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Oxana [17]
3 years ago
5

True or false:

Mathematics
2 answers:
Irina18 [472]3 years ago
8 0

1) True. Make a list of the first few perfect squares (1, 4, 9, 16, 25, 36, 49, 64,81)

2) False. (a + b)(a + b) = a² + 2ab + b²

Blababa [14]3 years ago
3 0

number 1 is true the difference between two consecutive perfect square numbers is always odd

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In the last election, 72% of the voters
mezya [45]

Answer:

<u>Option A) 19 to 25</u>

Step-by-step explanation:

In the last election, 72% of the voters were in favor of a new outlet mall and

28% were against it.

Vanessa creates random samples of the voters using the numbers 1 to 25.

So, There are 25 numbers to represent all the voters

The range of number that could be used to represent the voters who were against the new outlet mall = 28% of 25 numbers = 0.28 * 25 = 7

So, <u>7 numbers only</u>  could be used to represent the voters who were against the new outlet mall.

Check the options to find which range has only 7 numbers.

A) 19 to 25 ⇒ 7 numbers  

B) 7 to 18    ⇒ 12 numbers

C) 15 to 25 ⇒ 11 numbers

D) 1 to 18    ⇒ 18 numbers

The answer is <u>option A) 19 to 25</u>

6 0
3 years ago
Solve for d:<br> df + 5d = h
Mama L [17]

Answer:

d=hf+5

Step-by-step explanation:

Step 1: Factor out variable d.

d(f+5)=h

Step 2: Divide both sides by f+5.

d(f+5)f+5=hf+5

d=hf+5

8 0
3 years ago
Four different digits from 1 to 9 are required to open a safe.
masha68 [24]

Answer:  5942

<u>Step-by-step explanation:</u>

Clue 4 states exactly two of the digits = 1, 4, or 9

Clue 1 leaves us with the following combinations:

1, 9, 2, 8

1, 9, 3, 7    eliminate by clue 5

4, 9, 2, 5

1, 4, 7, 8

Clue 5 directs us to the following order for 1,9,2,8

2 __ __ 1     --> 2981 or 2891   eliminate by clue 2

9 __ __ 8    --> 9128 or 9218   eliminate by clue 6

9 __ __ 2    --> 9182 or 9812   eliminate by clue 6

Clue 5 directs us to the following order for 4,9,2,5

5 __ __ 2     --> 5492 or 5942   eliminate 5492 by clue 2

9 __ __ 2    --> 9452 or 9542   eliminate by clue 3

Clue 5 directs us to the following order for 1,4,7,8

4 __ __ 1    --> 4781 or 4871    eliminate by clue 2

The only combination not eliminated is 5-9-4-2, which satisfies all six clues.

1) 5 + 9 + 4 + 2 = 20

2) 5 > 4

3) 9 - 2 > 5

4) 4 & 9 but not 1 are included

5) 5 + 2 = 7, which is a prime number

6) 2 <  5, 9, 4

5 0
3 years ago
115 is 26% of what??
makkiz [27]

Answer:

3306.5

Step-by-step explanation:


4 0
3 years ago
How would you do this?
Bess [88]
It would be 6.0x4 because the square is 6.0 on each side
6 0
3 years ago
Read 2 more answers
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