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lesya692 [45]
3 years ago
8

36 − [18 − {14 − (15 − 4 ÷2 ×2)}]​

Mathematics
1 answer:
muminat3 years ago
5 0

Answer: 21

Step-by-step explanation:

have a good day! :)

plz give me brainliest

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Please can someone help me
spin [16.1K]

1. ratio to you and then your friend is 4 : 3. By guessing is the quickest choice and when I did that I finally found that you have had to multiply both by 8 to find:

your allowance : 32

your friend's allowance : 24

32 + 24 = 56

2. ratio to you and then your friend is 7 : 5. By guessin is the quickest choice and when I did I finally found that you have had to multiply both by 6 to find:

your allowance : 42

your friend's allowance : 30

42 + 30 = 72

6 0
3 years ago
Find the number of positive integers n is less than or equal to 1000 such that 15n is a perfect square.
boyakko [2]

Answer:

8 positive integers.

Step-by-step explanation:

One value of n would be 15 because 225 = 15^2.

Other values  are 225 * n where 15n  <= 1000 and n is a perfect square.

So n = 4 gives us 225* 4 = 900 which is a perfect square and 15*4 = 60.

n = 9  gives us 225 * 9 which is a perfect square and 15*9 = 135.

n = 16 gives us 225*16  and 15*16 = 240 , so OK.

n = 25   gives a perfect square and  and 15*25 = 375 - so OK.

n = 36 gives a perfect square and 15*36 = 540 - so OK.

n = 49 gives a perfect square and  15*49 = 735 - so OK.

n = 64 gives a perfect square and 15*64 = 960 - so ok.

n = 81 gives a perfect square and 15 * 81 = 1215  so NOT ok.

3 0
3 years ago
8. An 18-foot ladder is placed 5 feet from a wall. How far up the wall does the ladder<br> reach?
svetoff [14.1K]

Answer: is it 13 feet up?

3 0
3 years ago
Read 2 more answers
2.25% as a fraction
svetlana [45]

Answer:9/4

Step-by-step explanation:multiply 2.25 by 100 so you get 225/100 and reduce

4 0
4 years ago
Read 2 more answers
Check whether x-1/2 is a factor of 8x3-4x2+10x-5
olga nikolaevna [1]

Answer:

x-1/2 is in fact a factor of 8x3-4x2+10x-5 so you are correct

Step-by-step explanation:

The equation can be simplified into (2x-1)(4x2+5) and 1/2 is one of the factors

4 0
3 years ago
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