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zaharov [31]
3 years ago
13

A group of students attended a math club. Half the students are boys and 4/9 of the boys have brown eyes. What fraction of the g

roup are boys with brown eyes.
Mathematics
1 answer:
Daniel [21]3 years ago
8 0

Answer:

2/9

Step-by-step explanation:

The question asks to calculate the number of boys in a group who has brown eyes given the fraction of the boys having the brown eyes.

To do this, we can take any arbitrary value for the total number of students in the math club. Let’s say this is 360 students.

Now, we are told that half of these number are boys. The total number of boys is thus 180 boys. Also, we are made to know that 4/9 of these boys have brown eyes. This means 4/9 of 180 boys have brown eyes. This is numerically equal to 4/9 * 180 = 80 boys.

Hence, the fraction of the math club with brown eyes is 80/360 = 2/9

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kykrilka [37]

Answer:

Do the Division first.

Step-by-step explanation:

If you remember PEMDAS, or BOMDAS if you prefer, division and multiplication comes before addition and subtraction.

x, in this case, would equal -27. (-27 ÷ 3 = -9) then add 10

(-9 + 10 = 1)

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3 years ago
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Tisha and her academic team are working to go to state finals. They must have a certain number of points to advance. They have h
kolbaska11 [484]

Answer:

b=\frac{T-a-c-d}{3}

b = (T - a - c - d) / 3

Step-by-step explanation:

Let T be the total number of points required to advance.

a, c and d are points scored in the local matches, and b is the number of points scored in the district match. If b is worth 3 times as much as the other matches, the total number of points is given by:

T=a+c+d+3b

Isolate b in order to find out how many points they need in the district match:

T=a+c+d+3b\\3b=T-a-c-d\\b=\frac{T-a-c-d}{3}

They need to score (T - a - c - d)/3, in the district match in order to win.

4 0
3 years ago
I need help!! thanks. Will crown.
Ymorist [56]

Answer:

d(10)=20?

Step-by-step explanation:

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What property is shown 7+(8+12)=7+12
vladimir2022 [97]
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Find the z-scores (two of them) that separate the middle 48% of the distribution from the area in the tails of the standard norm
djverab [1.8K]

Answer:

The  z-scores are   Z_{\frac{\alpha }{2} } =  0643 and  Z_{\frac{\alpha }{2} } =  - 0643

Step-by-step explanation:

From the question we are told that

    The  middle of the distribution area considered is  48%

Now the rest of the area under the standard normal distribution area is  mathematically evaluated

      \alpha  =  100-  48

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Now the z-score is obtained from the normal distribution table and the value is

     Z_{\frac{\alpha }{2} } \pm 0.643

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