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3 years ago

−0.96p+p+0.86? i dont know this at all

Mathematics

1 answer:

Contact [7]3 years ago

6 0

Answer: 1.96p+0.86

Step-by-step explanation:

add 0.96 and p

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there a 4 muffins on each plate. there are 0 plates of lemon muffins. how many lemon muffins are there?

Alla [95]

You could subtract 4 and if there is not any lemon muffins you would have to do something else

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3 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.

8 0

4 years ago

Which explains how to determine 40% of 50?

valkas [14]

Multiply 50 by .4 or .40. Both give the same answer, which is 20.

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3 years ago

Evaluate the six trigonometric ratios for ø.

vova2212 [387]

Answer:

See below

Step-by-step explanation:

First off, the missing side is c=√(17²-8²)=15

sinø=opposite/hypotenuse=15/17

cosø=adjacent/hypotenuse=8/17

tanø=opposite/adjacent=15/8

cscø=hypotenuse/opposite=1/sinø=1/(15/17)=17/15

secø=hypotenuse/adjacent=1/cosø=1/(8/17)=17/8

cotø=adjacent/opposite=1/tanø=1/tanø=1/(15/8)=8/15

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3 years ago

A dog buries 4 new bones in her backyard. If b represents the number of bones the dog previously had buried, write an expression

Lemur [1.5K]

Answer:

$b+4$

Step-by-step explanation:

Before, we had b bones. Now, we have four more, so $b+4$ .

6 0

3 years ago