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DaniilM [7]
3 years ago
15

Samuel White purchased an apple for $1.25,

Mathematics
1 answer:
AnnyKZ [126]3 years ago
7 0

Answer:

total $10.97

tax $0.68

Step-by-step explanation:

apple for $1.25

sandwich for $4.25

chips for $2.49

apple juice for $2.30

Total: $10.29

Calculate sales tax:

6.625% of $10.29 = 0.06625 × $10.29 = $0.68

Calculate total price:

$10.29 + $0.68 = $10.97

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Her avarage speed in miles per hour is 54 
How i solved this was by 135/2.5 and i got 54
I hope this helps!
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3 years ago
Is sin theta=5/6, what are the values of cos theta and tan theta?
mina [271]

let's bear in mind that sin(θ) in this case is positive, that happens only in the I and II Quadrants, where the cosine/adjacent are positive and negative respectively.

\bf sin(\theta )=\cfrac{\stackrel{opposite}{5}}{\stackrel{hypotenuse}{6}}\qquad \impliedby \textit{let's find the \underline{adjacent side}} \\\\\\ \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies \pm\sqrt{c^2-b^2}=a \qquad \begin{cases} c=hypotenuse\\ a=adjacent\\ b=opposite\\ \end{cases} \\\\\\ \pm\sqrt{6^2-5^2}=a\implies \pm\sqrt{36-25}\implies \pm \sqrt{11}=a \\\\[-0.35em] ~\dotfill

\bf cos(\theta )=\cfrac{\stackrel{adjacent}{\pm\sqrt{11}}}{\stackrel{hypotenuse}{6}} \\\\\\ tan(\theta )=\cfrac{\stackrel{opposite}{5}}{\stackrel{adjacent}{\pm\sqrt{11}}}\implies \stackrel{\textit{and rationalizing the denominator}~\hfill }{tan(\theta )=\pm\cfrac{5}{\sqrt{11}}\cdot \cfrac{\sqrt{11}}{\sqrt{11}}\implies tan(\theta )=\pm\cfrac{5\sqrt{11}}{11}}

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3 years ago
What is the size of the matrix resulting from
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1×3 or 3×3 I think...........

7 0
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Given the graph of a function, you can preform the horizontal line test to determine whether the inverse is also a function
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I believe the answer is true.

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In quadrilateral QRST, angle RST measures (5x + 15)degrees. Angle TQR measures (4x + 3)degrees.What is the measure of angle RST
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