Three equivalent ratios of 10 to 15

Help I have a C in math. I don't understand this Alegbra. If you get it right then I will give you Brainlist!

I am Lyosha [343]

irrational number, any real number that cannot be expressed as the quotient of two integers.

Any number that can be written as a fraction with integers is called a rational number . For example, 17 and −34 are rational numbers. (Note that there is more than one way to write the same rational number as a ratio of integers.

1st Is rational

2nd one is irrational

3rd is irrational

4th is rational

6 0

2 years ago

Of the students in your class, 12% are left-handed. What fraction of the students are left-handed? Are there more right-handed o

kvv77 [185]

The left-handed students
12% are left handed, percent means per hundred. Change percent into per 100.
12% = $\dfrac{12}{100}$

Then simplify the fraction by dividing the numerator and denominator by 4
$\dfrac{12}{100}$
= $\dfrac{12:4}{100:4}$
= $\dfrac{3}{25}$
This is the fraction showing the proportion of the left-handed students

The right-handed students
Determine the fraction showing the proportion of the right-handed students
1 - the left-handed
= 1 - $\dfrac{3}{25}$

Equalize the denominator to 25
$\dfrac{25}{25} - \dfrac{3}{25}$

Simplify
$\dfrac{21}{25}$
This is the proportion of the right-handed students

<span>Are there more right-handed or left-handed students?
There are more right-handed students than the left-handed students, because 21/25 is more than 3/25</span>

4 0

3 years ago

Quadratic equation

Murrr4er [49]

Answer:

Step-by-step explanation:

x - age of a son three years ago

3x - age of a father three years ago

x + 3 - age of the son now

3x + 3 - age of the father now

x + 3 + 5 - age of the son in five years time

3x + 3 + 5 - age of the father in five years time

in five years time, the father will be twice as old as his son, so:

3x + 3 + 5 = 2(x + 3 + 5)

3x + 8 = 2x + 16

3x - 2x = 16 - 8

x = 8

x + 3 + 4 - age of the son in four years time

8 + 3 + 4 = 15

3x + 3 + 4 - age of the father in four years time

3×8 + 3 + 4 = 31

the sum of their ages in four years time:

15 + 31 = 46

8 0

2 years ago

Given the flag ABCDE, determine the single rule (x,y) that creates the

cricket20 [7]

Answer:

(y, -x)

Step-by-step explanation:

Rotation of 90°

(Clockwise)

(x, y) ---> (y, -x)

Rotation of 90°

(CounterClockwise)

(x, y) --> (-y, x)

Rotation of 180°

(Both Clockwise and Counterclockwise)

(x, y) ---> (-x, -y)

Rotation of 270°

(Clockwise)

(x, y) ---> (-y, x)

Rotation of 270°

(CounterClockwise)

(x, y) ---> (y, -x)

6 0

2 years ago

6+3-4×2 using the order of operations

ANEK [815]

6+3-4x2 [we do 4x2 first because it's multiplication]
6+3-8
since we're left w addition and subtraction, we solve from left to right as usual.
9-8
= 1
i hope this helps bby! x

5 0

3 years ago

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