3 years ago

What is -7 to the 4 power in expanded form?

Mathematics

1 answer:

kotykmax [81]3 years ago

8 0

Answer:

-7 x -7 x -7 x -7

Step-by-step explanation:

To the fourth power mean times itself four times

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I buy book for $8,i sell it for $ 3.25. How much of loss do i make ?

Anuta_ua [19.1K]

Answer:

Loss = $ 4.75

Step-by-step explanation:

Loss = cost price -selling price

You bought a book will be cost price and when u r selling it it will be selling price

loss = 8-3.25

= 4.75

Loss = $ 4.75

4 0

3 years ago

Read 2 more answers

I am currently working on Trigonometry, but unfortunately I am having a hard time. Here are some of my questions I've answered s

Novosadov [1.4K]

$\bf sin(\theta)=\cfrac{opposite}{hypotenuse}
\qquad \qquad 
% cosine
cos(\theta)=\cfrac{adjacent}{hypotenuse}\\\\
-------------------------------\\\\
cos(\theta)=\cfrac{\sqrt{3}}{3}\cfrac{\leftarrow adjacent=a}{\leftarrow hypotenuse=c}
\\\\\\
\textit{using the pythagorean theorem}\implies c^2=a^2+b^2\implies \pm\sqrt{c^2-a^2}=b
\\\\\\
\pm\sqrt{3^2-(\sqrt{3})^2}=b\implies \pm\sqrt{6}=b$

now the root gives us the +/-, which is it? well, we know the sine is negative, so the "b" value must be negative, so it has to be -√6 = b

thus $\bf sin(\theta)=\cfrac{opposite}{hypotenuse}\implies sin(\theta)=-\cfrac{\sqrt{6}}{3}$