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scoray [572]
3 years ago
8

I need help can you help me

Mathematics
2 answers:
patriot [66]3 years ago
8 0

Answer:

2 : 3

Step-by-step explanation:

BRAINLIEST PLEASE

steposvetlana [31]3 years ago
3 0

The answer is: " 2 :5 " ; or, write as: " 2/5 " .

________________________________________________________

The ratio of 'girls' to 'all students' is: "2: 5 " ; or, write as: " 2/5 ".

________________________________________________________

Explanation:

________________________________________________________

Given: The ratio of boys to girls is: " 3:2 " .

Problem: Find the ratio of "girls" to "all students:

________________________________________________________

Note: This ratio of "boys to girls", which is " 3 : 2 " ;

________________________________________________________

→ can be expressed as " 3x: 2x" ;

in which the total number of students is: " 3x + 2x " = 5x " .

→ The total number of students is represented as: " 5x " .

________________________________________________________

→ The ratio of "girls to boys" is: "2x : 3x" .

→ {that is; the "inverse" of the ratio of "boys to girls"} ;

→ {that is; the "inverse" of " 3x: 2x" } ; → which is: " 2x : 3x " .

________________________________________________________

The ratio of "girls" to "all students" is: "2x : 5x " ; or " 2x/5x " ;

→ Both "x" values cancel ; {since: " x/x = 1 "} ;

_________________________________________________________

→ and we have the answer: " 2 :5 " ; or, write as: " 2/5 " .

_________________________________________________________

The ratio of 'girls' to 'all students' is: " 2 :5 " ; or, write as: " 2/5 ".

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son4ous [18]

Answer:

y=\frac{5}{4}x+\frac{15}{4}

Step-by-step explanation:

x | y

-------

1     5

5   10

9    15

13   20

This one is linear because as x goes up by the same number so does y. So the ratio of difference of y to difference of x is the same per pair of points.

So a linear equation in slope-intercept form is y=mx+b where m is the slope and b is the y-intercept.

To find the slope, I'm going to line up the points vertically and subtract, then put 2nd difference over 1st difference. Like so,

( 1    ,   5)

-( 5   ,  10)

----------------

-4          -5

So the slope is 5/4 which makes sense since the y's are going up by 5 each time and the x's are going up by 4 each time.

So we have m=5/4. Let's plug that into our y=mx+b.

y=5/4 x+b

To find b, we need to use y=5/4 x+b along with one of the given points.

Choose; it doesn't matter.  I like (1,5) I guess.

y=5/4 x +b with (1,5)

5=5/4 (1)+b

5=5/4    +b

Subtract 5/4 on both sides:

5-5/4=b

20/4-5/4=b  (Found a common denominator)

15/4=b

The y-intercept is 15/4 so b=15/4.

So the equation for the line in slope-intercept form is y=5/4 x +15/4.

y=\frac{5}{4}x+\frac{15}{4}

4 0
3 years ago
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The cost of playing golf increases with the number of games played identify the independent and dependent quantity in the situat
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The independent quantity is the price to play 1 game, and the dependent quality is however many games are played.
5 0
3 years ago
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Avery uses a blend of dark chocolate and milk chocolate to make the ice cream topping at her restaurant. She wants to buy 10 kg
Ksju [112]

Answer:

d = m + 10\\d+m=150

Step-by-step explanation:

If Avery wants the amount of dark chocolate (d) to be 10 kg higher than the amount of milk chocolate (m), then the following relationship must be true:

d = m + 10

If the total amount of chocolate must equal 150 kg, then:

d+m=150

The system of equations that represent this situation is:

d = m + 10\\d+m=150

5 0
3 years ago
A user’s password to access a computer system consists of 3 letters followed by 2 digits. How many different passwords are possi
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Answer:

26*26*26 = 17576 ways to select 3 letters

10*10= 100 ways to select 2 numbers

So then the total number of ways are:

26^3 *10^2 = 1757600 possible ways

Step-by-step explanation:

For this case we assume that we have 26 letters from A to Z and 10 numbers from 0 to 9 .

And we want to calculate the number of possible passwords possible if the password consists of 3 letters followed by 2 digits.

And for this case we can use the multiplication principle of combinatories, since we don't have any restriction about the letters of the numbers we can have repetition of letters or numbers.

For the number of possible letters:

26*26*26 = 17576 ways to select 3 letters

10*10= 100 ways to select 2 numbers

So then the total number of ways are:

26^3 *10^2 = 1757600 possible ways

7 0
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aniked [119]
E: two and two fifths 
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