2 years ago

A publisher needs to send many books to a local retailer each small box can hold 20 books

Mathematics

1 answer:

Bess [88]2 years ago

3 0

Is there any other number or is it algebra

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How do we graph f(x)=x-7

babymother [125]

The graph of f(x) is a straight line passing through points (0, -7) and (7, 0)

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2 years ago

Explain whether the following given sets are closed under addition:

Ivan

Answer:

Step-by-step explanation:

a) Yes.

$\forall\ a,b\ \in\ B,\ a+b\in B\ (since\ 0+0=0)$

b) Yes

$W=\{0,1,2,3,..,\}\ (whole\ numbers)\\\forall\ a,b\ \in\ 3W,\ a+b\in 3W\\since:\\a\ \in\ 3W \Longrightarrow\ \exists\ k_1\in W | a=3*k_1\\\\b\ \in\ 3W \Longrightarrow\ \exists\ k_2\in W | b=3*k_2\\\\a+b=3*k_1+3*k_2=3*(k_1+k_2) \in 3W\\$

c) Yes

$\forall n\ \in\ \mathbb{N}: \Longrightarrow\ n+1 \in\ \mathbb{N}\\$

d) No

$3\in V , 3+3=6\notin V\\$

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2 years ago

Hi! i don’t really understand this question. if someone could help me i’d appreciate it!

Shkiper50 [21]

Answer:

Step-by-step explanation:

cute it into separate parts then add the areas together

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2 years ago

The sum of two numbers is 53 and the difference is 11. What are the numbers ?

eimsori [14]

The numbers are 32 and 21
32 + 21 = 53
32 - 21 = 11

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2 years ago

<img src="https://tex.z-dn.net/?f=2x%20%7B%7D%5E%7B2%7D%20%20%2B%204x%20-%2021%20%3D%200" id="TexFormula1" title="2x {}^{2} + 4

Ugo [173]

The answer should be 21/8 hope it helps

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2 years ago