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3 years ago

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Mathematics

1 answer:

Snowcat [4.5K]3 years ago

4 0

Add them all up and divide by 30. Answer: $55.20.

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In Ms Barclay's classroom 2/5 students play chess. 5/6 of the students play Sudoku. If there are 30 students, in her class how m

Nonamiya [84]

Answer:

12 students play chess

and 25 students play Sudoku

Step-by-step explanation:

There are 30 students in Ms Barclay's classroom.

2/5 students play chess.

i.e. $\dfrac{2}{5}\times 30$ play chess

i.e. 12 students play chess

5/6 of the students play Sudoku.

i.e. $\dfrac{5}{6}\times 30$ play Sudoku

i.e. 25 students play Sudoku

Hence, 12 students play chess

and 25 students play Sudoku

6 0

3 years ago

4. Tyrell scored an 80% on his math test. If there were 40 questions, how many did he get correct?

Neko [114]

Answer:

32 Questions

Step-by-step explanation:

If you do 80% times 40, it equals 32.

7 0

3 years ago

Read 2 more answers

Hello I need help with this immediately please see attached image thank you so much I will give Brainliest

erma4kov [3.2K]

Note that while the figure is made up of rectangle and parallelogram, then the area of this figure

$A_{figure}=A_{rectangle}+A_{parallelogram}.$

1. The area of rectangle is

$A_{rectangle\ ABCF}=AB\cdot BC.$

The vertices of rectangle are points A(-2,-2), B(0,-6), C(8,-2) and F(6,2). Then

$AB=\sqrt{(-2-0)^2+(-2+6)^2}=\sqrt{4+16}=\sqrt{20}=2\sqrt{5},\\ \\BC=\sqrt{(8-0)^2+(-2+6)^2}=\sqrt{64+16}=\sqrt{80}=4\sqrt{5}.$

Therefore,

$A_{rectangle\ ABCF}=2\sqrt{5}\cdot 4\sqrt{5}=8\cdot 5=40\ un.^2$

2. The area of parallelogram can be calculated using formula

$A_{parallelogram\ FCDE}=\text{base}\cdot \text{height}.$

The base of parallelogram is segment CD with length

$CD=\sqrt{(8-8)^2+(3+2)^2}=\sqrt{25}=5$

and the height has length 2 un. Then

$A_{parallelogram\ FCDE}=5\cdot 2=10\ un^2.$

3. Now

$A_{figure}=40+10=50\ un.^2$

8 0

3 years ago

Use the strategy to simplify 4\sqrt(576)<br> Write the prime factorization of the radicand.

Ronch [10]

<h3>Answer: 96</h3>

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Work Shown:

$4\sqrt{576}\\\\4\sqrt{2*2*2*2*2*2*3*3}\\\\4\sqrt{(2*2)*(2*2)*(2*2)*(3*3)}\\\\4\sqrt{(2)^2*(2)^2*(2)^2*(3)^2}\\\\4\sqrt{(2*2*2*3)^2}\\\\4\sqrt{24^2}\\\\4*24\\\\96\\\\$

6 0

3 years ago

Read 2 more answers

David's gasoline station offers 21 cents off per gallon if the customer pays in cash and does not use a credit card. Past eviden

Hatshy [7]

<u>0.0931</u><u> is the </u><u>probability </u><u>that at least 10 pay in cash.</u>

What is a probability simple definition?

The ratio of the number of outcomes in an exhaustive set of equally likely outcomes that produce a given event to the total number of possible outcomes.

Using binomial distribution with n= 15, and p = 0.40,

P(8<X<12) = P(X=9)+P(X=10) + P(X=11)

= 0.0612+0.0245+0.0074

= 0.0931

Therefore,0.0931 is the probability that at least 10 pay in cash.

Learn more about probability

brainly.com/question/11234923

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5 0

2 years ago