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3 years ago

Any one want to exchange brainly- 1+1=?

Mathematics

2 answers:

melisa1 [442]3 years ago

7 0

Answer:

Step-by-step explanation:

You have an apple you eat it, you don't have an apple anymore, but you have a good health, because apples are good.

-1+1=0

horsena [70]3 years ago

5 0

Answer:

1+1=2

Thanks

Step-by-step explanation:

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Which table has a constant of proportionality of 8/5

Fudgin [204]

Sorry there’s no info here

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4 years ago

Prove that root 7 is irrational by the method of contradiction

Alchen [17]

Let assume that $\sqrt7$ is a rational number. Therefore it can be expressed as a fraction $\dfrac{a}{b}$ where $a,b\in\mathbb{Z}$ and $\text{gcd}(a,b)=1$ .

$\sqrt7=\dfrac{a}{b}\\\\7=\dfrac{a^2}{b^2}\\\\a^2=7b^2$

This means that $a^2$ is divisible by 7, and therefore also $a$ is divisible by 7.

So, $a=7k$ where $k\in\mathbb{Z}$

$(7k)^2=7b^2\\\\49k^2=7b^2\\\\7k^2=b^2$

Analogically to $a^2=7b^2$ ------- $b^2$ is divisible by 7 and therefore so is $b$ .

But if both numbers $a$ and $b$ are divisible by 7, then $\text{gcd}(a,b)=7$ which contradicts our earlier assumption that $\text{gcd}(a,b)=1$ .

Therefore $\sqrt7$ is an irrational number.

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4 years ago

Pick a simple random sample of 15 restaurants. Describe your method and list the numbers of the restaurants you have chosen.

KengaRu [80]

Answer:

r3yes

Step-by-step explanation:

yes

5 0

4 years ago

Isaiah is planning to send a video game to each of his

BlackZzzverrR [31]

Answer:

x = 45.25 and 2x + 9.50 < 100

Step-by-step explanation:

Okay, so I dont know if you want am explanation but here I go

if for each game shipping is 4.75, you multiply by 2 to find the total there, hence 9.5.

and you dont want to go over $100, so the amount you spent has to be less then $100

and you're going to buy 2 games, x stands for the price.

2x + 9.50 < 100

2x < 90.5 (i just subtracted 9.5 on each side)

2/2x = 90.5/2

x = 45.25

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3 years ago

The weather report stated that tomorrow's low temperature will be -3 degrees. What does that statement mean?

Ket [755]

Answer:

It means that the lowest the temperature will get that day is -3 degrees

Step-by-step explanation:

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3 years ago