2 years ago

Question 15 2 points)

Mathematics

1 answer:

tino4ka555 [31]2 years ago

3 0

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The sum of the digits of a two-digit number is 5. If nine is subtracted from the number, the digits will be reversed. Find the n

Sunny_sXe [5.5K]

Answer: 32

Step-by-step explanation:

Let x + y = 5

x = 5 - y....................(1)

10x + y -9 = 10y + x..... . (2)

Substituting (1) in (2)

10(5-y) + y - 9 = 10y + (5-y)

50-10y + y - 9 = 10y + 5 - y

41 - 9y = 9y + 5

-9y - 9y = 5-41

-18y = - 36

y = 36/2 = 2

So, x = 5-2 = 3

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3 years ago

Which statements about the relationship between the two triangles below are true? Check all that apply.

Gre4nikov [31]

Answer:

B C E on edge

Step-by-step explanation:

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2 years ago

( CORRECT ANSWER GETS BRAINLIEST AND FULL RATINGS !!!)

ozzi

Answer:

a . 1/13

Step-by-step explanation:

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3 years ago

There are 3 blouse and 2 pieces cloths for sale in the market. how many possible sets are there?

Andrew [12]

Answer:

Each item could be included in a set or not included. That gives 2^5 = 32 ways to choose sets, including 1 set with no items, 5 sets of 1 item, 10 sets of 2 items, 10 sets of 3 items, 5 sets of 4 items, and 1 set of 5 items.

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3 years ago

Patrick is keeping track of how far he jogs each morning.

katrin2010 [14]

Answer:

21:50

Step-by-step explanation:

We need to find the ratio of 420 m to 1 km.

We know that,

1 km = 1000 m

So,

The ratio becomes,

$\dfrac{420\ m}{1\ km}=\dfrac{420\ m}{1000\ m}\\\\=\dfrac{42\ m}{100\ m}\\\\=\dfrac{21}{50}$

So, the required ratio is 21:50.

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3 years ago