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3 years ago

What is the answer to this equation -20 +(-9)

Mathematics

2 answers:

Mkey [24]3 years ago

6 0

Answer:

-29 I'm pretty sure.

Step-by-step explanation:

-20 - 9 = 29

ANTONII [103]3 years ago

3 0

Answer:

-29

Step-by-step explanation:

they are both negative so u add them.

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Prove 2^n > n for all n equal to or greater than 1. I mostly need help with how to solve the problem when it is greater than

noname [10]

If $n$ is an integer, you can use induction. First show the inequality holds for $n=1$ . You have $2^1=2>1$ , which is true.

Now assume this holds in general for $n=k$ , i.e. that $2^k>k$ . We want to prove the statement then must hold for $n=k+1$ .

Because $2^k>k$ , you have

$2^{k+1}=2\times2^k>2k$

and this must be greater than $k+1$ for the statement to be true, so we require

$2k>k+1$

for $k>1$ . Well this is obviously true, because solving the inequality gives $3k>1\implies k>\dfrac13$ . So you're done.

If you $n$ is any real number, you can use derivatives to show that $2^n$ increases monotonically and faster than $n$ .

7 0

3 years ago

Need help thanksssssssss

Archy [21]

Answer:

Volume: 112 m³.

Surface area: 172 m².

Step-by-step explanation:

The volume is the base times height times length. So, the volume will be 2 * 8 * 7 = 16 * 7 = 112 m³.

The surface area is 2lw + 2lh + 2wh. l = 8; w = 7; h = 2.

2(8)(7) + 2(8)(2) + 2(7)(2) = 2 * 56 + 2 * 16 + 2 * 14 = 112 + 32 + 28 = 112 + 60 = 172 m².

Hope this helps!

4 0

3 years ago

Please help me solve this 4(x-1)

JulijaS [17]

Simply multiply 4 for the terms in the parenthesis

4x-4

7 0

3 years ago

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a storage jug was 4/5 full of water when did get indicated 72 what was the full capacity of the storage jug

IRISSAK [1]

Answer:

90. ( was the full capacity of jug)

to solve this 

firstly let the full capacity of jug 

 

be. x

so, 

4/5*x = 72

x = 72*5/4

x = 90

hope it helps

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3 years ago

Help a girl out pleaseeee!!

fiasKO [112]

Spinal Cord

hope this helps

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3 years ago

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