AnswersFL-1205040-MJ Grade 7 Mathematics B-CRCumulative Exam

Cumulative Exam — Cumulative exam Answers

41 verified answers
41
Free Preview

What is the value of x in the equation ?

Question illustration
A
–50
B
–40
C
–8
D
–6
42
Free Preview

What is the total surface area of the square pyramid below?

Question illustration
A
100 cm2
B
200 cm2
C
280 cm2
D
380 cm2
43

Rhonda manages wildlife samples for Ducks Unlimited. Two samples of duck populations at a migratory site are shown in the table below. Which statement about the samples is true?Duck Pond SamplesSample 1Sample 2Mallard19Mallard38Wood Duck3Wood Duck1Green Wing Teal10Green Wing Teal1American Widgeon8American Widgeon0

A
Rhonda needs to continue taking samples of ducks until both samples have at least one of each type of duck.
B
Rhonda should take a third sample and then use the two that are most representative since these samples vary quite a bit.
C
Rhonda should use both of these samples as they are to make inferences about the average population of each type of duck in the pond.
D
Both samples must be biased because there are more Mallards than any other type of duck recorded in the sample.
44

A survey of a group of seventh graders and a group of teachers at a local middle school asked how many siblings they each have. The dot plots below show the results.StudentsTeachersBased on the shape of the two dot plots, which statements correctly compare them? Select three choices.

Question illustration
A
The center of the data for students has a value less than that of the center of the data for teachers.
B
The center of the data is to the right of the dot plot for both teachers and students.
C
There is a greater variation in the data for teachers than for students.
D
Both sets of data cluster around 2.
E
The same number of teachers as students were surveyed.
45

At the beach, Nardia collected triple the number of seashells that Pierre did. Together, they collected 52 seashells. Which equations represents p, the number of seashells that Pierre collected.

A
3 p + p = 52
Option A
B
3 + p = 52
Option B
C
52 + p = 3 p
Option C
D
52 + p = 3
Option D
46

Rhonda manages wildlife samples for Ducks Unlimited. Two samples of duck populations at a migratory site are shown in the table below. Which statement about the samples is true?Duck Pond SamplesSample 1Sample 2Mallard19Mallard38Wood Duck3Wood Duck1Green Wing Teal10Green Wing Teal1American Widgeon8American Widgeon0

A
Rhonda needs to continue taking samples of ducks until both samples have at least one of each type of duck.
B
Rhonda should take a third sample and then use the two that are most representative since these samples vary quite a bit.
C
Rhonda should use both of these samples as they are to make inferences about the average population of each type of duck in the pond.
D
Both samples must be biased because there are more Mallards than any other type of duck recorded in the sample.
47

Which figure has two circular faces?

Question illustration
A
figure A
B
figure B
C
figure C
D
figure D
48

The school band is ordering health bars to sell for a fundraiser. The company that sells the bars charges $0.40 per bar plus $20.00 for shipping regardless of the size of the order. The band must spend less than $200.00 on bars for the fundraiser. The inequality below relates x, the number of bars that could be ordered, with the shipping costs and their spending requirements.Which best describes the number of bars the band can order?

Question illustration
A
They can order from 0 to 449 bars, but no more.
B
They can order from 0 to 450 bars, but no more.
C
Their order must contain 451 bars or more.
D
Their order must contain 452 bars or more.
49

Out of a population of 1,500 students, 100 were asked by a random sampling to choose their favorite national park. Their responses are shown in the table below.National ParksFavorite ParkNumber of StudentsAcadia19Carlsbad Caverns14Rocky Mountain30Grand Canyon23Yosemite14Using proportional reasoning, about how many students out of the 1,500 would you expect to pick Yosemite for their favorite national park?

A
14
B
86
C
210
D
244
50

What is the area of this composite figure?

Question illustration
A
8,250 millimeters squared
Option A
B
9,900 millimeters squared
Option B
C
11,550 millimeters squared
Option C
D
19,800 millimeters squared
Option D

Did you find these answers helpful?

More from this Course

Quiz
9 verified answers

Angle Relationships

Quiz
25 verified answers

Unit Test

Quiz
20 verified answers

Unit Test