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3 years ago

Why is it important to write equivilant fractions before renaming

Mathematics

1 answer:

ipn [44]3 years ago

5 0

Answer:

when y rename a fraction, you are finding fraction that have the same value but have different name. these are known as equivalent fraction you can rename fraction million of different ways...As long as you multiply numerator and denominator by same number, you will get and equivalent fraction...

Step-by-step explanation:

for example :5/2

5×2/2×2 , 5×3/2×3 , 5×4/2×4 , 5×5/2×5

ANSWER OF THESE EQUIVALENT NUMBERS ARE :

10/4 , 15/6 , 20/8 , 24/10 ....

You might be interested in

Cars are made in a factory at a rate of 39 cars every 3hours at this rate, how many cars can be made on the factory in 7 hours

Mumz [18]

Answer:

Step-by-step explanation:

39 cars every 3 hrs.......that means (39/3) = 13 cars every hr

and if its 13 cars every hr....in 7 hrs, there will be (7 * 13) = 91 cars <==

you can either do it that way....the unit rate way...OR

you can set it up as a proportion...

39 cars to 3 hrs = x cars to 7 hrs...

39 / 3 = x / 7....cross multiply

(3)(x)= (39)(7)

3x = 273

x = 273/3

x = 91 <====

either way, u get the correct answer

8 0

3 years ago

Please help me plzzzzz

Lena [83]

Answer:

6) B. Reflection over the y-axis, then reflection over the x-axis

7) B. The initial value of the function is the y-intercept of the line, 275

8) A. y = 45 - 6x

Step-by-step explanation:

6) See first attached file :)

7) Option A is incorrect because the rate of change/slope is "-20x" not just "-20." Option C is incorrect because the initial value/y-intercept is $275 and not $2. Option D is incorrect because it implies she doesn't withdraw $20 the first month, which wasn't mentioned in the question. Option B is the only one to apply to the graph. See second attached file for graph reference.

8) The question explains the function "y=6x+45" and that matches all options except for option A.

haha third time for this one

3 0

3 years ago

The length of a rectangle is four times its width. if the perimeter of the rectangle is 80yd, find its length and width.

Vedmedyk [2.9K]

The length is 8. the width is 32.

32(2) = 64

8(2) = 16

64+16 = 80

So the length would be 8 and the width would be 32 since it's 4 times the length.

Hope this helped!

6 0

3 years ago

Read 2 more answers

Which linear inequality is represented by the graph?

gulaghasi [49]

Answer:

Y < 3x+2

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

PLZ HELP! A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a tr

Kruka [31]

Answer:

3.8

Step-by-step explanation:

A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains.

If a trip of 300 miles took 3 hour and 48 minutes, how much of it was through the mountains?

Let d = distance traveled at 37.5 (thru the mountains)

then

(300-d) = distance traveled at 90 mph

Write a time equation, time = dist/speed

change 3 hr 48 min to hrs: 3 + 48/60 = 3.8 hrs

plain time + mountain time = 3.8 hrs

%28300-d%29%2F90 + d%2F37.5 = 3.8

Multiply 90*37.5

3375*%28300-d%29%2F90 + 3375*d%2F37.5 = 3.8(3375)

cancel the denominator

37.5(300-d) + 90d = 12825

11250 - 37.5d + 90d = 12825

52.5d = 1575

d = 1575/52.5

d = 30 mi thru the mountains

Check this, find the distance on the plain

300-30 = 270 mi

Find the actual time at each speed

270/90 = 3 hrs

30/37.5 = .8 hrs

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

total time: 3.8 hrs

7 0

3 years ago