please be correct :/

Question 12


A recent conference had 750 people in attendance. In one exhibit room of 70 people, there were 18 teachers and 52 principals. What prediction can you make about the number of principals in attendance at the conference?


There were about 193 principals in attendance.

There were about 260 principals in attendance.

There were about 557 principals in attendance.

There were about 680 principals in attendance.


Question 13


A college cafeteria is looking for a new dessert to offer its 4,000 students. The table shows the preference of 225 students.



Ice Cream Candy Cake Pie Cookies

81 9 72 36 27



Which statement is the best prediction about the number of cookies the college will need?

The college will have about 480 students who prefer cookies.

The college will have about 640 students who prefer cookies.

The college will have about 1,280 students who prefer cookies.

The college will have about 1,440 students who prefer cookies.


Question 14


A random sample of 100 middle schoolers were asked about their favorite sport. The following data was collected from the students.



Sport Basketball Baseball Soccer Tennis

Number of Students 17 12 27 44



Which of the following graphs correctly displays the data?

histogram with the title favorite sport and the x axis labeled sport and the y axis labeled number of students, with the first bar labeled basketball going to a value of 17, the second bar labeled baseball going to a value of 12, the third bar labeled soccer going to a value of 27, and the fourth bar labeled tennis going to a value of 44

histogram with the title favorite sport and the x axis labeled sport and the y axis labeled number of students, with the first bar labeled baseball going to a value of 17, the second bar labeled basketball going to a value of 12, the third bar labeled tennis going to a value of 27, and the fourth bar labeled soccer going to a value of 44

bar graph with the title favorite sport and the x axis labeled sport and the y axis labeled number of students, with the first bar labeled basketball going to a value of 17, the second bar labeled baseball going to a value of 12, the third bar labeled soccer going to a value of 27, and the fourth bar labeled tennis going to a value of 44

bar graph with the title favorite sport and the x axis labeled sport and the y axis labeled number of students, with the first bar labeled baseball going to a value of 17, the second bar labeled basketball going to a value of 12, the third bar labeled tennis going to a value of 27, and the fourth bar labeled soccer going to a value of 44


Question 15


The line plots represent data collected on the travel times to school from two groups of 15 students.


A horizontal line starting at 0, with tick marks every two units up to 28. The line is labeled Minutes Traveled. There is one dot above 4, 6, 14, and 28. There are two dots above 10, 12, 18, and 22. There are three dots above 16. The graph is titled Bus 47 Travel Times.


A horizontal line starting at 0, with tick marks every two units up to 28. The line is labeled Minutes Traveled. There is one dot above 8, 9, 18, 20, and 22. There are two dots above 6, 10, 12, 14, and 16. The graph is titled Bus 18 Travel Times.


Compare the data and use the correct measure of center to determine which bus typically has the faster travel time. Round your answer to the nearest whole number, if necessary, and explain your answer.


Bus 18, with a median of 13

Bus 47, with a median of 16

Bus 18, with a mean of 13

Bus 47, with a mean of 16

The variable that you would have to plot on the y axis (height) is the dependent variable while the variable that is on the x axis (arm span) is the independent or the explanatory variable.

The slope was gotten through the use of the points  (37,39) and (19,25)

This gave the slope of 7/9. This tells us that  height of the person got to be raised by 7/9 inches when arm span increases by 1 inch.

From the given model, a person that has the arm span of 66 would have the height of

12 + 7/9 * 66

= 63.3 inches

A person who is  74 inches height the arm span of = 62*9/7

= 79. 71 inches.

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The work required to project a 9oz object initially at rest to 200ft/sec is 22,500 ft-lb.

To find the work required to project a 9 oz object initially at rest to 200 ft/sec, we can use the work-energy principle:

Work = ΔKE = (1/2)mv^2 - (1/2)m0^2

where m is the mass of the object, v is the final velocity, and m0 is the initial velocity (which is zero in this case).

We are given that m = 9 oz, which is equivalent to 0.5625 lb. We are also given that v = 200 ft/sec.

So, plugging in the values:

Work = (1/2)(0.5625 lb)(200 ft/sec)^2 - (1/2)(0.5625 lb)(0 ft/sec)^2

= 22,500 ft-lb

Therefore, the work required to project a 9oz object initially at rest to 200ft/sec is 22,500 ft-lb.

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Answer:

7.4

Step-by-step explanation:

Answer:

Below

Step-by-step explanation:

h = .4 p     <====== given     divide both sides of the equation by .4

h/.4 = p

2.5 h = p       p is 250 % of h    ( 2.5 is decimal for 250%)

The mass of the block is 45.63 cc.

Here, we have,

Given the following data;

Side length of the base = 4.5 cm

Height = 10 cm

To find the volume of pyramid with a square base;

Mathematically, the volume of a pyramid with a square base is given by the formula;

Volume of square-based pyramid = A(h/3)

Where;

A is the area of the square base.

h is the height of the pyramid.

First of all, we would find the area of the square base;

Area of square, A = L²

A = 4.5²

A = 20.25 ft²

Next, we find the volume of the square-based pyramid;

Volume = 20.25(10/3)

Volume = 202.5 /3

Volume = 67.5 cm³

Then the mass of the block is 67.5 cm³ * 0.676 cc/cm³ = 45.63 cc

Hence, the mass of the block is 45.63 cc.

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Explanation:- When they had asked, Round 468986 to the nearest thousand, You should know that :-

Th H T O

4 6 8 9 8 6

So, Here In Thousand place we have 8.

Then see the all numbers after 8 That is :-

8986

So 8986 is nearest to 9000

Therefore, answer will be 469000.

the answer is 469000 hope it help's

Answer:

$60

Step-by-step explanation:

Profit = revenue - total cost

cost is total expenses incurred in running the business

total cost =  cost of rent and the expensive saws and equipment + cost of wood + amount paid to worker

50 + 30 + 10 = 90

revenue is the amount earned from selling the chairs. it is equal to 150

Profit = 150 - 90 = 60

The volume of the given cuboid  which has length 5m, breadth 2m, and heigth 3m is 30 cubic meters.

To find the volume of a cuboid, we multiply its length, breadth, and height. In this case, the length is 5m, breadth is 2m, and height is 3m.

Volume = Length × Breadth × Height

Volume = 5m × 2m × 3m

Volume = 30 cubic meters

Therefore, the volume of the given cuboid is 30 cubic meters.

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Answer: D. 18 + 7

Step-by-step explanation:

If we get 18$ and want to find the TOTAL cost it would be the last one

.

The linear function that represents the relationship is:

\(c = 18n + 7\)

A linear function is modeled by:

\(y(n) = an + b\)

In which:

In this problem:

Thus, the relationship is modeled by:

\(c = 18n + 7\)

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∠g and ∠h are complementary angles and ∠g and ∠h are acute angles are true statements from the given information

Two angles are given.

∠g = (2x-90)°

∠h = (180-2x)°

We have to find the statement which is true about the angles g and h.

If both angles are greater than zero.

Complementary angles add up to 90 degrees

i.e., ∠g and ∠h are complementary if ∠g + ∠h = 90°.

Substituting the given values:

∠g + ∠h

= (2x-90)° + (180-2x)° = 90°

Thus, ∠g and ∠h are complementary angles.

and both the angles are less than 90 degrees so we can tell that angles ∠g and ∠h  are acute.

So the statement ∠g and ∠h are acute angles is also true

Hence, ∠g and ∠h are complementary angles and ∠g and ∠h are acute angles are true statements

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Answer:

24

Step-by-step explanation:

help me just

plz

hmmm

or let me die

Answer: 12 1/2

Step-by-step explanation:

its easy bruh what grade you in this is 6th grade stuff

Answer:

The answer is "287.19"

Step-by-step explanation:

Please find the complete question in the attached file.

\(\alpha=1-0.90=0.10\\\\\frac{\alpha}{2}=0.05\\\\Z=1.64\\\\Marginal \ error=Z \times \frac{\sigma_x}{\sqrt{n}}\\\\n=(\frac{Z \times \sigma_x}{error})^2\\\\n=(\frac{1.64 \times 31}{3})^2\\\\n=287.1895\approx 287.19\)

Answer:

62.75

Step-by-step explanation:

two pairs of shoes 20 each equals 40 bucks plus 14.50 equals 54.50 plus 8.25 equals 62.75

Answer:

H > 2.5

Step-by-step explanation:

Greater = >

Lessthan = <

Equal = =

To sketch the region bounded by the graphs of the equations y = -x^2 + 2x and y = -x^2, we can analyze their properties and find the points of intersection.

Here's a step-by-step approach:

Find the points of intersection:

Set the two equations equal to each other and solve for x:

-x^2 + 2x = -x^2

2x = 0

x = 0

So the two curves intersect at x = 0.

Determine the y-values:

Substitute the x-value into either equation to find the corresponding y-value:

For x = 0:

y = -0^2 + 2(0) = 0

Sketch the curves:

Plot the points (0, 0) on a coordinate plane.

Then, plot the graphs of the equations y = -x^2 + 2x and y = -x^2.

You can choose additional x-values and calculate the corresponding y-values to sketch the curves accurately.

In this case, you can choose x = -1, x = 1, and x = 2.

Using these x-values, calculate the corresponding y-values:

For x = -1:

y = -(-1)^2 + 2(-1) = -1 - 2 = -3

For x = 1:

y = -(1)^2 + 2(1) = -1 + 2 = 1

For x = 2:

y = -(2)^2 + 2(2) = -4 + 4 = 0

Plot these points and connect them to form the curves.

Sketch the region:

Shade the region between the two curves, bounded by the points of intersection and the x-axis.

The sketch of the region bounded by the graphs of the equations y = -x^2 + 2x and y = -x^2 should look like this:

  |            /

3|          /

  |        /

2| __/____

  | /             \

1 |\               \

  | \                \

0|__\___\___\

  -1     0     1      2

The shaded region represents the area enclosed by the curves y = -x^2 + 2x and y = -x^2.

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Answer:

less than, greater than, -7, 4

Hope This Helps!

Answer:

35 feet

Step-by-step explanation:

if 1 inch = 5 feet

if the scale drawing is 7 inches, the width of the deck = 7 x 5 = 35 feet

The economic order quantity (EOQ) for the switch connectors is approximately 97 units.

To determine the economic order quantity (EOQ) for the switch connectors, we can use the following formula:

EOQ = √((2 * Annual Demand * Order Cost) / Holding Cost)

Given the following information:

Annual Demand = 15,400 units

Holding Cost = $24 per unit

Order Cost = $74 per order

Plugging in the values into the formula, we get:

EOQ = √((2 * 15,400 * 74) / 24)

EOQ = √(227,200 / 24)

EOQ = √(9,466.67)

EOQ ≈ 97.28

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Answer:

The answer for your question is 15

Answer:

The Least common multiple of 5 and 3 is 15

The lowest common denominator for 4/21, 3/7, 4/9 is 63.

Lowest common denominator is the lowest number that is divisible by the denominators of the set of fractions.

Step 1:  we will write down the prime factors of all the denominators.

\(21=7^{1} *3^{1}\)

\(7=7^{1}\)

\(9=3*3=3^{2}\)

Step 2 : write down highest power of each prime number.

\(7^{1} ,3^{2}\)

Step 3 : Multiply the values

7x9=63

Therefore , The lowest common denominator for 4/21, 3/7, 4/9 is 63.

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Answer:

y= -3/5x+5

Step-by-step explanation:

im not sure if this is right but i know that perpendicular means opposite so basically just swtich the slope and if its positive make it negative, vice versa

The GCF can be applied to problems requiring the division of something into equal groups or an equal number of groups, as well as problems requiring the simplification of a fraction.

The LCM can be used to solve problems involving the overlap of two activities or something similar, as well as problems involving the addition of two or more fractions with different denominators.

The greatest common factor of two or more integers that are not all zero in mathematics is the largest positive integer that divides each of the integers.

A set's greatest common factor (GCF) is the largest factor that all of the numbers share.

For example, the numbers 12, 20, and 24 all have two common factors: 2 and 4. The greatest is 4, so the GCF of 12, 20, and 24 is 4. The LCM, or smallest common multiple, is the smallest common number or multiple of any two numbers. The least common multiple of 3 and 5 is 15, for example.

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Answer: The slope intercept form equation is y = 25x - 100.

To determine the sum of money Jeff should invest on January 21, 2020, in order to reach $80000 on August 8, 2020, at an annual interest rate of 5%, we need to calculate the present value of the future amount using the time value of money concepts.

We can use the formula for the present value of a future amount to calculate the initial investment required. The formula is:

Present Value = Future Value / (1 + interest rate)^time

In this case, the future value is $80000, the interest rate is 5% per year, and the time period is from January 21, 2020, to August 8, 2020. The time period is approximately 6.5 months or 0.542 years.

Plugging these values into the formula, we have:

Present Value = $80000 / (1 + 0.05)^0.542

Evaluating the expression, we find that the present value is approximately $75609. Therefore, Jeff should invest approximately $75609 on January 21, 2020, to amount to $80000 on August 8, 2020, at a 5% annual interest rate.

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Answer:

Step-by-step explanation:

The experimental probability of the cube landing on three is 1/10.

9514 1404 393

Explanation:

From your knowledge of the world, you know that ...

The problem statement asks for the cost of a single text message. For the purpose of finding that value, it is convenient to represent it using the variable t. The problem statement says Eric was billed for 450 text messages, so we expect his usage-related fee to be 450t, the sum of the costs of 450 messages--using multiplication for the repeated sum.

The problem statement says Eric was billed 12.50 for fixed fees. So, we expect Eric's total bill to be ...

  fixed fees + usage-related fees = 12.50 + 450t

The problem statement says Eric's total bill was 35.00, so we assume that is the sum of the above-listed fees. That is, the two ways to express Eric's total bill are equal.

  12.50 +450t = 35.00

Answer:

Step-by-step explanation: