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aleksandr82 [10.1K]
3 years ago
10

A Mathematics teacher gave a 20-item surprised quiz to his 25 students. All of the scores of the students were unique except for

the scores of Aiza and Glaiza because both of them got the same score of 12. Their scores were in the 60th percentile.
1.How many students have scores less than 12?

2. How many students have scores greater than 12?​
Mathematics
1 answer:
TiliK225 [7]3 years ago
5 0

Answer:

total number of students is 25

AIZA AND GLAIZA came 60% of the 25 students that is 15th position

A) therefore students which came below them were= 10

B) Students who has scored greater than them were=> 15-2=13 (as they niether got less than 12 nor more than 12.)

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Mrs.Cleaver mixes 1.24 liters of red paint with 3 times of blue paint to obtain purple paint. She divides the paint equally in 5
slamgirl [31]

The amount of blue paint in each container is \fbox{\begin\\\ 0.744 liters \end{minispace}}.

Further explanation:

Mrs. Cleaver mixes 1.24 litres of red paint with 3 times blue paint to obtain purple paint.

So, the amount of blue paint used is calculated as,

{3} \times {1.24}=3.72 \text { liters}

Therefore, the total paint mixture is the sum of blue paint and red paint.

\fbox{\begin \\\begin{aligned} \text{Total paint}= 1.24+3.72\\=4.96 \text{ liters}\\\end{aligned}\\\end{minispace}}

Now, as Mrs. Cleaver divides the paint mixture equally in 5 containers so the amount of paint in one container is calculated as,

\boxed{\begin{aligned}\text{Amount of paint in one container}&= \dfrac{4.96}{5}\\ &=0.992 \text{ liters} \end {aligned}}

Since amount of blue paint mixed is three times the red paint so the fraction of blue paint to the total paint is \dfrac{3}{4}.  

Now, as it is known that the fraction of blue paint to the total paint is \dfrac{3}{4} and the amount of paint in a container is 0.992 \text{ liters} then the blue paint in one container is calculated as,

\boxed{\begin{aligned}\text{Blue paint in one container} =\dfrac{3}{4} \times 0.992\\=0.248 \text{ liters}\end{aligned}}

Thus, the amount of blue paint in each container is \fbox{\begin\\\ 0.744 liters \end{minispace}}.

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Answer details  

Grade: Middle school  

Subject: Mathematics  

Chapter: Mixtures and ratios

Keywords: mixture, paint, red paint, blue paint, Mrs. Cleaver, purple paint, fraction, each container, five containers, divides, times, equally divide, mixes, liters.

4 0
3 years ago
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Geometry...................
m_a_m_a [10]

Answer:

The answer to your question is below

Step-by-step explanation:

Data

Number of employees = 192

See the table

Process

a) To solve this question, consider only the employees that prefer a jacket

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          Female  +35

                         112 employees prefer a jacket

- Calculate the probability

            P = 112 / 192

            P = 0.58

b) Female and prefers a jacket

            P = (54 /192)(35/192)

            P = (0.28)(0.18)

            P = 0.05

 

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frosja888 [35]

Answer:

Step-by-step explanation:

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C+1/c-2 =4/7 these are both fractions can you please show your work
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Yes, I can! If you have any more questions, please ask!

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Answer:

b = g + 7 and b+g= 29. is the answer

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