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blsea [12.9K]
3 years ago
10

N ≤ -2.5 i’m doing mathematics

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
7 0
The second Establishment Offers the best deal
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Five times the sum of the digits of a two-digit number is 13 less than the original number. If you reverse the digits in the two
mafiozo [28]

Answer:

The difference of the original two-digit number and the number with reversed digits is 18.

Step-by-step explanation:

Since it's a two digit number, let x represent the tens digit and let y represent the units digit.

Thus, the original two digit number is;

10x + y.

The reverse two digit number is;

10y + x.

We are told that five times the sum of the digits of the two-digit number is 13 less than the original number.

Thus;

5(x + y) = (10x + y) - 13

Multiplying out the bracket gives;

5x + 5y = 10x + y - 13

Rearranging gives;

10x - 5x + y - 5y = 13

5x - 4y = 13 - - - - (3)

Also,we are told that, four times the sum of its two digits is 21 less than the reversed two-digit number. Thus;

4(x + y) = (10y + x) - 21 - - - (4)

Simplifying gives;

4x + 4y = 10y + x - 21

>> 10y - 4y - 4x + x = 21

>> 6y - 3x = 21 - - - (4)

Solving eq(3) and (4) simultaneously gives;

x = 5 and y = 3

Thus,

Original number = 53

Reversed number = 35

Difference between original and reversed number = 53 - 35 = 18

6 0
3 years ago
Translate the following sentence to an inequality. A number is no less than seven.
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Answer:

X <u>></u> 7

Step-by-step explanation:

X <u>></u> 7

6 0
2 years ago
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Okay Adam has 16.45 kg of flour and he use a 6.4 kg to make his Hot Cross Buns the remaining flour is exactly enough to make 15
Karolina [17]
16.45 - 6.4 = 10.05kg of flour to make 15 batches of scones
1 batch = 10.05/15 
= 0.67kg of flour.
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3 years ago
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What are the domain and range of f(x) = log(x+b) - 4?
Gnesinka [82]

Answer:

I'm probably to late but i took the test and the answer is B.

domain: x > –6; range: all real numbers.

Hope This Helped!

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3 years ago
∠A and \angle B∠B are supplementary angles. If m\angle A=(x+6)^{\circ}∠A=(x+6) ∘ and m\angle B=(7x+30)^{\circ}∠B=(7x+30) ∘ , the
nikitadnepr [17]

Answer:

a!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Step-by-step explanation:

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