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Anna11 [10]
2 years ago
11

In Linguistics 101, the ratio of the number of girls to the number of boys is $3:2$. When seven more girls join the class, and t

wo boys drop the class, the ratio of the number of girls to the number of boys becomes $5:2$. How many students are in the class after these changes?
Mathematics
2 answers:
never [62]2 years ago
7 0

Answer:

Step-by-step explanation:3.26*3.25- -5

muminat2 years ago
5 0

Answer:

There are 25 students in the class after the changes

Step-by-step explanation

Let G= The total number of girls after the change

Let B= The total number of boys after the change

g/b=3/2

G+7/B-2=5/2

After cross multiplying  you get 5B-10=2B+14

and 3B=2B

Then you solve to get B=12. Then plug B back in any equation to get G=18.

Then plug your to number back in G+7/B-2=5/2 to get 18+7 and 12-2. Once you solve and add you get 25 students.

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Carla packed this box with 1 centimeter cubes what is the volume of the box
shusha [124]

Answer: 60\ cm^3

Step-by-step explanation:

<h3> The complete exercise is attached.</h3>

You can observe in the picture attached that the box is a rectangular prism.

The volume of a rectangular prism can be found with this formula:

V=lwh

Where "l" is the length, "w" is the width and "h" is the height.

You know that the lenght of each side of those cubes is 1 centimeter. Therefore, you can multiply the number of cubes on each side of the box by 1 centimeter in order to find the lenght, the width and the height of the box:

 l=(4)(1\ cm)=4\ cm\\\\w=(3)(1\ cm)=3\ cm\\\\h=(5)(1\ cm)=5\ cm

Now you can substitute the lenght, the width and the height of the box into the formula shown at the beginning of the explanation:

V=(4\ cm)(3\ cm)(5\ cm)

Finally, evaluating, you get that the volume of the box is:

V=60\ cm^3

4 0
2 years ago
Morgan, Dakota and Taylor showed their work solving the equation 7x + 5x +1= 73. Identify the student with the invalid first ste
Pavel [41]

Answer:

Morgan, Dakota and Taylor showed their work solving the equation 7x + 5x +1= 73. Identify the student with the invalid first step and justify your reasoning. Morgan 7x + 5x + 1 = 73 12x + 1 = 73 Dakota 7x + 5x + 1 = 73 7x + 6x = 73 Taylor 7x + 5x + 1 = 73 7x + 5x = 72​

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Which function has a simplified base of 4RootIndex 3 StartRoot 4 EndRoot? f(x) = 2(RootIndex 3 StartRoot 16 EndRoot) Superscript
PIT_PIT [208]

Answer:

  f(x)=4\sqrt[3]{16}^{2x}

Step-by-step explanation:

We believe you're wanting to find a function with an equivalent base of ...

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The functions you're looking at seem to be ...

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The third choice seems to be the one you're looking for.

9 0
2 years ago
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This figure is made up of a triangle and a semicircle.
salantis [7]
We know that

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for r=3.5 units
[the area of semicircle]=pi*3.5²/2---> 19.24 units²

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h=3 units
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the answer is
 29.7 units ²
5 0
2 years ago
Square root of 761.76 by division method
Free_Kalibri [48]

Answer:

Step-by-step explanation:

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