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vitfil [10]
4 years ago
9

There are four more girls than boys in Ms. Raub's class of 28 students. What is the ratio of number of girls to the number of bo

ys in her class?
Mathematics
1 answer:
FinnZ [79.3K]4 years ago
4 0
So there are x girls and x-4 boys and together they make 28:

x+x-4=28
2x-4=28
2x=32
x=16

so there are 16 girls and 12 boys.

the ratio is then 16:12, or we can simplify (by dividing both sides by 4): 4:3

so the best answer is 4:3.
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5 0
3 years ago
Antoine stands on a balcony and throws a ball to his dog, who is at ground level.
sdas [7]

Answer: The ball will hit the ground 4 seconds after being thrown.

Step-by-step explanation:

By definition, the ball hits the grounds when the height is zero.

Then, knowing that the Quadratic function that models that situation is:

h(x)=-2x^2+4x+16

You can make it equal to zero:

0=-2x^2+4x+16

Now you can use the Quadratic formula:

x=\frac{-b\±\sqrt{b^2-4ac} }{2a}

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a=-2\\b=4\\c=16

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Choose the positive solution.

Then, the ball will hit the ground 4 seconds after being thrown.

5 0
4 years ago
When is it better to use a table<br> When is it better to use a scatter plot
34kurt

Management information system requires tables, Tables are used only if a person is trying to analyse data and understand its business by summarizing.It is the 1st step of data analysis collecting data. Scatter plot is used when there is a question of association of two or three variable.

Step-by-step explanation:

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6 0
4 years ago
What is 2+4+6-9+17-4=x
Karolina [17]

Answer:

x = 16 or 16 = x

Step-by-step explanation:

2+4+6-9+17-4=x

6+6-9+17-4=x

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29-9-4=x

20-4=x

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7 0
3 years ago
Read 2 more answers
3 - (2x - 5) &lt; -4(x + 2)​
DIA [1.3K]

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Best of Luck!

7 0
3 years ago
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