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steposvetlana [31]
3 years ago
15

Can anyone help me please at least to answer one of this please

Mathematics
1 answer:
natima [27]3 years ago
7 0

Answer:

7 answer is 4+2√129 I think

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Determine the measure of ∠DBC. answers: 1) 130° 2) 115° 3) 230° 4) 65°
Norma-Jean [14]

Answer:

65 degrees

Step-by-step explanation:

65 degrees

it is 65 because of the vector relationship: 30 + 100 = 130. 130/2=65 degrees

5 0
3 years ago
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The sum of 5 consecutive odd numbers is 145. What is the third number in this sequence
vredina [299]

Answer: The 3rd number in the sequence is 29.

Step-by-step explanation: What we have is a sequence of “ODD” numbers and they are consecutive, which means they come one after another with regular intervals. We don’t have any of the numbers but we can start by saying ‘let x represent the first number in the sequence’

With this in mind, we can now assume all other four numbers in the sequence. Therefore if the 1st number is x, the 2nd number would be x + 2, and the the 3rd number would be x + 4, 4th number would be x + 6 while the 5th number would be x + 8.

The reason is that, every odd number is an addition of two to the previous odd number. For instance, if you start with 3, the next odd number would be 3+2 (5), and so on.

Therefore we can now write our consecutive odd numbers as follows;

x + (x + 2) + (x + 4) + (x + 6) + (x + 8)

Remember that all the numbers add up to 145. Therefore,

x + x + 2 + x +4 + x + 6 + x + 8 = 145

5x + 20 = 145

Subtract 20 from both sides of the equation

5x = 125

Divide both sides of the equation by 5

x = 25.

The first odd number is 25, which means the 3rd odd number is 25 + 4.

Therefore the 3rd odd number is 29.

5 0
3 years ago
PLEASE HELP ASAP!!!! I HAVE ONLY 2 ATTEMPTS LEFT! I WILL AWARD BRAINLIEST IF YOU ANSWER THEM BOTH CORRECTLY!
liq [111]

Answer:

They both have no possible solution.

Step-by-step explanation:

Don't know how to explain, but it's 100% right

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Convert 75 percent to a decimal
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To convert to a decimal, divide by 100.

75 / 100 = .75

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I need help with this one to / surface area :)
zzz [600]

Answer:

389.9 to 1 decimal place

If you need another explanation comment on this one

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3 years ago
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