Mathematics Middle School

A builder uses the rule "Multiply the number of trusses needed by 50 to get the length of a roof." If 8 trusses are needed to build a roof of length 400 inches and 10 trusses are need to build a roof of length 500 inches, how many trusses are needed to build a roof of length 250 inches?

A.
4 trusses

B.
5 trusses

C.
6 trusses

D.
7 trusses

Answers

Answer 1

B. (5 trusses)

Following the rule you need to multiply by 50 to get the length of the roof and 5 • 50 = 250

Answer 2

5 is correct I am college student

Related Questions

Which equation is a point slope form for line AB?

Answers

Answer:

Step-by-step explanation:

The first one.
A is the answer

All students in Ridgewood Junior High School either get their lunch in the school cafeteria or brought it from home on Tuesday. 2% of students brought their lunch. 50 students brought their lunch. How many students in total are in Ridgewood Junior High School?
Multiply/scale up to solve.

Answers

Answer:

2% can be written as 0.02
So the total amount of kids multiplied by 0.02 is 50

Then 50 divided by 0.02 is 2500 which is the total amount of kids at the school.

Hope this helps!
-brainliest would be nice

The answer is 2% can be written as 0.02
So the total amount of kids multiplied by 0.02 is 50
Then 50 divided by 0.02 is 2500 which is the total amount of kids at the school.

How would the area model in problem 1 need to change if the factor was changed to 12.3 and please stop watching help answer

Answers

Answer:

The answer is in the picture!!!!

Step-by-step explanation:

Please mark as brainliest! have a good day Piccola!!!

-leeknowishawt

that looks very hard

Estimate: 28.3 x 3.45.
i've been asking questions almost all day

Answers

Answer:97.635

Step-by-step explanation:

Estimate: We can round down/up some numbers to make this simpler.
28.3 can be rounded up to 30
3.45 can be rounded down to 3
30*3 = 90

Real answer: 97.635

Question

Quality control finds on average that 0.045% of the items from a certain factory are defective. One month, 4500 items are checked.

How many items are expected to be defective?

Round your answer to the nearest whole number.

1 item
2 items
12 items
20 items

Answers

B because .045% of 4,500 is 2

2 items is the answer

would the expanded form of 3(t-2) be 3t-5?

Answers

Answer: 3t-6

Step-by-step explanation:

3(t-2)

3•t=3t

3•-2=-6

3(t-2) you would distribute the 3 to t and -2 so the answer should be 3t-6

A group of students was surveyed in a middle school class. They were asked how many hours they work on math homework each week. The results from the survey were recorded.

Number of hours Total number of students
0 1
1 3
2 2
3 5
4 9
5 7
6 3

Determine the probability that a student studied for 5 hours.

23.0
0.70
0.23
0.16

Answers

The probability that a student studied for 5 hours is 0.23 Or 23%.

What is probability?

Probability is the chance of occurrence of a certain event out of the total no. of events that can occur in a given context.

A table is given where the first column represents the number of hours a student studied maths and the second column represents the number of students.

The sum of the second column is 30 so it is the total number of students

And only 7 of them studied mathematics for 5 hours.

Therefore, The probability that a student studied for 5 hours is,

= 7/30.

= 0.23 or 23%.

learn more about probability here :

https://brainly.com/question/743546

#SPJ2

Don’t have to give the right answer but WHO WANTS A FRIENDDDD:DD

Calvin saw 311 dogs at the walking park. His brother counted 5 times more squirrels than dogs. How many squirrels did his brother see

Answers

1,555 because 311x5 you're welcome

Answer: 1555 squirrels.

Step-by-step explanation:

311x5

Thanks for the points! I don't mind being a friend of yours!

Ricardo’s goal was to run 40 laps. At the end of the week, he ran 125% of his goal. How many laps is that?

Answers

Answer: He ran 50 laps.

Step-by-step explanation:

40 x 1.25 = 50

Answer:

Step-by-step explanation:

40/1 = 100/1

125% = 100/100 + 25/100

25% of 40 = 10

so you have the 40 laps which equal 100% and you also have 25 percent of the from the 125% and 25 percent of 40 is 10 so the answer is 40 plus 10 wich is 50

Hope this helps

Which line is a linear model for the data?

A (first photo)
B (2nd photo)
C (3rd photo)
D (4th photo)

Help please!

Answers

Answer:

c (point ends touching x-55 and y-110)

C line hit most of the points on the graph along with it hitting x-55 and y-110 at the end

Chris sells beaded necklaces. Each large necklace sells for 5.90 and each small necklace sells for 5.10.How much will he earn from selling 5 large necklaces and 1 small necklace?

Answers

Answer: it will cost $34.60

Step-by-step explanation:

multiply 5.90 by 5

and add 5.10

Answer: $34.60 dollars.
Explanation: 5 x 5.90 = 29.50 + 5.10 which equals a total of $34.60

How is the graphed system of equations classified? Drag and drop words into the boxes to correctly complete the statements.

A system that has no solution is classified as ____.
A system with one and only one solution is classified as ____.
The system of equations graphed is ____ and ____.

Independent Dependent Inconsistent Consistent

Answers

Answer:

A system that has no solution is classified as consistent.

A system with one and only one solution is classified as inconsistent.

The system of equations graphed is independent and dependent.

Answer: A system that has no solution is classified as inconsistent. A system with one and only one solution is classified as independent. The system of equations graphed is independent and consistent.

Step-by-step explanation: I took the test and I did the other persons answers and got it wrong but these were the right answers.

Translate the following inequality into written language. 5x - 6 < 14

Answers

Answer:

6 subtracted from 5 times a number is less than 14.

Step-by-step explanation:

Let x be "a number"

Given inequality:

5x - 6 < 14

< is used for less than.

So, we can write as:

6 subtracted from 5 times a number is less than 14.

[tex]\rule[225]{225}{2}[/tex]

6 subtracted from 5 times is a number less than 14

Fishing Adventures rents small fishing boats to tourists for day-long fishing trips. Each boat can only carry 1200 pounds of people and gear for safety reasons. Assume the average weight of a person is 150 pounds. Each group will require 200 Ibs of gear for the boat plus 10 lbs of gear for each person. Create an inequality describing the restrictions on the number of people possible in a rented boat. Graph the solution set on a number line.

Answers

Answer:

To write an inequality that illustrates the weight limit for a group of adults and children on the fishing boat, let's assume that the letter a corresponds to the number of adults and the letter c corresponds to the number of children.

So, let's calculate:

The total weight on the boat by people corresponds to:

Now, let's add 200 pounds of equipment to this amount, and remembering that the total weight cannot exceed 1200 pounds, so we will find the following inequality:

Or else:

The next step is to calculate the inequality for the passenger limit, remembering that this number cannot exceed 8:

Thus, we find a system of linear inequalities:

In order to be able to answer which of the groups can safely rent a boat, we will make the following calculations substituting the values in the inequalities found.

Group A has 4 adults and 2 children:

Group B has 3 adults and 5 children:

Group C has 8 adults and 0 children:

Step-by-step explanation:

easy

that looks very interesting

Please help!!!! I don't know how to do this, and we have a test tomorrow! Please explain how you got the answer.!

Answers

ANSWER:-

Yes,

There is a direct proportional relationship

between the cost of items before tax and the

cost of items after tax.

5.0

STEP-BY-STEP EXPLANATION:-

Given - A city has a 5% sales tax.

To find - Is there a proportional relationship

between the cost of items

before tax and the cost of items after

tax?

PROOF:-

Yes, the cost of items before tax is directly

proportional to the cost of items after tax.

REASON:-

With the increase in the sales tax, there is

increase in the cost of items after tax, therefore,

there is a direct relation between the cost of items

before tax and cost of items after tax

(2.0 × 10^0) × (6.0 × 10^5) Scientific Notation

Answers

= 1.2 × 10^6 this is the answer in Scientific notation no need to say thank u just get ya work done love

1.2 x 10*6 to the power <3

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