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ipn [44]
4 years ago
5

Help lol i cant do math for the life of me

Mathematics
1 answer:
ipn [44]4 years ago
3 0

Answer:

55 degrees.

Step-by-step explanation:

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PLEASE HELP ME OUT I NEED THIS BY TONIGHT!!!!
Georgia [21]

Answer:

1) y=2x+6

Step-by-step explanation:

2) y=2×7+6=20ft

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3 years ago
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What is 1 2/25 as a decimal?
Elena-2011 [213]
Well, first of all, you have to change the mixed fraction to a proper fraction. So you have to multiply 25 by 1 and add the answer to 2, and use it as the numerator, with the denominator remaining the same. So;
27/25
   As a decimal, this fraction will be 1.08. Hope i helped. Have a nice day.
3 0
4 years ago
Which is bigger -2.5 or -3/1
Korolek [52]

Answer:

-2.5

Step-by-step explanation:

-2.5 is greater.

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3 years ago
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Calculate 1+2+3...+80 1+3+5+...+99 2+4+6...+100 3+7+11+15+...+43
Neko [114]
This is the answer for the math

4 0
3 years ago
prove that the value of each expression is divisible by the given number 8^10-2^27 is divisible by 14
attashe74 [19]

Answer:

Proof below

Step-by-step explanation:

<h3><u>General Strategy:</u></h3>
  1. Find factors of divisor
  2. Use algebraic properties to reveal those factors in the given expression.

<u></u>

<h3><u>Divisibility</u></h3>

A number, p, is divisible by another number, d, if and only if there is some non-negative integer, n, such that n*d=p.

To prove that, 300 is divisible by 10 because, 30 is a non-negative integer, and 10*30=300.

<u>Strategies for Divisibility by a composite number</u>

Note that in the previous example, 10 is a composite number.  This means that both one 2 and one 5 (the full list of 10s factors) had to be factored out of the 300.

In the given problem, we are to prove that the number is divisible by 14.  Observe 14 is composite with factors of 2 and 7.

<h3><u>Properties of exponents</u></h3>

Since the expression is given with exponents, it will be helpful to recall a few exponent properties to algebraically manipulate the expression.

Recall the following property of exponents:

  • x^{a}*x^{b}=x^{(a+b)}  
  • (x^{a})^{b}=x^{ab}

<h3><u>Finding a factor of 14 in the given expression</u></h3>

Original expression...

8^{10}-2^{27}

Recognizing 8 as a power of 2...

(2^3)^{10}-2^{27}

Simplifying and rewriting so that both terms are powers of 2...

2^{30}-2^{27}

Observing that both terms have 27 twos as factors...

2^{27}*2^{3}-2^{27}

Factoring out 27 twos...

2^{27}*(2^{3}-1)

Simplifying the expression in the parenthesis:

2^{27}*(8-1)

2^{27}*(7)

Knowing that we also need a factor of 2, use properties of exponents, and associative property of multiplication...

(2^{26}*2^1)*7

2^{26}*(2^1*7)

2^{26}*(2*7)

2^{26}*14

Since 2^26 is a non-negative integer, the original expression is divisible by 14.

4 0
2 years ago
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