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3 years ago

When should I cross multiply fractions and when don’t I cross multiply?

Mathematics

2 answers:

WINSTONCH [101]3 years ago

7 0

You can cross multiply fractions only if there is an "=" sign in the middle of the two fractions.

kotykmax [81]3 years ago

6 0

you should cross multiply because when your figuring if two or more terms (I think) are porportional and when your not cross multipling is when it is an easy question or finding an easier way to do it

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As water evaporates from a bucket, its weight changes at a rate of -11/4 ounces per day.

masha68 [24]

Answer:

the five differences are 24.88

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2 years ago

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3 years ago

Camacho is buying a monster truck. The price of the truck

Mice21 [21]

Total cost = a + (13a/100)

Step-by-step explanation:

Let the price of the monster truck be 'a'

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The equation to represent the total cost is

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3 years ago

A map has a scale of 1 in. : 5 mi. The distance on the map between two cities is 11.5 inches. Find the actual distance between t

Vladimir [108]

Answer:

57.5 mi

Step-by-step explanation:

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6 0

2 years ago

Two equivalent equations of the line in point slope form for (-4,8) and (0,5)

34kurt

Answer:

Equation of line 1 is 3 X - 4 Y = 20

Equation of line 2 is 3 X + 4 Y = 20

Step-by-step explanation:

Given co ordinates of points as,

( -4 , 8) and (0 , 5)

From the given two points we can determine the slop of a line

I. e slop (m) = $\frac{(y2 - y1)}{(x2 - x1)}$

Or, m = $\frac{(5 - 8)}{(0 + 4)}$

So, m = $\frac{(-3)}{(4)}$

Now equations of line can be written as ,

Y - y1 = m ( X - x1)

At points ( -4 , 8)

Y - 8 = $\frac{(-3)}{(4)}$ (X + 4)

So , Equation of line 1 is 3 X - 4 Y = 20

Again with points ( 0 , 5)

Y - 5 = $\frac{(-3)}{(4)}$ ( X - 0)

So, Equation of line 2 is 3 X + 4 Y = 20

Hence Equation of line 1 is 3 X - 4 Y = 20 and Equation of line 2 is 3 X + 4 Y = 20 Answer

4 0

3 years ago