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I answered it correctly; there is no need to answer an already answered question.

3

-

5

there u go

Since the denominators (bottom numbers) are the same, we can just add the numerators (top numbers):

2 + 1 = 3, so $${\frac{{\mathtt{2}}}{{\mathtt{5}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{5}}}} = {\frac{{\mathtt{3}}}{{\mathtt{5}}}} = {\mathtt{0.6}}$$

There are 60 minutes in an hour.

If the rate is 0.05 / 1 min

Then multiply both sides by sixty to get the rate per hour.

0.05∗60=3

1 min ∗60= 60 mins (1 hour)

3/1 hour

Hope I helped! 

An object 8 inches by 4 inches won't dilate down to 2.25 inches by 1 inch.

Because, to reduce 4 inches down to 1 inch, divide by 4; however, if you divide 8 inches by 4, you get 2 inches, not 2.25 inches.

Thus, you can't use just one scale factor in both directions.

To reduce 8 inches down to 2.25 inches, you need a scale factor of 2.25 / 8  or  0.28125.

To reduce 4 inches down to 1 inch, you need a scale factor of 1 / 4  =  0.25.

To calculate percent decrease:  divide the amount of decrease by the original amount:

     For the 8 inches down to 2.25 inches, the amount of decrease is 8 inches - 2.25 inches = 5.75 inches.

           Now, divide this amount by the original amount:  5.75 inches / 8 inches  =  0.71875  or  71.875%

The percent in the other direction can be calculated in the same way.

Geno did help you - didn't you understand?

help me!!

im so lost

To change units, multiply by 1; but multiply in a creative manner:  1  =  1/1  =  60 seconds / 1 minute

So, the rate  4.5 meters / 9 seconds  =  (4.5 meters / 9 seconds) x (60 seconds / 1 minute)

                                                           =  4.5 x 60 meters / 9 minute

(the 'seconds' in the numerator cancels the 'seconds' in the denominator)

Simplify this and you will have your answer.

Thank you guys soo much you helped me out a ton! thatl bring it right on up to an A!!

oh my gosh! yes ! thank you so much! because of that i will probably move on to 9th grade algebra 2! thanks again!

IF the new logo has the same relative dimensions as the original logo, it is a dilation.

For instance, if the original logo was 6 cm by 9 cm and the new logo is 2 cm by 3 cm (1/3rd as large in both directions), the new logo is a dilation of the old logo.

It would also be a dilation if it were increased instead of decreased.

Thanks! 

We can figure this out with this "formula"

(n - 2) 180 = 4140  ....  where n is the number of sides

n - 2 = 23    add two to both sides

n = 25

Thank you! It does! I really needed an answer.

968 ÷ 4

So we can do long division.
     We think about how many fours go into each digit, starting with the rightmost one, in this case the nine in the hundreds digit.

Since four is not a factor of nine, we use a multiple of four closest to nine, in this case eight. We know that 2x4=8. We write the two above the hundred's digit and an eight beneath the nine. We subtract, and bring down the next digit.

     242

  4⌈968

   - 8|

       |

       V

_________

     16               Now we think about what number we can multiply four by to get sixteen. 4x4=16. We write      - 16               the four above the six digit. We write a sixteen underneath the sixteen and move to the              |                next digit, in this case, eight. Eight equals four times two. We write a two above the eight            V               digit. There are no remainders. 

_________  

       00   

I hope I helped! 

8 times 4.5 equals 36 and you would put it like this 36 over 1 hope this helps:)

Amount  =  Rate x Time

For instance, if you know that water leaks at the rate of 2.3 liters per hour, to find out the time that it take for 1 liter to leak:       Amount  =  Rate x Time     --->     1 liter  =  2.3 liters/hour x Time

Divide both sides by 2.3 liters/hour             --->      1/2.3 hours  =  Time

                                                                    --->      0.435 hours  =  Time

(To change decimal hours into minutes, multiply by  60:  0.435 hours x 60 minutes/hour  =  26 minutes.)

it is 4 and 2 then you put another 2 behind it so you get 22

Instead of using x's for multiplication, use *'s, •'s, or ()'s. It is less confusing that way.

Physics started out as being a descriptive science:  light things float, heavy things fall, thrown items make an arc, the moon goes around the earth, etc.

Starting with Galileo, numbers were used to make predictions: what portion of an item floats; how fast do items fall; what kind of an arc is made, how high does the arc rise, how far does the arc go; in what way does the moon go around the earth; etc.

Math is needed to answer these questions, as well as other questions: what is the probability that it will rain tomorrow; how fast does a computer process information; how can we make a more fuel-efficient car?

8 inch 4 inch