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3 years ago

Need help please please someone help me

Mathematics

2 answers:

Elanso [62]3 years ago

6 0

///The answer is -188///

Helen [10]3 years ago

3 0

Answer: 11.4

Step-by-step explanation:

Okay so we are going to use PEMDAS,

So first we multiply 2 times 5 first and get 10

(9-84 divided by 10 + 5+6)+2

(9-8.4+5+6)+2

( 9- 8.4 + 11) +2

( -1.6 + 11) +2

9.4 + 2

11.4

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Can somebody prove this mathmatical induction?

Flauer [41]

Answer:

See explanation

Step-by-step explanation:

1 step:

n=1, then

$\sum \limits_{j=1}^1 2^j=2^1=2\\ \\2(2^1-1)=2(2-1)=2\cdot 1=2$

So, for j=1 this statement is true

2 step:

Assume that for n=k the following statement is true

$\sum \limits_{j=1}^k2^j=2(2^k-1)$

3 step:

Check for n=k+1 whether the statement

$\sum \limits_{j=1}^{k+1}2^j=2(2^{k+1}-1)$

is true.

Start with the left side:

$\sum \limits _{j=1}^{k+1}2^j=\sum \limits _{j=1}^k2^j+2^{k+1}\ \ (\ast)$

According to the 2nd step,

$\sum \limits_{j=1}^k2^j=2(2^k-1)$

Substitute it into the $\ast$

$\sum \limits _{j=1}^{k+1}2^j=\sum \limits _{j=1}^k2^j+2^{k+1}=2(2^k-1)+2^{k+1}=2^{k+1}-2+2^{k+1}=2\cdot 2^{k+1}-2=2^{k+2}-2=2(2^{k+1}-1)$

So, you have proved the initial statement

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4 years ago

A golden eagle flies a distance of 290 miles in 5 days.If the eagle flies the same didstance each day of its journey how far doe

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3 years ago

What is c3 - 1 when c = 4

den301095 [7]

The answer to your question is 11.
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3 years ago

Read 2 more answers

You estimate that 38 people attended your party. The actual attendence was 50 people.

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Answer:

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Step-by-step explanation:

Vobserved - Vtrue

-------------------------------

Vtrue

38 - 50

---------------

-12

-------------

= -24%

= 24% error

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3 years ago

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Answer:

1/6 for each side.

Step-by-step explanation:

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2 years ago