Let f(x) = ax + b, and f(1) = 5 and f(2) = 12, then what are the values of a and b respectively ?
Anonymous Quiz
59%
7 and -2
23%
-2 and 7
11%
1 and 4
7%
-1 and 6
Which of the following defines density?
Anonymous Quiz
84%
It is mass per volume.
11%
It is the difference between mass and volume.
2%
It is the sum of mass and volume.
3%
It is the product of mass and volume.
❤7👏1
She usually ____ her parents. They love her very much.
Anonymous Quiz
15%
help
71%
helps
9%
helped
5%
is helping
👍6
Cars ___ by the factory every day.
Anonymous Quiz
24%
produce
22%
produces
16%
is produced
39%
are produced
🥰5❤2🙏1
Hordoftoonni Amantii Kiristaanaa marti Baga Ayyaana Qilleettiin isin Gahe!
Ayyaanni kun kan
_nageenyaa
_Milkaa'ina fi
Kan Gammachuu isiniif haa ta'u!!!
Ayyaana Gaarii!!!!
Happy Christmas!!!
Ayyaanni kun kan
_nageenyaa
_Milkaa'ina fi
Kan Gammachuu isiniif haa ta'u!!!
Ayyaana Gaarii!!!!
Happy Christmas!!!
❤6🥰2
The element with atomic number 35 belongs to:
Anonymous Quiz
8%
s-block
49%
p-block
34%
d-block
9%
f-block
🔥3❤2🙏1
Which technique is most commonly used to obtain isolated bacterial colonies?
Anonymous Quiz
15%
Pour Plate Method
45%
Spread Plate Method
23%
Streak Plate Method
17%
Enrichment Culture
❤4🙏3🥰1🤔1
Math's Grade 12 Unit 3
#5 Mcq with answer
1. Which statement about random sampling is FALSE?
A) It minimizes investigator bias.
B) It ensures proportional representation of subgroups.
C) It requires careful planning.
D) It applies to any population type.
2. If a new value equal to the mean is added to a dataset, which statement is true?
A) Mean increases, standard deviation decreases.
B) Mean stays the same, standard deviation decreases.
C) Mean stays the same, standard deviation increases.
D) Mean and standard deviation remain unchanged.
3. In a distribution where Mean = 12, Median = 14, Mode = 16, the skewness is:
A) Positively skewed
B) Symmetrical
C) Negatively skewed
D) Not determinable
4. If all values in a dataset are multiplied by 3, the variance becomes:
A) 3 times the original
B) 9 times the original
C) Unchanged
D) √3 times the original
5. Which sampling method divides the population into homogeneous subgroups?
A) Simple random sampling
B) Cluster sampling
C) Stratified sampling
D) Systematic sampling
Answer
1. B
2. B
3. C
4. B
5. C
@maths_group11
@maths_group11
#5 Mcq with answer
1. Which statement about random sampling is FALSE?
A) It minimizes investigator bias.
B) It ensures proportional representation of subgroups.
C) It requires careful planning.
D) It applies to any population type.
2. If a new value equal to the mean is added to a dataset, which statement is true?
A) Mean increases, standard deviation decreases.
B) Mean stays the same, standard deviation decreases.
C) Mean stays the same, standard deviation increases.
D) Mean and standard deviation remain unchanged.
3. In a distribution where Mean = 12, Median = 14, Mode = 16, the skewness is:
A) Positively skewed
B) Symmetrical
C) Negatively skewed
D) Not determinable
4. If all values in a dataset are multiplied by 3, the variance becomes:
A) 3 times the original
B) 9 times the original
C) Unchanged
D) √3 times the original
5. Which sampling method divides the population into homogeneous subgroups?
A) Simple random sampling
B) Cluster sampling
C) Stratified sampling
D) Systematic sampling
Answer
2. B
3. C
4. B
5. C
@maths_group11
@maths_group11
❤7
For the relation {(1, 2), (2, 3), (3, 4), (4, 5), (5, 6)}, then what is the domain of the given relation?
Anonymous Quiz
81%
{1, 2, 3, 4, 5}
8%
{2, 3, 4, 5}
10%
{2, 3, 4, 5, 6}
2%
{1, 3, 4, 5, 6}
❤2
If the domain of the relation R = {(x, y): y= x + 3} is A = {1, 2, 3, 4} then what is the range of R?
Anonymous Quiz
9%
{1, 2, 3, 4}
79%
{4, 5, 6, 7}
10%
{2, 6, 8, 10}
2%
{3, 5, 7, 9}
❤3👍2
Let R = {(x, y): x, y an element of {1, 2, 3, 4, 5} and y = 2x - 1} then what is the range of R?
Anonymous Quiz
10%
{1, 2, 3, 4, 5}
20%
{1, 3, 5}
64%
{1, 3, 5, 7, 9}
7%
{7, 9}
❤5🤔1
Let f = {(1, 2), (2, 3), (5, 6), (7, 8)} then what is the value of f(2) + f(5) ?
Anonymous Quiz
4%
6
10%
3
71%
9
15%
18
❤4🥰1
Let f(x) = 2x + 1 and g(x) = -3x - 4 then what is f+g ?
Anonymous Quiz
8%
-3x - 3
74%
-x - 3
14%
x - 3
4%
-x + 3
Let f(x) = x + 3 and g(x) = 2x - 3 then what is the value of (2f + 3g)(1) ?
Anonymous Quiz
62%
5
20%
-5
10%
-15
9%
15
1. One of the following was feature of the reign of Tewodros II (1855-1868)?
Anonymous Quiz
21%
A. The only challenge came from Menelik of Shewan
42%
B. Church-state conflicts
27%
C. Politically united and peace full state
10%
D. The regional lords exercised full authority
❤3
2. The battle of Embabo in 1882 was fought between Emperor Menelik II and Tekle
Haymanot while the battle of Dogali in 1887 was fought between ------------and -----------
Haymanot while the battle of Dogali in 1887 was fought between ------------and -----------
Anonymous Quiz
21%
A. Italy troops and Menelik II troops.
23%
B. Ras Alula and Italy troops
44%
C. Yohannis IV troops and Egypt troops
13%
D. Ras Manegesha and Egypt troops
❤1
3. All of the following was the effect of the Crusade wars EXCEPT?
Anonymous Quiz
27%
A. Increased tolerance and respect among the religions
24%
B. Introduced Europeans to many new goods from the east
38%
C. Decreased the power of nobility in many countries of Europe
11%
D. Jerusalem controlled by Muslim
4. Which event happened immediately after the death of Prophet Muhammad?
Anonymous Quiz
41%
A. Muslim split in to two group namely Sunni and Shiites
22%
B. The Muslim empire was came to decline
20%
C. Muslims were absorbing Greece culture
17%
D. Muslims were harshly defeated by the people of neighbors
❤1
5. During Zemene Mesafint period, nominal Kings of Gondar were under control of--------
Anonymous Quiz
15%
A. Tigrean nobles
26%
B. Gojjam nobles
30%
C. Ahmara nobles
28%
D. Yejju Oromo nobles