MATHEMATICS MIDDLE SCHOOL

Fun math activity (I need help) for 50 points
Enter the Correct 4 Digit Code (no spaces)
Fun math activity (I need help) for 50 points Enter - 1

Answers

Answer 1
Answer:

Answer:

Q1

142

Q2

59

Q3

28

Q4

62
Answer 2
Answer: Q1 Ans. 46
Q2 Ans. 59
Q3 Ans 8
Q4 Ans 14

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What's the property that justifies my 1st step?
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A plane at an altitude of 20000 feet starts to descend for landing after flying for six hours. The entire flight time was 6 hours 40 minutes. Determine the average rate of descent of the plane
Hungary Hank uses 7 scrambled eggs to make 4 breakfast burritos. How many breakfast burritos does he make with 21 scrambled eggs?

5. Joan asked 30 randomly selected adult restaurant customers about their choice of beverages. 18 customers said coffee is their favorite beverage. If the restaurant serves 200 adult customers per day, estimate the number who will choose coffee to drink.A. 100
B. 110
C. 120
D. 130

6. You are surveying students to find out their opinion of the quality of food served in the school cafeteria. You decide to poll only those students who buy hot lunch on a particular day. Is your sample random? Please explain

Answers

5. If 18 customers out of 30 prefer coffee, we can find the ratio that will be used to estimate how many customers out of 200 will prefer coffee. We can do this by dividing 18 by 30 to give us 0.6. Then, we multiply 200 by 0.6 to give us 120. Therefore, the answer is 120. 

6. No, your sample is not random, as you are only asking how the food is for students that only buy hot lunches. If it was random, you'd be asking any student how the food is, not just specifically one group of people. 
the answer for the first question would be c) 120 

Sam is observing the velocity of a car at different times. After three hours, the velocity of the car is 51 km/h. After five hours, the velocity of the car is 59 km/h.Part A: Write an equation in two variables in the standard form that can be used to describe the velocity of the car at different times. Show your work and define the variables used. (5 points)

Part B: How can you graph the equation obtained in Part A for the first six hours? (5 points)

Answers

It's not obvious here, but you're being asked to find a linear equation for the velocity of the car, given two points on the line that represents this velocity.

Find the slope of the line segment that connects the points (3 hr, 51 km/hr) and (5 hr, 59 km/hr).  Graph this line.  Where does this line intersect the y-axis?  Find the y-value; it's your "y-intercept," b.

Now write the equation:  velocity = (slope of line)*t + b

The units of measurement of "slope of line" must be "km per hour squared," and those of the "y-intercept" must be "km per hour."

Part B:  Start with the y-intercept (calculated above).  Plot it on the vertical axis of your graph.  Now label the horizontal axis in hours:  {0, 1, 2, 3, 4, 5, 6}.  Draw a vertical line through t=6 hours.  It will intercept both the horiz. axis and the sloping line representing the velocity as a function of time.  Show only the part of the graph that extends from t=0 hours to t=6 hours.

6. A rectangular prism has a length of 16 units and a volume of cubic unis Give a possible set of dimensions or he prism

Answers

V = lwh
l is given... l = 16
And V is given... V = 144

so...
144 = 16 * w * h

next
divide by 16 on both sides to find the value the w*h equals

then find the possible values of w and h

What is the equivalent decimal for 1\2

Answers

0.5 is the equivalent decimal for 1/2 
it is 2/4, 4/8, 3/6, 1.5/3 hope that helps and always good luck

A lil help would be nice right now

Answers

Answer:

c

Step-by-step explanation:

when you multiply 25* 7 you get 175 then you divide it by 60 which gives you 2.911 so its 2 hours and 55 min. I hope that was right and that was helpful

Answer:C

25 times 7 = 175

Step-by-step explanation:

an hour = 60 min

175 - 60= 115

115-60= 55

so you have 2 hours and 55 minutes

Marco wants to build house. United Building Company is offering the rate of $15.75 per square foot + an additional conference fee costing $45.99 an hour. American Contracting Company offers a rate of $12.46 per square foot and a $230 flat conferencing fee. If the conference last 4 hours and 15 minutes and the house is 12,226 square feet. How much will it cost for each company? Round to the nearest cent

Answers

Let us take the case of United Building Company First
Rate per square foot = $15.75
Conference fee taken per hour = $45.99
Total conferencing hours = 4 hours and 15 minutes
                                         = 4.15 hours
Total square feet of the house = 12226 square feet
Then
The total cost taken by the company = (15.75 * 12226) + ( 45.99 * 4.15) dollars
                                                            = 192559.5 + 190.86 dollars
                                                            = 192750.36 dollars
So the total amount taken by United Building Company is $192750.36 dollars
Now let us take the case of American Contracting Company
Rate per square foot taken = $12.46
Flat conferencing fee taken = $230
Then
The total cost taken by the company = (12.46 * 12226) + 230
                                                           = 152335.96 + 230 dollars
                                                           = 152565.96 dollars
So the total cost taken by the American Contracting Company is $152565.96.
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