2 years ago

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar

Mathematics

1 answer:

andreev551 [17]2 years ago

3 0

Step-by-step explanation:

what is the question??

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3 years ago

The perimeter of Square three is 20.4 square units in the perimeter of square two is 27.2 square units what is the area of squar

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Answer:

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Step-by-step explanation:

20.4*27.2=

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2 years ago

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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3 years ago

I THINK ITS B BUT IM NOT SURE CAN SOMEONE HELP

OLga [1]

Answer:

you are correct the answer is b

Step-by-step explanation:

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2 years ago

A lasagna recipe that serves 6 people calls for 1 pound of pasta 1.5pounds of meat 2 cups of cheese and 2 cups of sauce

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Please specify what your asking, and I'd be glad to help!

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3 years ago