure, which can be calculated using the formula:

Interior angle measure = (n-2) * 180 / n

Where n represents the number of sides of the polygon.

The sum of the interior angles of any polygon is given by the formula:

Sum of interior angles = (n-2) * 180 degrees

Regular polygons have several interesting properties. For instance, the

exterior angles of a regular polygon sum up to 360 degrees, and the measure of each exterior angle can be calculated by dividing 360 degrees by the number of sides.

Regular polygons often possess symmetrical properties and are aesthetically pleasing. They are commonly used in design, architecture, and various mathematical applications.

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Answer:100

Step-by-step explanation:

2!2

Answer:

n = 2

Step-by-step explanation:

(6n - 7) + (8n + 2) = 23 (Combine like terms)

14n  - 5 = 23 (Add 5 from both sides)

14n = 28 (divided 14 from both sides)

n = 2

Answer:

1

Step-by-step explanation:

its in the picture

i need brainliest for level up please

Answer:

37b^5

Step-by-step explanation:

15b^5+22b^5

Combine the all like terms.

Since both of the numbers have b^5, all you have to do is add 15+22.

Answer:

$27.09 in all

Step-by-step explanation:

$1.29 × 16.5 = $21.285

$1.29 × 4.5 = $5.805

$21.285 + $5.805 = $27.09

Answer: B

Step-by-step explanation:

No, the Large counts conditio is not met

The correct option is that, No, the Large Counts Condition is not met.

Conditions for inference are the three conditions on a mean are randomness, whether it is normal distribution and the independence of the test.

Given that,

The reporter selects a random sample of 50 American adults and finds that 28 are unable to name the current vice president.

So the sample is random.

10% condition is also met since the sample size is 50, which must be less than 10% of the total population.

So the 10% condition is also met.

Large counts condition is the condition which requires the sample size to be large enough for the distribution to be approximately normal.

So, the large counts condition is not met.

Hence the correct option is that condition of inference is not met since the Large Counts Condition is not met.

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To find: time take for a train to complete a journey of 550km, hence can use the formula:

distance = speed × time
time = Speed/distance

Given,

The distance to be covered: 550km

Speed of the train is:  300km/6 hours

To find the time it will take for a train complete a journey of 550km, we can set the distance to 550km and the speed to 300km/6 hours and solve for time:

Distance = Speed * Time

550km = (300km/6 hours) × time

time = 550km / (300km/6 hours)

time = 550km * 6 hours / 300km

Answer: It will take the train 11 hours to complete a journey of 550km.

Speed- Distance concept:
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Among the profitability measures listed, the "Discounted payback period" does not account for the time value of money.

The time value of money refers to the concept that the value of money changes over time due to factors such as inflation, opportunity cost, and the potential to earn returns on investments. When evaluating the profitability of an investment or project, it is essential to consider the time value of money.

The "Net Present Value" (NPV) and "Cumulative Cash Flow" are both measures that explicitly account for the time value of money. NPV calculates the present value of all cash inflows and outflows associated with an investment, considering the discount rate, which represents the opportunity cost of investing in the project. Cumulative Cash Flow takes into account the cash inflows and outflows over time, reflecting the timing and magnitude of cash flows.

However, the "Discounted payback period" does not incorporate the time value of money. It measures the time required for an investment to recover its initial cost, considering discounted cash flows. However, it does not account for the opportunity cost of money or the present value of cash flows.

In summary, while Net Present Value and Cumulative Cash Flow account for the time value of money, the Discounted payback period does not.

Which of the following profitability measures does not account for the time value of money?

a) Discounted payback period

b) Net present value

c) Cumulative cash flow

d) All of these account for the time value of money.

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Answer:

400km:8hr

xkm:15hr

(15×400)/8=x

6000/8=x

x=750

The line that intersects a circle at exactly one point and creates a right angle to the radius is called the Tangent .

What is Tangent ?

The tangent can be defined as a line that touches the circle at exactly one point .

The properties of tangent Lines are :

(i) The point where tangent line meets circle is called as the point of tangency.

(ii) The tangent line is perpendicular to the radius of circle, with which it intersects, that means , a right angle is created at the meeting point .

(iii) There is exactly one tangent  that can touch the circle at any given point .

Therefore , by the property of tangent to circle , we can say that , Tangent intersects a circle at exactly one point creates right angle to radius .

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The measure of the angle between the end of the shadow and the vertical side of the building is approximately 71 degrees.

Given the building is 290 feet tall and casts a 100 foot shadow.

Let x be the angle formed between the end of the shadow and the vertical side of the building.

Therefore, we can construct the following diagram;

From the diagram;

The tangent function relates the angle and the opposite side of a right triangle.

Therefore;

Tangent = opposite/adjacent

Tangent x = opposite/adjacent

Tangent x = 290/100

We can now take the inverse tangent of both sides;

x = tan^-1 (290/100)

x = 71.57 degrees, correct to two decimal places.

Therefore, the measure of the angle between the end of the shadow and the vertical side of the building is approximately 71 degrees.

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A: The equation you can use to find out how much Preston earns per hour is y=13.75x

B: He earned $13.75 in one hour.

What is unit rate?

A unit rate is the cost for only one of anything. This is expressed as a ratio with a denominator of 1. For instance, if you covered 70 yards in 10 seconds, you did so at an average speed of 7 yards per second. Although both of the ratios—70 yards in 10 seconds and 7 yards in one second—are rates, only the latter is a unit rate.

PART A:

2. 4 hours.------->  $33

1 hour------->  $33/2.4 =  $13.75

Let y be the amount and x be the hours.

The equation is y=13.75x

PART B

x=1 hour,

y=13.75x  

=> y=13.75 * 1 = $13.75

He earned 13.75 in one hour.

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To prove triangles ACB and ECD to be congruent using SAA we need

A. Both ∠B and ∠D need to be congruent and ∠A and ∠E need to be congruent.

As given in the question,

In the triangle ACB and ECD,

Given : AC ≅ EC

            ∠ACB ≅∠ECD

To prove triangles to be congruent using SAA.

Two angles need to be congruent.

∠B ≅ ∠D

∠A ≅ ∠E

Therefore, to prove triangles ACB and ECD to be congruent using SAA we need

A. Both ∠B and ∠D need to be congruent and ∠A and ∠E need to be congruent.

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Answer:

Its 22 squared feet

Step-by-step explanation:

you multiply everything and then divide by 1/2 because it's a triangle, so you would use the equation for that.

Answer:

the first one

Step-by-step explanation:

Answer:

StartFraction 2 Over h EndFraction = StartFraction 3 Over m EndFraction

StartFraction 2 Over n EndFraction = StartFraction 3 Over h EndFraction

StartFraction 2 Over h EndFraction = StartFraction h Over n EndFraction

Startfraction 2 Over h EndFraction = StartFraction h Over 3 EndFraction

Step-by-step explanation:

Answer:

It's D

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

To obtain the inverse, rearrange the relation making x the subject

y = x² + 4 ( subtract 4 from both sides )

y - 4 = x² , or

x² = y - 4 ( take square root of both sides )

x = ± \(\sqrt{y-4}\)

Change y into terms of x with x = \(f^{-1}\) (x) , that is

\(f^{-1}\) (x) = ± \(\sqrt{x-4}\) → a

Since we have an even amount of numbers here, the median is going to be the average of the two middle values, in this case:

(2a-1+a+7)/2 = 17

(3a +6)/2 = 17

3a + 6 = 34

3a = 28

a = 9\(\frac{1}{3}\)

Answer:

-4y - 7

Step-by-step explanation:

I don't need one because I was doing math pages and this one was on there :)

An equivalent expression for the given expression is -4y-7.

The given expression is -4y -4+(-3).

We need to combine the like terms to create an equivalent expression for the given expression.

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value(s) for the variable(s).

Now,  -4y -4+(-3)= -4y -4-3=-4y-7.

Therefore, an equivalent expression for the given expression is -4y-7.

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Answer:

Comparing quantities

profit loss

cost price selling price.....