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DaniilM [7]
3 years ago
15

How do you know that the sum of

Mathematics
2 answers:
Hoochie [10]3 years ago
6 0
The guy above me answered it so hey, have a good day
ser-zykov [4K]3 years ago
3 0

Answer:

A rational number is any number that can expressed as a fraction, those numbers are already fractions, so any operation on them gives a fraction which is rational

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Tanya bought 3 items that each cost the same amount. Tony bought 4 items that each cost the same amount, but each was $2.25 less
deff fn [24]

Answer:

The individual cost of each person’s items was $ 9 for Tanya and $6.75 for Tony

Step-by-step explanation:

First we have to find 2 equations to express the problem

x = value of each item

y = total amount of money

3x = y

4 ( x - 2.25 ) = y

we replace the y by (3x) in the second equation and obtain the value of x

4 ( x - 2.25 ) = y

4 ( x - 2.25 ) = 3x

4x - 9 = 3x

4x - 3x = 9

x = 9

9 - 2.25 = 6.75

this means that the individual cost of each person’s items was $ 9 for Tanya and $6.75 for Tony

3 0
3 years ago
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scoundrel [369]
0       0      (0,0)
11     2     (11,2)
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7 0
3 years ago
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The speed limit sign on the freeway said 110 kilometers per hour, but the speedometer on Cesar's car is calibrated in miles per
Lisa [10]

Answer:

68.2 miles per hour

Step-by-step explanation:

Speed limit = 110 kilometers per hour

1 kilometer = 0.62 miles

110 kilometers = x miles

Cross product

1*x = 0.62*110

x = 68.2 miles

Cesar should drive at 68.2 miles per hour to avoid a speeding ticket

110 kilometers per hour = 68.2 miles per hour

6 0
3 years ago
The<br> m<br> m<br> т<br> m<br> m<br> Find the value of m that ma
Leokris [45]

Answer:

  • m = 9

Step-by-step explanation:

Same tape length measures 63 units on top and 7 times m on bottom.

<u>Make an equation and solve for m:</u>

  • 7m = 63
  • m = 63/7
  • m = 9
6 0
3 years ago
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In the library where you work, it usually takes you 2 hours to shelve 5 carts of books. At this rate, about how many minutes sho
Setler79 [48]

Answer: 24 min

Step-by-step explanation:

2 hrs / 5 carts = 120 min / 5 carts

120 / 5 = 24 min / 1 cart

5 0
3 years ago
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