Six out of the 12 members of the school choir are boys. In simplest form, what fraction of the choir is boys?

stira [4]

2/5x+y=3

-2/5x -2/5x

y=-2/5x+3

Does y = to whole number or just like that? if it Whole number I will solve it tell me

3 0

3 years ago

medical students use a three-dimensional reproduction of a human skeleton to learn about bones. which item describes this learni

Nataly [62]

A plastic skeleton is

Answer: B. a physical model.

The world has lots of different kinds of models. A mathematical model might be a ball travels according to the equation $y = v_0 t - \frac 1 2 gt^2$ . This isn't that. A computer model would be a program that somehow simulates a skeleton in the computer, this isn't that either. Our skeleton is an actual physical model just like a model airplane.

4 0

3 years ago

Help with math homework pls! NO WRONG ANSWERS!!!

Masteriza [31]

We have been given the expression

$\frac{a\cdot a \cdot a \cdot a \cdot a \cdot a }{a}$

We have to write this expression in the form $a^n$

In order to write the given expression in this form, we can use some exponent property.

$(1) x^a\cdot x^b= x^{a+b}\\\\(2)\frac{x^a}{x^b}=x^{a-b}$

On using the property (1), we have

$\frac{a\cdot a \cdot a \cdot a \cdot a \cdot a }{a}\\\\=\frac{a^{1+1+1+1+1+1}}{a}\\\\\frac{a^6}{a}$

Now, on using the property (2), we get

$\frac{a^6}{a}\\\\=a^{6-1}\\\\=a^5$

Therefore, the simplified form of the given expression is

$a^5$

4 0

3 years ago

A student deposits the same amount of money into her bank account each week. At the end of the second week she has $30 in her ac

Nonamiya [84]

The student will have $135 in her bank account at the end of the ninth week. You can fine this out by finding out the amount she deposits a week and to do this you would take the $30 and divide it by 2 because she had $30 at the end of the second week.
30/2=15
So you see that the student deposits $15 each week, so to find out how much money she will have in 9 weeks you will multiply her $15 by 9.
15x9=135
So the student will have $135 at the end of the ninth week.

6 0

2 years ago

On a map, 1 inch equals 25 miles.Two cities are 3 inches apart on the map.What is the actual distance between the cities?

SVEN [57.7K]

Answer:

75 miles

Step-by-step explanation:

We are given the scale on the map, which is that 1 inch is 25 miles in real life. We can write that as a ratio of 1 inch: 25 miles. Now say we have two inches, then we have 50 miles because we add on another 25 miles, then we do that again and we get to 75 miles.

Another way to think about it (more complicated):

you can represent ratios as a fraction

so we do 1/25=3/x

To find x, we can do (25*3)/1 which equals 75, if you don't know what I did there then you don't know, sorry!

you can also do it in a different way

same scenario though

you represent it as a fraction

and do 1/25=3/x. We see that the ratio from 1 to 3 is multiplied by 3 so that means the ratio from 25 to x is also going to be multiplied by 3, and 25 multiplied by 3 is 75.

Please let me know if you have any questions.

5 0

3 years ago

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