Robert needs to cut four shelves from a board that is 2.5 meters long. The second shelf is 18 centimeters longer than twice the length of the first shelf. The third shelf is 12 centimeters shorter than the first shelf. The remaining shelf is 4 centimeters longer than the first shelf. If Robert must use the entire 2.5 meter board for the shelves, what is the length of the second shelf, in centimeters?
Answers
If we call the length of the first shelf x, shelf two is 2x+18, shelf 3 is x-12 and shelf 4 is x+4.
The total length of board is 250cm
the total length of the shelves is 5x+10 and the whole board is used so 5x+10 = 250
5x = 240 (-10 from both sides)
x = 48 (divide both sides by 5)
board 2 is 2x+18
2 x = 96+18
= 114cm
Related Questions
You have accumulated $85,000 in student loans that average 5% interest. You graduate next month and will be paying off the loans over 10 years. Which of the following is most likely to be your monthly payment assuming you pay interest and a portion of the principal each month? a) $37 b) $900 c) $117,500 d) $175,000
Robert needs to cut four shelves from a board that is 2.5 meters long. The second shelf is 18 centimeters longer than twice the length of the first shelf. The third shelf is 12 centimeters shorter than the first The remaining shelf centimeters longer than the first shelf. If Robert must use the entire 2 5 meter board for the shelves. what is the length of the second shelf, in centimeters?
How do you use numerical expressions to solve real-world problems?
Determine whether the two lines are parallel, perpendicular, coinciding, or only intersecting.y = - 3x + 86x + 2y =1Choose the correct answer below.parallelonly intersectingperpendicularcoinciding
B. sec 38°
C. sin 52°
D. sec 142°
Answers
b. quiz
c. quick check
d. test
Which of the following assessment types has the least effect on your overall grade?
a. quick check
b. Quiz
c. sample work submission
d. test
Which resource provides an opportunity to evaluate your readiness for a major assessment?
a. reflection
b. teach let tutorial
c. illustrated glossary
d. Virtual Geoboard
Which resource provides immediate feedback to you and your teacher on your work with problems within a lesson?
a. Online practice
b. Discussion
c. teachlet tutorial
d. Textbook answer key
Answers
1) D - Test
2) C - Sample Work
3) A - Reflection
4) A - Online Practice
Further Explanation
Assessments that have the greatest effect on the overall grade of a student are summative tests. They measure the achievement of students based on the attainment of the learning objectives and given at the end of a chapter or unit. Typically, tests have a bigger portion or coverage, hence, given more weight compared to other assessments.
Quizzes and quick check are fast assessments that are given within the lesson to ensure understanding. They give quick feedback before the class moves on to the next part of the lesson. Discussions are verbal formative assessments that give teachers information about what a student knows or doesn't know. It is also a way to correct any misconceptions or push students more to develop their higher order thinking skills.
Sample work submission is usually not graded but is used as a reflection tool. This allows the student to evaluate his or her progress in the subject.
Students should do a reflection to evaluate their readiness for a major assessment. This self-assessment will give them ideas about what they are good at and what topics they need to focus on.
Immediate feedback may be obtained by online practice. These are usually short and quick assessments that can give a snapshot of what the student knows within the lesson. It is an example of a formative assessment.
Learn More
- Bloom's Taxonomy brainly.com/question/6187029
- Assessments brainly.com/question/12851094
Keywords: assessment, quiz, test, discussion, reflection, quick check
1.D
2.C
3.C
4.A. because it said which resource provides immediate feedback to you and your teacher on your homework.
good luck
Answers
Answer:
198 ft/s speed
99 ft distance
Step-by-step explanation:
Answer:
7.33333ft
Step-by-step explanation:
Answers
The length, to 1 decimal place, of the arc that subtends an angle of 5.4 radians at the center of a circle with a radius of 7 cm is 37.8 cm.
What is a circle?
It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle)
It is given that:
The arc subtends an angle of 5.4 radians at the center of a circle with a radius of 7 cm.
As we know, the relationship between radius of the circle, central angle, and arc length is:
s = rθ
r = 7 cm
θ = 5.4 radians.
When two lines or rays converge at the same point, the measurement between them is called an "Angle."
s = 7×5.4
s = 37.8 cm
Thus, the length, to 1 decimal place, of the arc that subtends an angle of 5.4 radians at the center of a circle with a radius of 7 cm is 37.8 cm.
Learn more about circle here:
#SPJ4
Answer:
37.8
Step-by-step explanation:
Length = radius * Θ
L=7*5.4
L=37.8
If wrong don't report, just notify me so I can edit.
Have a great day!
Answers
Answer:
1 step. multiplayer with 8 and find their sum the difference between the temperature recorded on llllll