All categories

3 years ago

What are rates? Can someone please explain discreptively?

2 answers:

6 0

A ratio are two numbers in the same unit being compared to one and another (for example, 2:18). A rate are two numbers in different units being compared to one and another (for example, 2 corn cost $1. The units are different, one is a number of items/objects and the other is a price).

harina [27]3 years ago

3 0

A rate is something like 60 km/h.
this is as much as i can tell you.
hope this helps.

You might be interested in

Yis inversely proportional to the square of x.

PtichkaEL [24]

Answer:

(a) $y = \frac{4}{x^2}$

(b) $x = \frac{2}{5}$

Step-by-step explanation:

Given

Variation: Inverse proportional.

This is represented as:

$y\ \alpha\ \frac{1}{x^2}$

See attachment for table

Solving (a):

First convert variation to equation

$y = k\frac{1}{x^2}$

From the table:

$(x,y) = (1,4)$

So, we have:

$4 = k * \frac{1}{1^2}$

$4 = k * \frac{1}{1}$

$4 = k * 1$

$4 = k$

$k = 4$

Substitute 4 for k in $y = k\frac{1}{x^2}$

$y = 4 * \frac{1}{x^2}$

$y = \frac{4}{x^2}$

Solving (b): x when y = 25.

Substitute 25 for y in $y = \frac{4}{x^2}$

$25 = \frac{4}{x^2}$

Cross Multiply

$25 * x^2 = 4$

Divide through by 25

$x^2 = \frac{4}{25}$

Take positive square roots of both sides

$x = \sqrt{\frac{4}{25}$

$x = \frac{2}{5}$

4 0

3 years ago

Suppose you begin with a pile of n stones and split this pile into n piles of one stone each by successively splitting a pile of

rodikova [14]

Start with five stones

7 0

3 years ago

12 dollars for 3 paper back books and 28 dollars for 7 paper back books are they equivalent please explain

kow [346]

If you have 12 dollars and you buy 3 paper back books, they each cost the same amount. So you would divide 12 dollars among 3 books to get the same answer for all of them. 12 divided by 3 equals the answer.

Then if you have 28 dollars and you buy 7 paper back books, they all cost the same amount. So that would be 28 divided by 7, equals the same answer.

3 0

4 years ago

Write the ratio 2.5 to 3.15 as a fraction in simplest form

Nuetrik [128]

The left figure that is 2.5 is taken as numerator while the right figure that is 3.15 is take as denominator.
therefore the fraction is
2.5/3.15
the multiply by a 100 to remove the decimals to give
250/315
in simplest form the fraction is divided by 5 to give
50/63

8 0

3 years ago

What is the equation of the line that passes<br> through the points (8,7) and (-1, -9)?

BARSIC [14]

Answer:

y = 16/9x - 7 2/9

Step-by-step explanation:

lmk if you want an explanation

4 0

3 years ago